Matt, to catch up on your earlier query:
Quote:
Originally Posted by Matt G.
Your comment about the stem diameter supports my overall distrust of aftermarket parts. Since your aftermarket valves are about 2 thou undersize, you will probably lose oil through the valve guides, particularly if you did not replace the valve guides. Do the valves wobble in the guides? If so, you will have problems sooner or later, if not, you may not. Have you measured the stems of the valves you removed?
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I did measure my original valve stems, way back in the thread. But I used the same caliper that I mis-measured these with, so they may have been fine.
The machinist checked the valves in the guides with me watching, and they were solid. In fact, when I first picked up the block I had the valves in hand and he wound up reaming out the exhaust valve guide a little. If you recall, the engine had a stuck exhaust valve when I got it.
Everything looks pretty good here, and I did actually get a pretty good feeling about this guy this time around. He knows his stuff. The company he works for is a big regional tractor service shop, so he's working on big tractor engines as well as garden tractor engines every day.