Valve to piston clearance?

dartfreak75 said

This is good info!!
So getting the piston closer to the head would reduce the risk of detonation?? You lost me there. I'm sorry I dont know much about quench and detonation yet. I'm just shooting for a 9:5 scr and the combo above is how I got there.
You are correct about the 167s and as much as I'd love to go that route they are out of my price range.

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Yes, as quench increases, the risk for detonation goes down. The added turbulence from quench has a cooling effect on combustion and lower temperatures, thereby reducing detonation.

But IMHO, with your combo, it's splitting hairs, because that cam with 9.5 SCR will not build enough cylinder pressure to worry about. With 220 and 226 degrees duration, even with a 112 LSA, I think you'll be fine. The stock cam was what? like 190 or so degrees duration @.050? Maybe less. Even though it is a small cam, it's still a big increase from stock. I am sure AJ can pull out his computer and give you some cylinder pressure numbers.

In short, what I am getting at is, you will likely not need quench to get to where you want. Yes, you can go to the trouble to make it happen, but IMO it will not really garner you a thing.