Couple of questions, now that the head is at the machine shop:
1) where is it that these heads tend to crack?
2) I have 3 heads with 2 different head castings (left the paper with the numbers at the shop) Two have the heater water outlet at the rear, one at the front. I think the one with it at the front is the earlier design, and the one more prone to cracking..can anyone help here?
3)given the odd head deign, part of the chamber is well over the block deck, the shop did not see that there really would be any gains byn improving the deck height. The pistons are currently about 0.032" below the deck. As far as the odd head design, about 1/2 of the exhaust valve is over the deck, and the head gasket is .070" compressed. Only a small part of the piston would meet the flat part of the head, and so there may be no gains other than compression ratio, which I don't need. Any thoughts on this?
Ron Dame
'63 Champ
1) where is it that these heads tend to crack?
2) I have 3 heads with 2 different head castings (left the paper with the numbers at the shop) Two have the heater water outlet at the rear, one at the front. I think the one with it at the front is the earlier design, and the one more prone to cracking..can anyone help here?
3)given the odd head deign, part of the chamber is well over the block deck, the shop did not see that there really would be any gains byn improving the deck height. The pistons are currently about 0.032" below the deck. As far as the odd head design, about 1/2 of the exhaust valve is over the deck, and the head gasket is .070" compressed. Only a small part of the piston would meet the flat part of the head, and so there may be no gains other than compression ratio, which I don't need. Any thoughts on this?
Ron Dame
'63 Champ
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