Static Compression Ratio

Did you know.... Static compression ratio is the ratio of cylinder and chamber volume from bottom dead center (BDC) to top dead center (TDC). To calculate compression ratio you need to know your swept volume (displacement), cylinder head chamber volume, gasket thickness and diameter, deck clearance, and of course piston volume whether it be positive or negative. A dish piston will add to the volume of the combustion chamber where as a dome will make the effective chamber volume smaller. There are physical limitations to how much compression can be achieved such as chamber shape and valve pocket depth necessary for your camshaft. The deeper the valve pockets the more dome is needed and you can end up with a very tall sharp dome that shrouds valves and impedes flame travel. When ordering pistons it is very important to be ready with all of this info so we can design you the best part possible. #cpcarrillo #cppistons #piston #custompistons #staticcompression #cylinderhead #enginebuilding #enginetech #themoreyouknow #techtuesday #welovewhatwedo