Heads issue

dusterdon said

Have your machinist measure the thickness of the dome on the pistons. You should be able to mill quite a bit off of them. They're old school TRW's. they had thick domes. Much cheaper to mill the pistons.

don

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Thanks for the info, Don. I'll keep that in mind if I need to drop the CR any. As it is, they ran fine on pump gas in this motor's last reincarnation (probably due to the long duration/overlap cam) and while gas ain't what it used to be, I figure the 15:1 blend I'm planning to run should be sufficient to support an 11:1 CR. If not, I'll know in a hurry.