Reply to "Head Milling."

italfordMember

I would do a couple of things if I were you.

1. Calculate the static compression ratio. That means take off one head and CC it with a burette etc. Using a dial indicator measure how far your pison is in the hole. Get specs on your pistons and head gasket. Do the math. You can find it in summits how to section.

2. Now that you know your correct compression ratio now you can make a decision. 10:1 is about the limit for pump gas. Aluminum heads you can go a little higher.

BTW you won't see much of a difference either way by simply varying the compression ratio. Try to get it in somewhere between 9.5 and 10.5 and you are good.

5/8/121:51 PM

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