Not Ranked
The cranking compression numbers (~ 185lb ) seem quite high for the cam & static compression you have mentioned and comparing your Autolite 3924 to Champion numbers ( RC12YC ) they seem too hot compared to similar stuff I have built ( RC9YC ). Can you verify following?
1. Bore & Stroke
2. Head Combustion Chamber Volume ( 58cc or 72cc ).
3. Assembled Piston to Head clearance.
4. Piston part # or dish volume.
__________________
Jac Mac
|