318 LA rebuild after losing a valve seat
lots of tips
how far down IS the piston and what Did you calculate the compression with the three available gasket thicknesses
ps how many cc's in the valve notchos
what did the heads cc?
how close to your estimates?
I will shoot from the hip here and take a wild guess on what his Compression Ratio will be.
By the piston height in post 118 it's looking like a stock compression height .040 over bore replacement piston sitting somewhere around .140 ths down in the hole up at TDC.
Guessing that is going to be an 8.5:1 short block. So then you figure the closed chambered 302 318 heads, and the fact that there are no valve reliefs in the pistons, and figure the. 028 ths. thin Mr. Gasket head gaskets.
Rock Auto Reman job takes a cut on the heads to clean them up, so lets say .010 there.
All things considered I am guessing he is going to end up at around 9:1 compression.
Will be fun to see what Righty comes up with when he gets all his numbers figured up.
I believe the the Reman 302 heads cc out at 65cc. New Valves in the heads makes them stand up nice, not sunken like a ground in valve job.
The stock '69 318, 9.2:1 compression 230 hp engines had their valve relief pistons sitting .040 ths. down in the hole as a comparison.