| Description: |
cylinder shim set of 4 .040".
For 85.5 & 87mm bug cylinders. Set your deck with these. The more shims you add, the lower your compression ratio. Empi
I recommend instead of adding .040 below the cylinder, use the .040 steel head spacer/ gasket part# 21-7616 on TOP of the cylinder. Allow that piston to come further up in the cylinder. This lets the combustion process take place in the combustion chamber NOT in the cylinder. The more combustion that happens in the combustion chamber the more free horsepower you get. |
