{"id":20721,"date":"2024-01-09T01:28:05","date_gmt":"2024-01-09T05:28:05","guid":{"rendered":"https:\/\/maxtorqueperformance.com\/staging\/?p=20721"},"modified":"2024-01-09T02:10:30","modified_gmt":"2024-01-09T06:10:30","slug":"bearing-clearance-and-oil-viscosity-explained","status":"publish","type":"post","link":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/2024\/01\/09\/bearing-clearance-and-oil-viscosity-explained\/","title":{"rendered":"Bearing Clearance and Oil Viscosity Explained"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<header  class=\"entry-header post-title title-align-left title-tablet-align-inherit title-mobile-align-inherit\"  style=\"box-sizing: inherit; text-align: left; margin-bottom: 1em; color: rgb(0, 0, 0); font-family: Roboto, sans-serif; font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\">\n<h1 class=\"entry-title\"  style=\"box-sizing: inherit; font-size: 32px; margin: 0px; padding: 0px; font-family: var(--global-heading-font-family); font-style: normal; font-weight: 700; line-height: 1.5; color: var(--global-palette3); overflow-wrap: break-word;\"><font            size=\"5\"><a              href=\"https:\/\/www.k1technologies.com\/category\/k1-blog\/\"              rel=\"category tag\"  style=\"box-sizing: inherit; background-color: rgb(255, 255, 255); color: var(--global-palette1); transition: all 0.1s linear 0s; outline: 0px; text-decoration: none; font-family: Roboto, sans-serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal;\">K1              &#8211; Blog<\/a><\/font><\/h1>\n<div class=\"entry-meta entry-meta-divider-vline\"  style=\"box-sizing: inherit; font-size: 13.6px; margin: 1em 0px; display: flex; flex-wrap: wrap; color: var(--global-palette3); justify-content: flex-start;\"><span            class=\"posted-on\"  style=\"box-sizing: inherit; display: inline-flex; align-items: center; flex-wrap: wrap;\"><time              class=\"entry-date published\"              datetime=\"2019-06-21T20:44:00-04:00\"              style=\"box-sizing: inherit; white-space: nowrap;\"><br \/>            <\/time><\/span><\/div>\n<\/header>\n<div class=\"entry-content single-content\"  style=\"box-sizing: inherit; counter-reset: footnotes 0; word-break: break-word; margin: var(--global-md-spacing) 0 0; color: rgb(0, 0, 0); font-family: Roboto, sans-serif; font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\">\n<figure class=\"wp-block-image\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit;\"><img loading=\"lazy\" decoding=\"async\"  src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/1_05.jpg\"            alt=\"Bearing Clearance and Oil Viscosity Explained\"            title=\"Bearing Clearance and Oil Viscosity Explained 1\"  data-lazy-src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/1_05.jpg\"            data-ll-status=\"loaded\" class=\"entered lazyloaded\"  style=\"box-sizing: border-box; border-style: none; display: block; height: auto; max-width: 100%; vertical-align: bottom;\"            width=\"5184\" height=\"3456\"><\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">The          relationship between bearing clearance and oil viscosity is a          delicate balance. Read on for more information on how to get it          right!There are some fairly famous duos in the entertainment          industry \u2013 Abbott and Costello, Rogers and Hammerstein, and          Batman and Robin among the more illustrious. So it may not be          much of a stretch of the imagination for an engine guy to          include the pairing of bearing clearances with oil viscosity as          a duo you should become acquainted.<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">The          typical rule that most engine builders follow is that bearing          clearance establishes the viscosity of the oil to use within a          given oil temperature range. Generally, the tighter the bearing          clearance, the lower the viscosity the engine can use while          wider clearances require thicker oil. But there are plenty of          variables that come into play that are worth investigating.<\/p>\n<figure class=\"wp-block-image\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit;\"><img loading=\"lazy\" decoding=\"async\"  src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil_viscosity-01.jpg\"            alt=\"oil viscosity 01\"            title=\"Bearing Clearance and Oil Viscosity Explained 2\"  data-lazy-src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil_viscosity-01.jpg\"            data-ll-status=\"loaded\" class=\"entered lazyloaded\"  style=\"box-sizing: border-box; border-style: none; display: block; height: auto; max-width: 100%; vertical-align: bottom;\"            width=\"5184\" height=\"3456\"><\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">Viscosity is a            rating system for oil that rates the oil\u2019s thickness at a            given temperature. Production engines are increasingly moving            to thinner, less viscous oil in search of improve fuel economy            but there are performance advantages to thinner oil if the            bearing clearances are somewhat tighter.<\/strong><\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">The          traditional bearing clearance standard for street and most          performance applications has been 0.001-inch of clearance for          every one inch of crank journal diameter. So a typical          small-block Chevy 2.200-inch rod journal would call for a          bearing clearance of 0.0022-inch. Some add another 0.0005-inch          to be safe \u2013 making that 0.0027-inch.This standard works very          well especially for engines using production tolerance parts          where there could be minor issues with out-of-round or tapered          journals or even minor errors in measurement.<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">This          approach isn\u2019t quite as colloquial as it may seem. There are          several contributing factors that directly affect a given          bearing clearance. The top three variables are load carrying          capacity, the amount of oil flow allowed by the clearance, and          localized oil temperature. These three are best considered          together as opposed to individually since each affects the          others in important ways.<\/p>\n<figure class=\"wp-block-image\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit;\"><img loading=\"lazy\" decoding=\"async\"  src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil_viscosity-02.jpg\"            alt=\"oil viscosity 02\"            title=\"Bearing Clearance and Oil Viscosity Explained 3\"  data-lazy-src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil_viscosity-02.jpg\"            data-ll-status=\"loaded\" class=\"entered lazyloaded\"  style=\"box-sizing: border-box; border-style: none; display: block; height: auto; max-width: 100%; vertical-align: bottom;\"            width=\"5184\" height=\"3456\"><\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">The only right            way to begin accurately measuring bearing clearances is with a            micrometer that can accurately measure to 0.0001-inch. That\u2019s            a tenth of a thousandth.<\/strong><\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">A          bearing\u2019s load carrying capacity is directly affected by          clearance. As the clearance is tightened, load carrying capacity          increases. As a generalized statement, 0.001-inch clearance          offers a higher load carrying capacity than 0.002-inch using the          standard 2.45-inch small-block main journal size as the example.<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">Load          capacity increases with less clearance because it spreads the          load over a wider bearing surface area, which increases the          capacity. Think of this like wearing a pair of snow shoes that          allow you to walk on deep snow without sinking in. Remove the          shoes and your feet sink because your weight is concentrated on          a smaller surface area. So as bearing clearance increases, the          load carrying capacity is reduced because the load is          concentrated in a smaller area. \u00a0<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">Bearing Oil            Clearance Chart<\/strong><\/p>\n<figure class=\"wp-block-table\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit; overflow-x: auto; border-collapse: collapse;\">\n<table  style=\"box-sizing: inherit; margin: 0px; width: 892.812px; border-collapse: collapse; word-break: normal;\">\n<tbody style=\"box-sizing: inherit;\">\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\"><strong                    style=\"box-sizing: inherit; font-weight: bold;\">Oil                    Viscosity<\/strong><\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\"><strong                    style=\"box-sizing: inherit; font-weight: bold;\">Rod                    Bearing<\/strong><strong                    style=\"box-sizing: inherit; font-weight: bold;\">Clearance<\/strong><\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\"><strong                    style=\"box-sizing: inherit; font-weight: bold;\">Main                    Bearing<\/strong><strong                    style=\"box-sizing: inherit; font-weight: bold;\">Clearance<\/strong><\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">20w                  \/ 5w20<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">&lt;                  0.0021<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">&lt;0.0020<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">30w                  \/ 5w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0021                  \u2013 0.0026<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0020                  \u2013 0.0025<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">40w                  \/ 10w40<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0026                  \u2013 0.0031<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0025                  \u2013 0.0030<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">50w                  \/ 20w50<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0031                  &gt;<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0030                  &gt;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">Common          sense dictates that bearing clearance directly affects oil flow          with predicable results. Reducing the clearance will increase          the restriction to flow and reduce the volume of oil past the          bearing. Because of this reduced flow, the localized bearing          temperature will increase. If this temperature exceeds the oil\u2019s          thermal stability limit, the oil will begin to oxidize and break          down, reducing its ability to lubricate. We will get into oil          viscosity shortly as this plays an integrated part in this          scenario.<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">So          bearing clearance becomes a balancing act between these three          factors to establish a clearance that satisfies all as          efficiently as possible. This is how that 0.001-inch of          clearance per one inch of journal diameter was created as the          best compromise.<\/p>\n<figure class=\"wp-block-image\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit;\"><img loading=\"lazy\" decoding=\"async\"  src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil-viscosity-3.jpg\"            alt=\"oil viscosity 3\"            title=\"Bearing Clearance and Oil Viscosity Explained 4\"  data-lazy-src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil-viscosity-3.jpg\"            data-ll-status=\"loaded\" class=\"entered lazyloaded\"  style=\"box-sizing: border-box; border-style: none; display: block; height: auto; max-width: 100%; vertical-align: bottom;\"            width=\"5184\" height=\"3456\"><\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">Once the            journal diameter is established, use the same micrometer to            set a dial bore gauge to the journal size. The clearance read            by the dial bore gauge will be the bearing clearance. In this            example, we\u2019re looking at 0.0027-inch of main bearing            clearance. Clearances must always be checked in the true            vertical.<\/strong><\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">Perhaps          this would be a good place to take a slightly closer look at          exactly how those running clearances play out. Using simple          round numbers, let\u2019s start with a 2.00-inch rod journal with          0.0020-inch of clearance. This assumes we will have 0.001-inch          on the top and bottom of the journal, which is true but only in          a theoretical sense.<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">In          a running engine, cylinder pressure pushes downward on the          piston, reducing that 0.001-inch figure. \u00a0A loaded connecting          rod at peak cylinder pressure will reduce that oil film          clearance to as small as 0.0002-inch. With a static bearing          clearance of 0.002-inch that means the upper half of the rod          bearing has 0.0198-inch worth of clearance. This is important          because this larger clearance creates a space easily filled with          fresh oil for the following rotation.<\/p>\n<figure class=\"wp-block-image\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit;\"><img loading=\"lazy\" decoding=\"async\"  src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil-viscosity-4.jpg\"            alt=\"oil viscosity 4\"            title=\"Bearing Clearance and Oil Viscosity Explained 5\"  data-lazy-src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil-viscosity-4.jpg\"            data-ll-status=\"loaded\" class=\"entered lazyloaded\"  style=\"box-sizing: border-box; border-style: none; display: block; height: auto; max-width: 100%; vertical-align: bottom;\"            width=\"4790\" height=\"3419\"><\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">This Driven            Racing illustration offers a microscopic view of what happens            when operating clearances become tight. The peaks of the            crankshaft journal can overlap the peaks of the bearing            material causing wear. This is called a mixed film condition            and can be caused by either tight clearances or an oil            viscosity that is to thin perhaps caused by high oil            temperature.\u00a0<\/strong><\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">This          leads directly to the value of film thickness, which is created          by a combination of the oil viscosity, bearing speed, and load.          Oil viscosity predictably changes with temperature while the          bearing speed is determined by the combination of the journal          diameter and engine rpm and load is of course application          dependent. All of these factors play into establishing the          thickness of the film of oil. We spoke to Lake Speed, Jr., with          Driven Racing Oil who used these three factors (and more) to          perform a test of film thickness and stability with different          oils and bearings at Shaver Racing Engines in Torrance,          California.<\/p>\n<figure class=\"wp-block-image\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit;\"><img loading=\"lazy\" decoding=\"async\"  src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil-viscosity-5.jpg\"            alt=\"oil viscosity 5\"            title=\"Bearing Clearance and Oil Viscosity Explained 6\"  data-lazy-src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/oil-viscosity-5.jpg\"            data-ll-status=\"loaded\" class=\"entered lazyloaded\"  style=\"box-sizing: border-box; border-style: none; display: block; height: auto; max-width: 100%; vertical-align: bottom;\"            width=\"5184\" height=\"3456\"><\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">This 500 hp            iron block LS generated 80-plus psi of oil pressure, so we            drained the 10w30 and replaced it with 5w20 viscosity oil.            From 4,000 to 6,500 the engine gained an average of 3.1 hp.            The engine still produced over 70 psi peak oil pressure with            the 5w20 oil so there are further gains to be realized.<\/strong><\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">His          test was aimed mainly at evaluating coated bearings but it also          looked at the ability of the oil to maintain its given film          thickness under extreme temperature. It is commonly acknowledged          that synthetics do a much better job of lubrication and          protecting engine components compared to conventional oils at          elevated oil temperatures. Speed\u2019s test compared a synthetic          Driven oil to a conventional Driven oil of the same viscosity          and additive packages. The visual evaluation of the bearings          along with a used oil analysis (UOA) revealed radically reduced          physical contact between the crankshaft and the main and rod          bearings with the synthetic oil. This offers specific evidence          that a higher-quality synthetic offers real advantages          especially with engines making big power where heat is a factor.<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">Ironically,          Speed\u2019s test employed a mild, 400 hp 383ci small-block Chevy at          slow speeds, which can be abusive on bearings because of the          extreme load. This is why lugging an engine at low speed isn\u2019t a          good idea as the loads increase dramatically. The quality of the          oil played a big part in maintaining the proper lubrication          barrier between the bearings and the crank journal. According to          Speed, \u201cToday\u2019s oils have much greater load-carrying capacity          that older oils.\u201d This higher capacity spreads the load over a          larger area which improves the overall capacity and avoids          stress fractures that can occur in bearings due to excess load.\u00a0<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">All          of these factors play into the final decisions around bearing          clearance and viscosity. \u00a0If all we do is change to an aluminum          connecting rod for example, this should require an increase in          bearing clearance if for no other reason than because aluminum          offers a linear rate of expansion that is roughly twice that of          steel or cast iron. This will also have a direct affect on the          running clearances. This however, should be carefully          considered. As an example, you might think that an all-aluminum          engine would demand a much different main bearing clearance          compared to an all-iron version.<\/p>\n<figure class=\"wp-block-image\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit;\"><img loading=\"lazy\" decoding=\"async\"  src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/07.jpg\"            alt=\"07\"            title=\"Bearing Clearance and Oil Viscosity Explained 7\"  data-lazy-src=\"https:\/\/www.k1technologies.com\/wp-content\/uploads\/2023\/08\/07.jpg\"            data-ll-status=\"loaded\" class=\"entered lazyloaded\"  style=\"box-sizing: border-box; border-style: none; display: block; height: auto; max-width: 100%; vertical-align: bottom;\"            width=\"3024\" height=\"4032\"><\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">Driven Racing            Oil\u2019s Lake Speed, Jr. performed a series of tests of synthetic            oil (left) versus conventional oil (right) on engine bearings            in a small-block Chevy. Not surprisingly, the synthetic\u2019s more            stable oil film dramatically improved bearing wear even over a            three-hour, high-load-low-rpm test. Both oils used the same            viscosity and additive package so the only difference was the            base oil.<\/strong><\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">Looking          at this a little closer, most performance small-block Chevy          aluminum blocks feature steel main caps. So now we have an          aluminum block with steel main caps and the decision is whether          this warrants a change in main bearing clearance. If we consider          that all of the load will be applied to the steel main cap side          of the engine, decreasing the main bearing clearance to account          for the added growth of the aluminum block may not necessarily          be a good decision. Tighter clearances also demand very careful          cold weather starting and warm-up procedures because aluminum          also will contract at twice the rate of iron or steel. Most          engine builders we spoke to said they don\u2019t make major clearance          changes when building an aluminum block engine.<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\">While          bearings need a solid oil film to protect against wear, there          are multiple factors that come into play in order to create the          ideal combination of load carrying capacity and oil flow while          minimizing oil temperature. This demands a careful balance of          clearances, oil viscosity, and temperature control to avoid          problems. The good news is as oil quality continues to improve,          this thermal stability will continue to push toward lighter oil          and tighter clearances with potential improvements in both          durability and power.<\/p>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">Driven Bearing            Clearance vs Oil Viscosity<\/strong><\/p>\n<figure class=\"wp-block-table\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit; overflow-x: auto; border-collapse: collapse;\">\n<table  style=\"box-sizing: inherit; margin: 0px; width: 892.812px; border-collapse: collapse; word-break: normal;\">\n<tbody style=\"box-sizing: inherit;\">\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\"><strong                    style=\"box-sizing: inherit; font-weight: bold;\">Main                    Bearing Clearance<\/strong><\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Oil                  Temp Lessthan 160 F<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Oil                  Temp160-220F<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Oil                  TempOver 220 F<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Iron                  Block<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0034-0.0039<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">15w50-20w50<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">20w60                  \u2013 60w<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0028-0.0033<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a05w30                  or 10w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">15w50-20w50<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0022-0.0027<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a00w20                  or 5w20<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a05w30                  or 10w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0016-0.0021<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00w10<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a00w20                  or 5w20<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a05w30                  or 10w30<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0010-0.0015<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00w5<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00w10<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a00w20                  or 5w20<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Aluminum                  Block<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0029-0.0034<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 5w40<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">15w50                  or 20w50<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">20w60                  or 60w<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0023-0.0028<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a05w30                  or 10w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">15w50                  or 20w50<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0018-0.0022<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a00w20                  or 5w20<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">5w30                  or 10w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0012-0.0017<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00w10<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w20                  or 5w20<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">5w30                  or 10w30<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0006-0.0011<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00w5<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w10<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w20                  or 5w20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: var(--global-md-spacing);\"><strong            style=\"box-sizing: inherit; font-weight: bold;\">Connecting Rod            Clearance<\/strong><\/p>\n<figure class=\"wp-block-table\"  style=\"margin-top: 0px; margin-right: 0px; margin-bottom: var(--global-md-spacing); margin-left: 0px; box-sizing: inherit; overflow-x: auto; border-collapse: collapse;\">\n<table  style=\"box-sizing: inherit; margin: 0px; width: 892.812px; border-collapse: collapse; word-break: normal;\">\n<tbody style=\"box-sizing: inherit;\">\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\"><strong                    style=\"box-sizing: inherit; font-weight: bold;\">Clearance<\/strong><\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Oil                  Temp Lessthan 160 F<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Oil                  Temp160-220F<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Oil                  TempOver 220 F<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\"><strong                    style=\"box-sizing: inherit; font-weight: bold;\">Steel                    Rod<\/strong><\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0028-0.0033<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">5w30                  or 10w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">15w50                  or 20w50<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0022-0.0027<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w20                  or 5w20<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">5w30                  or 10w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0016-0.0021<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w10<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w20                  or 5w20<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">5w30                  or 10w30<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0010-0.0015<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Ow5<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w10<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w20                  or 5w20<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">Aluminum                  Rod<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">\u00a0<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0023-0.0028<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">5w30                  or 10w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">15w50                  or 20w50<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">20w60                  or 60w<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0018-0.0022<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w20                  or 5w20<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">15w50                  or 20w50<\/td>\n<\/tr>\n<tr style=\"box-sizing: inherit;\">\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0.0012-0.0017<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">0w10<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">5w30                  or 10w30<\/td>\n<td  style=\"box-sizing: inherit; border: 1px solid var(--global-palette6); padding: 0.5em; word-break: normal;\">10w40                  or 15w40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p  style=\"box-sizing: inherit; margin-top: 0px; margin-bottom: 0px;\">This          Driven Racing Oil chart (above) \u00a0illustrates some basic starting          points for different engine applications. It\u2019s important to          choose the correct viscosity grade for the maximum engine oil          temperature. As oil temperatures increases, the viscosity will          drop. When there is a conflict between rod and main clearances,          it\u2019s always best to use the heavier of the two viscosity          recommendations. \u00a0Keep in mind that these should be considered          as recommended starting points for bearing clearances and oil          viscosity. Individual applications can certainly vary.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>K1 &#8211; Blog The relationship between bearing clearance and oil viscosity is a delicate balance. Read on for more information [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[41],"tags":[],"class_list":["post-20721","post","type-post","status-publish","format-standard","hentry","category-techpost"],"_links":{"self":[{"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/posts\/20721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/comments?post=20721"}],"version-history":[{"count":0,"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/posts\/20721\/revisions"}],"wp:attachment":[{"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/media?parent=20721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/categories?post=20721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/tags?post=20721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}