Compression 10.1:1
Everything was torqued correctly when I built the engine.
I use the highest octane fuel I can get at the pump here in PA, I don't remember what it is exactly though, 93?
The head is flat checked it with a machinist straight edge.
That's the same compression mine has , I was thinking of getting the Alu heads so I'd stop the pinging ,maybe run a lower grade gas , using 94 octane now . Guess it's not that much help .
Now you have me worried that the detonation could do the same on mine . Damn