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Author Topic:   max rpm
Dirt Full Roller

Total posts: 51
posted September 24, 2001 06:25 PM
What is the maximum rpm's that a stock motor can safely turn?

Dirt Freak

Total posts: 224
posted September 25, 2001 09:42 AM
well i have run stock motors except for the valve srings and cam, and arp rod bolts. i have used the oem cast pistons and have run the engines as high as 7200 rpms but dont advise it. it gets to be too hard on the cast pistons and i have lost engines this way. if you have cast pistons i would limit rm to 6200-6600, my problem going higher was the wrist pins pulling out of the piston on the cast ones and when that happens it pretty much destroys the whole engine.

[This message has been edited by CUSTOMPERFORMANCE (edited September 25, 2001).]

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