ontario sledder
Member
hey guys, what has everyone found that works the best for shaving their head? how many thou did you take off? .002? .01? and how does it perform? 2003 yamaha viper. thanks in advance
BornYamaha
Member
You can take one layer of the head gasket out as opposed to shaving the head. Can't tell you how much performance it will gain you myself since my sled was ported at the same time. Need to use good fuel and check jetting.
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Mac
Member
These Viper engines are high compression from the factory. Unless you plan to run race fuel or a blend. Be careful.