NRSRotorsports

The Ceramic Apex Seals were installed in a 1987 13B Turbo. This vehicle is used as a commuter vehicle, which commutes 60 to 70 miles a day, 5 day a week.
Under street conditions, we broke in the seals for 744 miles.
Our first test on the seals was at The Streets of Willow Road Race coarse, in California. We ran 10 hard laps at 15 psi of boost, on 91-octane fuel. The temperature at the track was 106 degrees Fahrenheit.
The next test was at 1200 miles. We took it to LA County Raceway for a weekend of drag racing. The seals held up through the abuse of 20 passes on a ¼ mile track.
At 3600 miles we did high speed testing. We ran in 5th gear at 7100 rpm for about 5 miles.
After more commuting and several speed contests with other cars. The engine detonated, which broke two Ceramic seals, a side seal and the rear iron at the dowel pin. To our surprise, the housings survived. After replacing the seals with steel apex seals, which broke after only 500 miles, we found out that it was a wiring problem. Which we determined was there from the beginning. Meaning, your seals lasted 3600 miles with a wiring problem and the steel seals only lasted for 500 miles.
If it wasn’t for the problem, we believe that the seals would have lasted through a lot more of our abuse. It is a shame that our testing of your seals was cut short by a wiring problem, but as they say, “That’s racing.”
I believe that the quality of machining and the tolerances held, rival any Ceramic seals on the market.
Sincerely,
Jeff McCall