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FireFighterHill, i'm not saying your wrong in your research. i'm just saying that no one bothers to do this. even when the heads are off and at the machince shop for Fire rings or o-rings, you still don't see P&P'd heads unless it's an all-out race motor. you'd get a lot more bang for you...

the only diesels that get P&P jobs are those that do hi-rpm sled pulling. high is not 3k rpm, high is 5-6k+ rpm. also, at an ambient air temp of about 80°, if you compress it to 12 lbs of positive boost, the resulting air temp is only going to be around 145°. the engine coolant in the...