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Old 02-29-2020, 06:39 PM
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ronstory ronstory is offline
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Apologies for the radio silence. Got distracted by work and life in general, but I'm baaaack.

The oil pump is at the Amish machine shop in PA to get tested, just waiting on word from Ken. Plus Ken and I have been reviewing the parts list and I'm pretty much a +10 thousands engine. Everything is about 1 thousand over the max for the mains, rods and cylinders.

I do have some questions on the valve guides and tolerances and could use some Afourian wisdom. After reading the rebuild bible a couple of times, the new accepted amount of clearance for valve stems to guides is 0.003-4.

I just measured the guides again and i'm getting pretty much 0.3153-58 for a tight friction fit. If I buy new valves, any idea the nominal size of a new valve? Right now I'm at 0.004 clearance, which is the max with the old valve. I'm trying to figure out I can just replace the valves and keep the original guides.

All feedback appreciated.
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Ron
Portland, OR
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