head milling on gsr
#1
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head milling on gsr
I have acquired a spoon 2 layer HG from a friend of mine in the quest for a little bit more compression. I had thought that it would be a good idea to get even more compression out of this setup (while using stock bottom end) by gettin my stock p72 (gsr) head milled. I was wondering if anyone knew the service limit on GSR heads when it comes to milling?? I am currently looking at gettin it milled .020 or .010... both offer a decent compression increase that i see worthwhile. Any recommendations, how far can i go without having to worry about hitting valves with the 2 layer (stock cams).?????
My actual GOAL for this would be a compression ratio of about 10.4 to 10.6.
My actual GOAL for this would be a compression ratio of about 10.4 to 10.6.
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Re: head milling on gsr (jdmb18ckid)
I dont have the money to go for an allout bottom end build , 10.6 compression over 10.0 would be a pretty good difference for the little money you spend on milling and this headgasket............. why not?
#4
Re: head milling on gsr (GSRmorris)
the JDM GSR (10.6) over the USDM GSR (10.0) isnt very much different. its unnoticeable.. u should mill your head to get at least 11.1 compression. i will raise my JDM GSR motor to 11.5 soon and run bigger cams g/l
#5
Re: head milling on gsr (jdmb18ckid)
If you obtain 11 to 1 compression by milling your head, it will probably result in valve to piston contact. I dont think anyone has milled that much off their head.
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11-24-2003 09:16 AM