Lubricants: David Vizard Dyno Tests Joe Gibbs Racing Oil -

Lubricants: David Vizard Dyno Tests Joe Gibbs Racing Oil

David Vizard Dyno Tests Joe Gibbs Racing Oil - In Joe Gibbs' Racing Engine!

Back in the spring of 2005, I received a call from Joe Gibbs Racing’s (JGR) Lake Speed, Jr.

Lake had called to tell me about the new flat tappet racing oil that they had brewed and were running in Tony Stewart’s #20 car. He sent extensive test results (run then on a "Busch" motor) and I had to admit, they looked good.

The numbers Lake had sent were comparisons of a number of top, high quality racing oils, versus their new flat tappet XP2 oil. These results showed an improvement of about 1.68 hp increase over the next best oil. To maximize power from these engines it’s necessary to build an engine with low friction to start with. This means low tension rings, etc.

Because these engines are inherently low friction units to start with showing any improvement is difficult, so, bearing that in mind, the gain shown looked good.

The first engine I tested JGR’s XP2 oil in was a hydraulic flat tappet "cammed" 5.0L Ford motor making a nominal 350 hp. To get our baseline numbers, 10 pulls were made with all significant parameters held constant at the start of each run. The best and worst numbers were then thrown out and the remaining 8 averaged.

Next a flushing oil/filter change was made using XP2. The engine was then run for about 5 minutes and a final oil/filter change made.

Again 10 runs were done. After the best and worst were thrown out the average increase came to 5.86 hp! Although I was very sure of the test procedure I was far from happy about an increase this large. As soon as the opportunity arose I ran the same sort of test with my dirt car motor.

This Super Street Stocker equipped with a 350 Chevy was sporting a solid flat tappet cam conforming to a .500" valve lift rule. This test showed XP2 to be 3.1 hp better than the Mobil 1 baseline oil. This looked a little more realistic but just to seal the deal I asked Lake Speed if I could come along and sit in on a re-run of their original tests.

Please understand that although my dyno works well and is regularly calibrated it is hardly the million dollar plus deal that JGR’s #1 dyno is.

With a restrictor plate motor on the JGR dyno, the same 10 runs were done. So you have an idea of the accuracy of this dyno the mean deviation of all 10 runs is contained within 0.3 hp. This gave me great confidence in the accuracy of the numbers delivered. The oil change, with flushing, involved the use of over 20 gallons of XP2. The results of subsequent tests showed an average of 1.88 hp increase.

Although the foregoing looks much like a power test it should be remembered that NASCAR NEXTEL Cup car engines have to use flat tappet cams, which, in an effort to get power, are very hard on the valvetrain. Since JGR engines are not only showing good speed but also surviving, I made the assumption that this oil is up to the job of keeping the lifters and cam profiles in shape.

As for the big increases on my tests, I’m assuming that in the first test the lifters were sealing up better, hence the relatively high number. In the second instance the dirt motor, being built all of cost-cutting parts, does not have the benefit of ultra low friction as a starting point.

Ex-aerospace engineer David Vizard, is one of the world’s most widely published automotive writers. He is also a university lecturer, holds numerous patents and is a winning engine/car builder.

You May Also Like

DENSO, Manufacture 2030 Partner to Improve Sustainability

DENSO’s targets include reducing the carbon outputs of its global supply chain by 25%, by the 2030 fiscal year.

DENSO is collaborating with Manufacture 2030 to boost supply chain sustainability. Through the partnership, which began last spring, DENSO is encouraging its suppliers to join Manufacture 2030's cloud-based platform, a tool that allows participants to measure, manage and reduce carbon emissions from their operations.

The initiative will assist DENSO's pursuit of its Scope 3 emissions targets, meaning emissions that stem from the manufacturer's supply base. Released in August 2023, DENSO said its targets include reducing the carbon outputs of its global supply chain by 25% by the 2030 fiscal year, compared to the 2020 fiscal year, and reaching carbon neutrality across its global supply base by the 2050 fiscal year.  

BBB Industries Releases Corporate Sustainability Report

This year, BBB set a goal to decrease its scope 1 and scope 2 emissions by 50 percent before 2027.

Bendix Releases Technical Materials for ADAS Support

They are designed to help technicians properly set up, inspect, and diagnose several components integrated with ADAS.

Continental Celebrates Expansion in South Carolina

The 90,000-square-foot-building has capacity for 350 employees and is designed and built for future expansion potential.

Dana to Participate in Easter Jeep Safari 2024

The event will take place in Moab, Utah, March 23-31.

Other Posts

MEMA Applauds EPA on Light- and Medium-Duty Emission Standards

MEMA says the EPA final rule includes an amended and more comprehensive analysis of technological alternatives.

ZF Aftermarket Releases 80 New Parts

The latest additions expand coverage to more than 5 million vehicles in operation.

Schaeffler Highlights ESG Progress in 2023 Sustainability Report

Schaeffler is currently focusing on seven key ESG goals in the implementation of its sustainability strategy.

Sun Auto Acquires Carrollton Complete Automotive

Sun Auto said the acquisition will help with its expansion across Texas.