Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Condition of Head for core return?
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Old 03-05-2012, 02:36 PM   #2
K Dog
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I suppose if it had been flat milled a tad ~.010-.020" would be OK. We do alot of higher compression heads where we are requested to mill them further than the regular amount, and then that would be ok. And I suppose if it had a valve job on stock valves it would be OK as I'm sure there would be far greater material removed when we cut it for the big valves. But no other work - "porting" or the like would be acceptable.
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