the cylinder is in the shop for a re bore so i was thinking of having the head shaved. and how much should i get shaved off? and how much more power will it give the engine. i still want to run on pump gas (92 OCTANE).

 

The manual says you can run 89 octane so if you are running 92 now you could get a slight power increase by going to the correct fuel.


I shaved mine on my 86 .020”. It gained more power than a aftermarket pipe. I also run 87 octane even though it’s higher comp and is supposed to run 89 minimum stock. On 87, it has way more power than on 93 octane.

 

well i havent riden it yet so i dont know what correct fuel is the right one for me.im doing a ground up rebuild on it.i have a fmf pipe and a fmf silencer with after market reeds engine is bored 40 over now if i shave the head .020 will i see a power difference in the motor.i own all 4 strokes so this is my first 2 stroker(besides the sled).....thanx for the info tom!