Re-surface cylinder head for more compression?

Have a good trip.....Looking forward to all the info! ;-)

Personally if our engines are 6.6 to 1 compression....I'd like to bump it 1 point which is still pretty conservative I think.

Andrew
 
What does a machine shop use to shave the head?Does anyone know of thinner head gaskets being sold? That would bump up compression a bit and you could easily go back if you dont like it.
 
Forget about milling it. Just get a GOOD sheet of flat glass, 12"x12" or a bit larger. Get several grades of wet/dry sand paper. Mix up a fairly strong dish soap/water solution (NOT dishwasher detergent powder or liquid). Wet the paper, glass, head.....start with the roughest grade (maybe 180 grit?) and go in a orbital pattern. Rinse well between paper grades to get the larger chunks out. Go to a 220-300-400 (I can't remember the exact grit numbers)

I took off about 0.008" this way. Make sure you use a new head gasket, and I used the aluminum flake paint coating on the new gasket as well - installed wet. It does make a difference in low end torque and medium high power. Not huge, but noticeable and not such a huge difference that reliability is sacrificed.
 
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Forget about milling it. Just get a GOOD sheet on flat glass, 12"x12" or a bit larger. Get several grades of wet/dry sand paper. Mix up a fairly strong dish soap (NOT dishwasher detergent powder or liquid) solution with water. Wet the paper, glass, head.....start with the roughest grade and go in a orbital pattern. Rinse well between paper grades to get the larger chunks out.

I took off about 0.008" this way. Make sure you use a new head gasket, and I used the aluminum flake paint coating on the new gasket as well. It does make a difference. Not huge, but noticeable and not such a huge difference that reliability is sacrificed.

Good simple and to the point suggestions. Used to flatten warped heads on some of my small engine equipment that way. Worked well.

You could be a redneck if you use sandpaper too..............:)
 
This thread. It has drifted.

Back to the head. Polishing. Head. OK enough.

I'll just add mine doesn't leak, but I did replace my khrappy studs last go around.
 
I believe a machine shop would use a milling machine and a larger end mill to do this. the hardest part would be settin it up so it's level, but it could be done.
 
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