23 cc's is with the piston in the hole , tdc.
The piston, like that..will be entirely sub deck...below the deck. The quench pad unmachined comes up .080 above the deck normally.
You should measure with one piston n rod assembled on the crank in the block.
I spec with a 60cc...and no quench pad..that you would be near the lower 9.1 realm.
23 cc's is with the piston in the hole , tdc.
The piston, like that..will be entirely sub deck...below the deck. The quench pad unmachined comes up .080 above the deck normally.
You should measure with one piston n rod assembled on the crank in the block.
I spec with a 60cc...and no quench pad..that you would be near the lower 9.1 realm.
I have a piston assembled on the rod on the crank and at TDC I am about .040 in the hole to the quench pad which is now the entire diameter of the piston since the raised area has been completely milled off. That’s with a machinist straight edge and feeler gauges but will confirm with a depth mic tomorrow.
So should I move forward with calculating my compression ratio with a piston dish of 9cc plus my volume remaining cylinder volume?
