Originally posted by techinspector1
Jason, the piston alone is not what determines compression ratio. You must factor in combustion chamber volume, head gasket volume, deck height volume and volume in the piston crown, whether it be dished or eyebrowed.
Read these 2 threads....
http://www.clubhotrod.com/forums/sho...n+ratio+101%2A
http://www.clubhotrod.com/forums/sho...n+ratio+101%2A
Tech, how about dynamic compression ratio ? It stands to reason that the longer the duration on the intake valve and the longer the intake valve is open the higher the piston rises inthe bore befor actual compression takes place.