Quote:
Originally Posted by RedCoupe
With very low miles since the last rebuild, I wouldn't think your engine would need new piston rings. But, did you do a compression or leak down test before you tore the engine apart? Also, do the cylinders look good? No scratches or pitting of the hard coating? I would also remove a few valves from the heads to make sure that the valves and the seats don't have any pits or carbon buildup. You can also make sure that the valves aren't loose in the guides and replace the stem seals while you're at it.
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No tests beforehand. Right now all I've seen are the back sides of the valve. All inlet valves look perfect. One exhaust valve (cylinder 5) has signs of oil coating. One ceramic head liner is cracked. No chunks missing. One spark plug on cylinder two is slightly darker. The rest look like this pic.