Quote:
Originally Posted by frontline762
So just kind of expounding on another thread (9k rev limiter) . An AP1 could very well rev up to 10k without potentially causing any problems. But an AP2 should'nt be rev'd to just 9k, or else the thing will like potentially throw a rod or somethin'? ...just askin'....pleasepleaseplease dont anyone get mad...lol
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Just a few notes before I start:
F20C = 2.0L S2000 engine
F22C = 2.2L S2000 engine
The piston speed of the F22C @ 8k is about the same as the F20C @ 9k. But the stress/forces involved rise greatly with increased rpm.
As piston velocity increases you put increased wear on rings, rods and bearings. The increased stroke length of the engine creates high sideloading on the cylinder walls which at lower rpms would probably not be an issue, but when things get exponentially bigger at higher rpms it may certainly be an issue.
I have heard of somebody running the early model ECU (F20C) on a late model engine (F22C) that supposedly didn't cause problems. But I'm not sure if it was a race car and like all race cars they rebuild their engine quite regularly, or if it was a daily driver.