choover1101 Posted October 30, 2017 Share Posted October 30, 2017 99 EJ25D phase1 how far can the heads be milled before hurting timing. I don't want to go turbo and would like to look at a high compression spare for my daily driver. Sent from my SAMSUNG-SM-N910A using Tapatalk Link to comment Share on other sites More sharing options...
Max Capacity Posted October 31, 2017 Share Posted October 31, 2017 I think the machine shop doing the work can answer that. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
rhd gvr4 Posted November 3, 2018 Share Posted November 3, 2018 I once worked at a machine shop,they let me mill heads.it was so satisfying watching all that metal coming off.i just kept cutting and cutting and cutting,seemed like the deck surface would not go flat.Finally i got it flat! As i removed it from the fixture,i realized i had it set up crooked. I didnt say anything,didnt want to loose my job. The head shipped with new angle on the deck surface.The customer called back to thank us,said his car never ran so good. I wish i was 18 again. Link to comment Share on other sites More sharing options...
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