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81na ZX »
https://forums.nicoclub.com/81na-zx-u24307.html
Wed Aug 03, 2005 7:02 am
Considering just piston speeds:
A Stock early S2000 has a stroke of 84mm and a redline of 9000. That makes for a 4960 fpm piston speed.
A CA18 has a stroke of 86mm, so to get that 4960 fpm, you'd be at about 8800RPM. Thats about the limit for OEM components.
With some nice internals built for high speeds, 6000 fpm can be safe.For a CA, that comes at about 10,625 RPMs.
Doesn't take into effect Rod ratio, and valve train.