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Old 02-10-2010, 03:43 PM
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CarbonJoe
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Originally Posted by Skiddins
Can anyone tell me what sort of RPM a 10.5 and a 13.5 motor are reaching at the top end, I know it's a bit dependant on gearing etc but a rough idea would be fine. The figure without turbo etc.

I do remember 27t's used to reach 25k off load but would get nowhere near that on track.

I'm interested to know as I want to better understand the upper rpm limit for the timing.

Thanks
Skiddins
Running basically Schreffler's 13.5 setup with a Duo1 17.5, 6.56 FDR, the Novak Sentry data logger showed it was getting up to 32,250 RPM on a 90 ft x 40 ft carpet track (and that was with a chicane entering the straight!) Crazy fast!
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