{"id":2329,"date":"2019-02-16T00:18:16","date_gmt":"2019-02-16T04:18:16","guid":{"rendered":"http:\/\/maxtorqueperformance.com\/?p=2329"},"modified":"2019-02-16T00:19:06","modified_gmt":"2019-02-16T04:19:06","slug":"fwd-the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates","status":"publish","type":"post","link":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/2019\/02\/16\/fwd-the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates\/","title":{"rendered":"Fwd: The Secret Life of Bearings: A Test Of Bearing And Oil Wear Rates"},"content":{"rendered":"<div>\n<div class=\"moz-forward-container\">        <\/p>\n<header class=\"entry-header clearfix\">          <\/p>\n<div class=\"entry-meta\">\n<div class=\"avatar\"><a class=\"author crop crop-image_290_290\"                href=\"https:\/\/www.streetmusclemag.com\/author\/jeffsmith\/\"                moz-do-not-send=\"true\"><img decoding=\"async\" style=\"height: 50px;\" alt=\"\"  src=\"https:\/\/www.streetmusclemag.com\/wp-content\/userphoto\/jeffsmith.thumbnail.jpg\"                  moz-do-not-send=\"true\" width=\"80\"> <\/a><\/div>\n<p>            <span class=\"byline\"> By <span class=\"author vcard\"><a                  class=\"url fn n\"                  href=\"https:\/\/www.streetmusclemag.com\/author\/jeffsmith\/\"                  moz-do-not-send=\"true\">Jeff Smith<\/a> <\/span><\/span><span              class=\"posted-on\">February 14, 2019<\/span> <\/div>\n<\/header>\n<div class=\"entry-content\">\n<p>It can be a very tortuous existence for engine bearings.            Think about it. Bearings are there to be abused and many            engine builders treat them as a consumable. Most of the            attention bearings receive is heaped upon design, clearances,            and oil feed theory. But once the engine is broken-in and            running, attention shifts to other concerns.<\/p>\n<p>This story looks at how bearings, coatings, and the oil you            choose can have a dramatic effect on bearing life. As you            might expect, this means spending a little more money up            front, but the results may make that an easy decision.<\/p>\n<p>The engineers at <a href=\"http:\/\/www.kingbearings.com\"              target=\"_blank\" moz-do-not-send=\"true\">King Bearings<\/a>            have recently developed a new performance rod and main bearing            called the pMaxBlack. This is a bearing with major changes to            the tri-metal alloy, in a quest to create a material that is            still soft enough to handle a high-output engine, while            simultaneously offering increased fatigue resistance and load            carrying capacity. The inside story on how King developed this            bearing is steeped in alloy-metal technology, so let\u2019s just            say they figured out a way to make a bearing stronger to            withstand the abuse from increased power levels while still            making it soft enough to properly do its job.<\/p>\n<p><strong>Bearing Theory<\/strong><\/p>\n<p>Race or performance oriented tri-metal bearings are built            intentionally soft because, if a rod journal deflects or a            crankshaft bends under high load, the journal may contact the            bearing. If the bearing is soft enough, it merely wears            slightly. Unfortunately, cold startups tend to take their toll            on engine bearings, since the crank rotates for several            revolutions before the film of oil builds up between the            bearing and the journal. This is why you often see race teams            pressure lube the engine each time before cold startup.<\/p>\n<div class=\"wp-caption alignnone\" id=\"attachment_1059287\"            style=\"width: 970px\"><a  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-08-37_587169.jpg\"              rel=\"shadowbox[sbpost-2207214];player=img;\"              moz-do-not-send=\"true\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2207310                size-large\" style=\"display: inline;\" alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-08-37_587169-960x640.jpg\"                data-lazy-loaded=\"true\" moz-do-not-send=\"true\" width=\"960\"                height=\"640\"><noscript>&lt;img class=&#8221;wp-image-2207310 size-large&#8221; src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-08-37_587169-960&#215;640.jpg&#8221; alt=&#8221;&#8221; width=&#8221;960&#8243; height=&#8221;640&#8243; \/&gt;<\/noscript><\/a>            <\/p>\n<p class=\"wp-caption-text\">The King pMaxBlack performance              bearing isn\u2019t a coating but rather a new bearing top overlay              that increases hardness by 24-percent yet with 17-percent              greater fatigue resistance. Adding the pMax Kote coating              makes these bearings even more wear-resistant.<\/p>\n<\/p><\/div>\n<p>King \u2018s aluminum-alloy bearing material (HP prefix) is used            in very high-load applications. According to Ron Sledge of            King Bearings, \u201cThe duration of time of the loading is what            separates which bearing to use, HP vs. XP or XPC. The HP will            handle very high loading for a shorter period of time (like            drag racing) whereas the XP or XPC will handle very high            loading for longer time periods, like circle-track and            off-road racing.\u201d<\/p>\n<div class=\"ad responsive-ads clearfix apply-responsive-ads            clearfix with_sidebar select-cluster_2 processed\"            style=\"width: 990px; padding-right: 0px; padding-left: 0px;            margin-left: -30px; max-width: none;\"            data-displayed=\"cluster_2\" data-group-reponsive=\"desktop\"            data-banner-count=\"\" data-select-cluster=\"cluster_2\">\n<p><input class=\"ad-sizes\"                value=\"cluster_1;cluster_2;cluster_3\" type=\"hidden\"><input                class=\"ad-avoid-duplicate\" value=\"1\" type=\"hidden\"><\/p>\n<\/p><\/div>\n<p>\u201cThe advantage of the HP bearing is that it will tolerate            handling debris and crankshaft deflection better than the XP            or XPC because of the 0.012-inch thickness of the aluminum            layer.\u201d The babbit overlay on the XP bearing is only            0.0005-inch thick. This thinner layer does not tolerate debris            and crankshaft deflection as well.<\/p>\n<div class=\"photo-with-content\">\n<div class=\"photo-content\">\n<h4 class=\"photo-content-title\">Bearing Hardness<\/h4>\n<table style=\"height: 117px\" width=\"978\">\n<tbody>\n<tr style=\"height: 26px\">\n<td style=\"width: 471px;height: 26px\"><strong>BEARING                        MATERIAL<\/strong><\/td>\n<td style=\"width: 499px;height: 26px\"><strong>HARDNESS                        RATING<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 26px\">\n<td style=\"width: 471px;height: 26px\">Aluminum<\/td>\n<td style=\"width: 499px;height: 26px\">40 Hv<\/td>\n<\/tr>\n<tr style=\"height: 26px\">\n<td style=\"width: 471px;height: 26px\">Tri-metal<\/td>\n<td style=\"width: 499px;height: 26px\">11-14 Hv<\/td>\n<\/tr>\n<tr style=\"height: 27px\">\n<td style=\"width: 471px;height: 27px\">pMaxBlack<\/td>\n<td style=\"width: 499px;height: 27px\">18 Hv<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p><strong>Keeping Up With Technology<\/strong><\/p>\n<p>Today\u2019s 21st-century street engines are now making more            horsepower than pure competition engines from as little as two            decades ago. Builders naturally expect the bearings to keep up            with these enhanced power plateaus. This is why King Bearings            developed the pMax Black bearings.<\/p>\n<p>Taking this idea a step further, King developed a coating for            this bearing called pMaxKote. This becomes the            ultimate-performance King bearing, employing what the company            calls a nano-composite polymer coating. According to Sledge,            the term nano-composite just means it is made up of nanosized            materials in a polymer base. The coating is added on top of            the pMaxBlack overlay and does not increase the thickness of            the overall bearing wall.<\/p>\n<p>To maintain the same dimensions, King compensates with the            thickness of the intermediate copper layer to allow for the            0.0002-inch thickness of the pMaxBlack coating. This allows            for maintaining the same oil clearances as uncoated            counterparts. The coating protects the bearing from mild abuse            and is designed to be extremely wear resistant\u00a0\u2013 even when            slight contact is made with the crankshaft.<\/p>\n<div class=\"wp-caption alignnone\" id=\"attachment_1059288\"            style=\"width: 970px\"><a  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-14-48_086812.jpg\"              rel=\"shadowbox[sbpost-2207214];player=img;\"              moz-do-not-send=\"true\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2207311                size-large\" style=\"display: inline;\" alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-14-48_086812-960x640.jpg\"                data-lazy-loaded=\"true\" moz-do-not-send=\"true\" width=\"960\"                height=\"640\"><noscript>&lt;img class=&#8221;wp-image-2207311 size-large&#8221; src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-14-48_086812-960&#215;640.jpg&#8221; alt=&#8221;&#8221; width=&#8221;960&#8243; height=&#8221;640&#8243; \/&gt;<\/noscript><\/a>            <\/p>\n<p class=\"wp-caption-text\">This is what happens when a              connecting rod bearing runs for a short time at max load              with insufficient lubrication. Connecting rod bearings often              fail first because they are heavily loaded and are last in              line for lubrication.<\/p>\n<\/p><\/div>\n<p><strong>Put To The Test<\/strong><\/p>\n<p>All of this sounds really good, but the question becomes, how            would this coating work in the real world of internal            combustion engines? King thought that an independent test            would be a good idea, so they collaborated with Lake Speed,            Jr. at <a href=\"http:\/\/www.drivenracingoil.com\/\"              target=\"_blank\" moz-do-not-send=\"true\">Driven Racing Oils,<\/a>            and the team at Shaver Specialties, where they set up an            abusive test schedule. The plan took shape by placing a            relatively mild 440 hp, 383ci small-block Chevy on the dyno.            They used a purposely excessive cylinder test regime that            would heap serious load on the connecting rod and main            bearings and then evaluate the results.<\/p>\n<div class=\"ad responsive-ads clearfix apply-responsive-ads            clearfix with_sidebar select-cluster_3 processed\"            style=\"width: 990px; padding-right: 0px; padding-left: 0px;            margin-left: -30px; max-width: none;\"            data-displayed=\"cluster_2;cluster_3\"            data-group-reponsive=\"desktop\" data-banner-count=\"\"            data-select-cluster=\"cluster_3\">\n<p><input class=\"ad-sizes\"                value=\"cluster_1;cluster_2;cluster_3\" type=\"hidden\"><input                class=\"ad-avoid-duplicate\" value=\"1\" type=\"hidden\"><\/p>\n<\/p><\/div>\n<p>This required a baseline or control combination, with a            couple sets of King XP, Tri-metal bearings, and Driven            supplied a mineral-based, 5W-20 as the baseline lubricant. To            make this a true lubricant comparison, the engine oil additive            packages had to be exactly the same. Because there were no            off-the-shelf mineral-based and synthetics with the same exact            additive package, Speed supplied both custom-blended oils for            the test.<\/p>\n<div class=\"wp-caption alignnone\" id=\"attachment_1059291\"            style=\"width: 970px\"><a  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-29-16_245606.jpg\"              rel=\"shadowbox[sbpost-2207214];player=img;\"              moz-do-not-send=\"true\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2207312                size-large\" style=\"display: inline;\" alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-29-16_245606-960x640.jpg\"                data-lazy-loaded=\"true\" moz-do-not-send=\"true\" width=\"960\"                height=\"640\"><noscript>&lt;img class=&#8221;wp-image-2207312 size-large&#8221; src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-29-16_245606-960&#215;640.jpg&#8221; alt=&#8221;&#8221; width=&#8221;960&#8243; height=&#8221;640&#8243; \/&gt;<\/noscript><\/a>            <\/p>\n<p class=\"wp-caption-text\">This is an example SPEEDiagnostix              report sheet from this test. It shows the type of results              you can expect as part of the evaluation. Any warning signs              are immediately highlighted in yellow or red. If everything              is good, the check marks are in green.<\/p>\n<\/p><\/div>\n<p>Neither is available as an off-the-shelf oil with this            specific blend of additives, but they both are representative            of high-zinc and high-phosphorus lubricants. Speed chose a            lower viscosity base-oil which would intentionally decrease            the oil film thickness and increase potential bearing contact            and wear.<\/p>\n<p>As you can see from the results chart, the differences are            measured in as little as single-digit parts-per-million (ppm)            numbers. In order to ensure these numbers are accurate, Speed            also performed a flush procedure between each of the four            tests. This involves draining the test oil, removing the Wix            oil filter, and refilling with Driven\u2019s break-in oil BR30            along with a new filter, and then running the engine for 30            minutes, including two full-power dyno runs. Then the break-in            oil is drained and the filter removed and the next oil is            added. This exact same procedure is repeated when the bearings            are changed. This ensures that the results will be as accurate            as possible.<\/p>\n<section class=\"group-caption group-caption-rendered\">\n<ul class=\"list-attachments thumbnails row-1 clearfix\">\n<li class=\"thumbnail col-2\"><a                  class=\"group-caption-image-box\"  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-38-23_272427.jpg\"                  rel=\"shadowbox[sbpost-2207214];player=img;\"  data-image-mobile=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-38-23_272427.jpg\"                  moz-do-not-send=\"true\"><img decoding=\"async\" style=\"display: block;\"                    alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-38-23_272427.jpg\"                    data-lazy-loaded=\"true\" moz-do-not-send=\"true\"                    width=\"50%\" height=\"50%\" border=\"0\"><noscript>&lt;img src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-38-23_272427.jpg&#8221; alt=&#8221;&#8221;&gt;<\/noscript><\/a><\/li>\n<li class=\"thumbnail col-2\"><a                  class=\"group-caption-image-box\"  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-38-29_781887.jpg\"                  rel=\"shadowbox[sbpost-2207214];player=img;\"  data-image-mobile=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-38-29_781887.jpg\"                  moz-do-not-send=\"true\"><img decoding=\"async\" style=\"display: block;\"                    alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-38-29_781887.jpg\"                    data-lazy-loaded=\"true\" moz-do-not-send=\"true\"                    width=\"50%\" height=\"50%\" border=\"0\"><noscript>&lt;img src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-38-29_781887.jpg&#8221; alt=&#8221;&#8221;&gt;<\/noscript><\/a><\/li>\n<\/ul>\n<p class=\"wp-caption-text\">This photo shows the uncoated XP              rod bearing on the right after running loaded for over three              hours using a 5w20 conventional oil. The same test with the              same oil was performed on the King pMaxBlack XP bearing on              the left. The wear reduction is obvious. <\/p>\n<\/section>\n<p>The accompanying results chart also lists the additive            package. Zinc and phosphorus (ZDDP) are anti-wear additives            that most enthusiasts are familiar with. Molybdenum and boron            are friction-reducing additives while calcium is employed as a            detergent. These were the main additive package ingredients            for both the conventional and the synthetic oils so that the            only difference was the base oil.<\/p>\n<div class=\"ad responsive-ads clearfix apply-responsive-ads            clearfix with_sidebar select-cluster_1 processed\"            style=\"width: 990px; padding-right: 0px; padding-left: 0px;            margin-left: -30px; max-width: none;\"            data-displayed=\"cluster_2;cluster_3;cluster_1\"            data-group-reponsive=\"desktop\" data-banner-count=\"\"            data-select-cluster=\"cluster_1\">\n<p><input class=\"ad-sizes\"                value=\"cluster_1;cluster_2;cluster_3\" type=\"hidden\"><input                class=\"ad-avoid-duplicate\" value=\"1\" type=\"hidden\"><\/p>\n<\/p><\/div>\n<p>After the first test sequence with the petroleum-based oil,            Shavers\u2019 engine builder, Keith Chrisco, removed the first set            of bearings and added a second set of identical XP bearings.            He then ran the engine using the mPAO-based synthetic 5w20            oil.<\/p>\n<p>The third test involved switching to a new set of King\u2019s            pMaxKote rod and main bearings, but returning to the            traditional mineral base 5w20 oil. The fourth and final test            saw the installation of another new set of pMaxKote bearings            run this time with the synthetic oil. This created a            comparison of coated and non-coated bearings with traditional            and synthetic engine oil.<\/p>\n<div class=\"wp-caption alignnone\" id=\"attachment_1059340\"            style=\"width: 970px\"><a  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_16-57-08_631000.jpg\"              rel=\"shadowbox[sbpost-2207214];player=img;\"              moz-do-not-send=\"true\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2207315                size-large\" style=\"display: inline;\" alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_16-57-08_631000-960x640.jpg\"                data-lazy-loaded=\"true\" moz-do-not-send=\"true\" width=\"960\"                height=\"640\"><noscript>&lt;img class=&#8221;wp-image-2207315 size-large&#8221; src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_16-57-08_631000-960&#215;640.jpg&#8221; alt=&#8221;&#8221; width=&#8221;960&#8243; height=&#8221;640&#8243; \/&gt;<\/noscript><\/a>            <\/p>\n<p class=\"wp-caption-text\">These are five of the lower,              uncoated XP bearings as they were pulled directly from the              engine after running the test using conventional oil. As you              can see, there is considerable wear.<\/p>\n<\/p><\/div>\n<p>The evaluation criterion for each test would be a comparison            of the wear count of the different metals (in ppm) by            analyzing the oil drained from each test. The testing was            performed by <a href=\"http:\/\/www.speediagnostix.com\"              target=\"_blank\" moz-do-not-send=\"true\">SPEEDiagnostix<\/a>, a            new oil evaluation company using the same metal spectrometer            techniques as is used in current Formula 1 racing.<\/p>\n<p>The best way to really load these bearings and ensure that            the test schedule would be both consistent and survivable was            to pull the aforementioned small-block Chevy down to an            extremely low RPM with a high load. The <a              href=\"http:\/\/www.superflow.com\" target=\"_blank\"              moz-do-not-send=\"true\">SuperFlow<\/a> dyno was able to pull            this little Chevy down to 1,450 rpm for a total of three hours            and fifteen minutes for each of the four tests. During this            time, the low-RPM test was interrupted so the engine could            also be subjected to a complete test up to just past peak            horsepower a total of 14 times. Oil and water temperature was            also closely monitored.<\/p>\n<div class=\"ad responsive-ads clearfix apply-responsive-ads            clearfix with_sidebar select-cluster_1 processed\"            style=\"width: 990px; padding-right: 0px; padding-left: 0px;            margin-left: -30px; max-width: none;\"            data-displayed=\"cluster_1\" data-group-reponsive=\"desktop\"            data-banner-count=\"\" data-select-cluster=\"cluster_1\">\n<p><input class=\"ad-sizes\"                value=\"cluster_1;cluster_2;cluster_3\" type=\"hidden\"><input                class=\"ad-avoid-duplicate\" value=\"1\" type=\"hidden\"><\/p>\n<\/p><\/div>\n<p>Instead of horsepower, this test was all about survivability.            In the attached chart, we have condensed a much more expansive            report down to the wear results. The important wear materials            are iron, copper, lead, tin, and aluminum. Both the standard            and coated King tri-metal bearings are made up mainly of            copper, tin, and lead so these would be the major elements            that would indicate bearing wear. Aluminum would originate            mainly from the pistons while the iron would likely be sourced            from the cylinder walls.<\/p>\n<p>While the trace material numbers are relatively low PPM            counts, it is the differences from each test that is            compelling. Let\u2019s start by explaining each category in the            results sheet. The Oil Type indicates the type of oil \u2013 either            conventional or synthetic. The Bearing Type indicates whether            the bearings were coated or uncoated. The Oil Viscosity Index            is a rating system applied to engine oil that indicates how            much an oil viscosity changes over a wide temperature range.            The higher the number, the more thermally stable the oil is            over a wide range of temperature. This means that as the oil            warms up, it loses less viscosity.<\/p>\n<section class=\"group-caption group-caption-rendered\">\n<ul class=\"list-attachments thumbnails row-1 clearfix\">\n<li class=\"thumbnail col-2\"><a                  class=\"group-caption-image-box\"  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_17-06-50_059346.jpg\"                  rel=\"shadowbox[sbpost-2207214];player=img;\"  data-image-mobile=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_17-06-50_059346.jpg\"                  moz-do-not-send=\"true\"><img decoding=\"async\" style=\"display: block;\"                    alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_17-06-50_059346.jpg\"                    data-lazy-loaded=\"true\" moz-do-not-send=\"true\"                    width=\"50%\" height=\"50%\" border=\"0\"><noscript>&lt;img src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_17-06-50_059346.jpg&#8221; alt=&#8221;&#8221;&gt;<\/noscript><\/a><\/li>\n<li class=\"thumbnail col-2\"><a                  class=\"group-caption-image-box\"  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_17-07-07_344913.jpg\"                  rel=\"shadowbox[sbpost-2207214];player=img;\"  data-image-mobile=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_17-07-07_344913.jpg\"                  moz-do-not-send=\"true\"><img decoding=\"async\" style=\"display: block;\"                    alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_17-07-07_344913.jpg\"                    data-lazy-loaded=\"true\" moz-do-not-send=\"true\"                    width=\"50%\" height=\"50%\" border=\"0\"><noscript>&lt;img src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-20_17-07-07_344913.jpg&#8221; alt=&#8221;&#8221;&gt;<\/noscript><\/a><\/li>\n<\/ul>\n<p class=\"wp-caption-text\">This bearing and oil test demanded              the engine be subjected to multiple tear-downs to replace              all the bearings but the results were well worth the effort.              Shavers\u2019 small-block has been torn down so many times it              should have zippers. To save time, Chrisco changed the main              bearings without pulling the crank. He loosened all the main              caps and carefully removed the old bearings and installed              the new ones by pushing the bearing while turning the crank.            <\/p>\n<\/section>\n<p>Also note, that we\u2019ve listed each additive component in ppm.            This is important because this clearly shows that the additive            packages for both the conventional and the synthetic oils were            identical. So this means that any reduction in wear materials            (when comparing oil) must be attributed to the quality of the            base oil and not to the additive package.<\/p>\n<p>Now that we\u2019ve got that handled, the results indicate that            the combination of King Bearings\u2019 MaxKote bearing with an mPAO            synthetic base oil is an excellent way to drastically reduce            wear in an engine. As you can see, the baseline total wear            number of 35 ppm (created simply by adding up the wear numbers            of each individual element) using a conventional bearing and a            mineral-based oil, was reduced 74-percent by using a            high-quality mPAO synthetic like that from Driven Racing Oil,            combined with the pMaxKote bearings.<\/p>\n<div class=\"ad responsive-ads clearfix apply-responsive-ads            clearfix with_sidebar select-cluster_3 processed\"            style=\"width: 990px; padding-right: 0px; padding-left: 0px;            margin-left: -30px; max-width: none;\"            data-displayed=\"cluster_1;cluster_3\"            data-group-reponsive=\"desktop\" data-banner-count=\"\"            data-select-cluster=\"cluster_3\">\n<p><input class=\"ad-sizes\"                value=\"cluster_1;cluster_2;cluster_3\" type=\"hidden\"><input                class=\"ad-avoid-duplicate\" value=\"1\" type=\"hidden\"><\/p>\n<\/p><\/div>\n<p>Just changing to the coated bearings while retaining the            conventional oil also produced a significant improvement,            reducing the overall total wear count from 36 to 21 ppm, which            is a 40-percent improvement in wear. This reveals the            significant increase in durability from the coating itself.            This is especially important when you get into a            cost-performance ratio because the coated King bearings are            roughly only 40-percent more expensive compared to non-coated            rod bearings for a small-block Chevy.<\/p>\n<p>You will note in the results a somewhat            higher-than-anticipated lead wear metal reading in the third            test with an uncoated bearing and the synthetic base oil. The            lead is the dominant metal found in a tri-metal bearing            overlay (lead babbit), so wear was slightly higher in this            case compared to the conventional oil. While every attempt was            made to keep the testing as standardized as possible, there            are any number of variables that could account for this higher            number. While the lead numbers were higher than any other            test, the total wear metal count was still lower than uncoated            bearings with conventional oil.<\/p>\n<div class=\"wp-caption alignnone\" id=\"attachment_1059286\"            style=\"width: 970px\"><a  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-05-31_719343.jpg\"              rel=\"shadowbox[sbpost-2207214];player=img;\"              moz-do-not-send=\"true\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2207309                size-large\" style=\"display: inline;\" alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-05-31_719343-960x640.jpg\"                data-lazy-loaded=\"true\" moz-do-not-send=\"true\" width=\"960\"                height=\"640\"><noscript>&lt;img class=&#8221;wp-image-2207309 size-large&#8221; src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_23-05-31_719343-960&#215;640.jpg&#8221; alt=&#8221;&#8221; width=&#8221;960&#8243; height=&#8221;640&#8243; \/&gt;<\/noscript><\/a>            <\/p>\n<p class=\"wp-caption-text\">Shavers\u2019 383ci small-block Chevy              has been horribly abused over dozens of dyno tests over              several years and is still going strong.<\/p>\n<\/p><\/div>\n<p>While the synthetic oil used in this test was a custom blend            to standardize the additive packages, Speed said that a Driven            oil that would be comparable to the mPAO synthetic used in            this test would be Driven\u2019s XP line of race oils. These are            available in several different viscosities based on how the            engine would be used, ranging from a 0W to a 15w-50. This oil            is more expensive, but when you consider the expense involved            with rebuilding an engine, the cost is easily justified,            because the oil will last so much longer with lower wear metal            contamination.<\/p>\n<p>Engine wear isn\u2019t something that most hot rodders stress            over, but with the sizable investment that most engines            demand, perhaps it is a subject that should be given its fair            share of attention.<\/p>\n<div class=\"wp-caption alignnone\" id=\"attachment_1059241\"            style=\"width: 970px\"><a  href=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_22-55-53_108570.jpg\"              rel=\"shadowbox[sbpost-2207214];player=img;\"              moz-do-not-send=\"true\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2207308                size-large\" style=\"display: inline;\" alt=\"\"  src=\"https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_22-55-53_108570-960x445.jpg\"                data-lazy-loaded=\"true\" moz-do-not-send=\"true\" width=\"960\"                height=\"445\"><noscript>&lt;img class=&#8221;wp-image-2207308 size-large&#8221; src=&#8221;https:\/\/www.speednik.com\/files\/2018\/12\/the-secret-life-of-bearings-a-test-of-bearing-and-oil-wear-rates-2018-12-19_22-55-53_108570-960&#215;445.jpg&#8221; alt=&#8221;&#8221; width=&#8221;960&#8243; height=&#8221;445&#8243; \/&gt;<\/noscript><\/a><\/div>\n<\/p><\/div>\n<p>      <\/div>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>By Jeff Smith February 14, 2019 It can be a very tortuous existence for engine bearings. Think about it. Bearings [&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-2329","post","type-post","status-publish","format-standard","hentry","category-techpost"],"_links":{"self":[{"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/posts\/2329","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=2329"}],"version-history":[{"count":0,"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/posts\/2329\/revisions"}],"wp:attachment":[{"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/media?parent=2329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/categories?post=2329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maxtorqueperformance.com\/staging\/index.php\/wp-json\/wp\/v2\/tags?post=2329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}