Author Topic: Dolmar 7900 Porting Info  (Read 4072 times)

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Offline EHP

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Re: Dolmar 7900 Porting Info
« Reply #10 on: January 05, 2012, 11:22:52 pm »
then put a wider skirted piston in it , remember some saws have a real wide skirt piston in them at these GTG's so pretty much a real racesaw , if you use the stock piston get the compression up as high as you can as that helps the 7900 alot and the higher compression works very good with the tight crankcase volume , if you raise your transfer ports to high it will boil the gas in the crankcase real bad and have less power so watch how high you raise them

 

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