[Amc-list] 232 combustion chamber

[Tom Jennings <tomj@xxxxxxx>]

So my 232 has flat-top pistons, no valve reliefs, and the combustion 
chamber is a simple wedge. I thought it had a flat shelf for squish, but 
   it just tapers down to flush on the side away from the plug.

I've never been able to run much ignition advance on this motor. The 
compression is high (9.5:1) so maybe that's it. Maybe some predetonation 
from the crud in the head? It wasn't too sharp though. Plugs were the 
right color, no detonation damage. Though this thing has pinged very 
lightly under heavy loads in hot weather, there's no sputtery crap 
anywhere, so I guess I kept it OK.

LP and synth oil sure runs clean! 20 years and I just wiped the top of 
the piston with a clean rag to read ".030" on the piston top. If there's 
cylinder top ridge it's pretty damn small. No black crud under the valve 
cover at all, just clean oil. I assume the bottom end is the same. No 
way I'm touching that. I'll put up with the slight pan leaks.

When I put the head back on, I'm gonna take Widdiker's advice and run a 
bead of JB Weld around the head to block seam!
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