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Ball valve ball lapping in production how
Mar 11, 2010In the late 70's I built a grinder to grind 3 ball valves that had a stem about 3 long out each end. I used a surface grinder and part of a between centers O.D. grinder. The same set-up should work for lapping using a VFD to slow down the RPM and make a cup type lap. (The ball valves were first machined on an NC machine.)
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General directions for grinding valves on most engines with out expensive tools and with the know how to accomplish a very good job you will need a few simple things like 1.hand drill Thanks for the insight but I just broke down and took them to a machine shop for testing and a valve patch job. In order to install he heads on this
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