Milling of a 810 casing W-2 head

mopfried said

They look thin around some of the cooling holes. I cc'ed them a while back and it seemed that they had not been cut. Decking the block makes since, dollar wise much cheaper than pistons. How much should the pistons stick out?
If i remember correctly the open area was about .070"-.075" deep. If the pistons stuck out .070 with a .035 gasket that should be good quench. I have access to machine pockets in the pistons to drop the compression down if need be. I want to run pump gas.

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Some of it depends on where the rings are. You can only get the piston up in the bore as far as the rings lest you. But .060-.080 usually isn't an issue.

Measure the recess in the heads before you start. About the deepest I've seen them is .110 but most by now if they've been surfaced will be in the .080-.090 range.
Get the heads flat and equal first, then decide how far you need to get out to the hole. I wouldn't be afraid to call Cometic and get some gaskets that are .027 thick and use them. It will take less milling of everything.