Originally Posted by
Rick-O
I've tried searching

....what is a good rule of thumb for engine head shimming? The manual states that if you run more than 25% NM to shim 0.1mm, but I'm not sure it's that simple. Can someone help? I am going to be running 30% Byrons with either 9% or 11% lube.
Also, does anyone know what piston/sleeve/con rod I will need once it's time to rebuild?
Thanks guys!!


So is the shim rule put 1 0.1mm shim for every 5% increase in nitro over 25%? Also, after some more digging I discovered that the piston/sleeve/con rod in the Shark 10 is the same as the Buggy 11 engine, but I don't see it available for sale anywhere.......any thoughts?