bubbac9969 Posted March 27, 2010 Report Posted March 27, 2010 Can someone tell me how far i can shave the stock head on my banshee? how far and still run pump gas? how far and still be safe on race gas? Thanks. Quote
AKheathen Posted March 27, 2010 Report Posted March 27, 2010 .030" for pump gas, and that's also as far as you can go before you have re-chamber it Quote
cobrabc1993 Posted March 28, 2010 Report Posted March 28, 2010 x2 on the .030"..................... Quote
bubbac9969 Posted March 29, 2010 Author Report Posted March 29, 2010 x2 on the .030"..................... do you mean .060 then? Quote
SAVAGE420 Posted March 29, 2010 Report Posted March 29, 2010 do you mean .060 then? No he means he agrees with the .030. Quote
dajogejr Posted March 29, 2010 Report Posted March 29, 2010 Without knowing this guy's complete setup, I wouldn't recommend anything over .015 or .020. I've seen stock heads from 22cc to 24cc...uncut, unchanged. That's a factory variance and it's a lot. You didn't mention your elevation, what octane fuel you have access to, the temps you ride in, if it's ported, stock crank, stroker crank, etc. I'm sure plenty of people have run .030 shaved heads on pump gas...I'm sure plenty others have blown a motor up. You really need to check the squish band and taper before you even take the head off...and make an estimated guess where you'll end up with a shaved head. I wouldn't want any less than .042 clearance to run pump gas... Also, is your timing stock? Compression ratio dictates the need for octane mainly, timing in reasonable amounts dictates octane need secondarily. Quote
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