How can you surface off a head while maintaining stock components

[T-Flexx]

Interested in building a second head off the car. If I have to get it surfaced how much can come off while keeping stock timing belt and other components??

 

[fun kart kid]

Normal you just surface it just enough to clean it up and get the warp out if any. are you wanting to raise the compression by milling the head ?

 

[c2ypt1c]

http://www.dsmtuners.com/forums/cyl...how-measure-4g63-cylinder-head-thickness.html

The Mitsubishi factory manual says a combined total of .008 may be removed from the block and head.

AERA (Automotive Engine Rebuilders Association) says .015 can be milled from the head.

So by AERA specs the Min thickness will be 5.185

It's a good idea to do the oil port mod also, because each time you surface the head, the port clearance gets smaller and smaller.
http://www.dsmtuners.com/forums/newbie-forum/341028-4g63t-head-oil-port-mod.html

 

[T-Flexx]

Not looking to raise compression. Just didn't know if there was a set number like .008 or something that would be considered to much.

 

[GSXtra]

To much is hitting the valves with the pistons. Other than that you will want to do the oil port mod anyway

 

[BogusSVO]

The FSM says a combined total of .007 from heand and block.

AERA says .015 from the head.

I have seen heads as thin as 5.165 run and be fine with stock cams and std valves

 

[T-Flexx]

OK any idea how much can be taken off if i want to run gsc s1? I haven't even seen the head yet so i am not sure if it is warped that badly or not. I am going to look at it tomorrow.