Ok so my car is overheating. so i take the head off and remove the gasket. i take the head in to get it milled. the guy turns it over and says its already been milled. he guesses that if he mills it anymore it will be over spec and cause more problems. Is this guy full of it? He said he guesses its been milled 12 thousandths and that the mais 16 thousandths. he said its warped by 8 thousandths so he has to mill it another 10 thousandths which will total 22 thousandths. Mill it again ? or get a new head? I need to know quick so i can drive it. Thanks for the help.

 

Well I'd say hes full of bull...most machine shop guys are.

I've milled mine till 40 thou

I doubt your head is warped 8 thou from over heating unless you did some hardcore driving with the temp gauge in the red for like 2hrs.

Anyway...tell him to bring take it to 30 slap on a cam gear to bring your timing back to spec as the milling will retard your timing and set your distributerr timing and have fun.

 

Depends on what engine, if its a d series you can grab heads for relatively cheap. Get a 2nd opinion.