Quote:
Originally Posted by TurboB15sentra
Mean piston speed, with the stock stroke, @ 8500rpm, is 24.36 meters per second. Around 25 meters per second is considered the "safe" limit for a street engine. However, there are other factors to consider, such as piston acceleration (from BDC and TDC), rod angle, etc.. The SR doesn't have a large stroke, and the rod isn't super short, so, the angle isn't so severe, that it causes tons of sidewall loading. With a good set of rings, and some lateral gas porting, 8500rpm is safe for any SR bottom end, but, I would never spin one up that high unless I had a VE head to take advantage of it.
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Right....I met a guy last week though, who said that he was building a VE head SR that he was gonna rev to 10,000 RPM.
I was like "is that safe" and he is like that is fine.....
Ugh I never know what to think....
04-23-2010, 04:48 PM
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