2nd Generation Specific 1986-1992 Discussion

Hand lapping

Old 01-12-2013, 08:29 PM
  #1  
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Join Date: May 2007
Location: New Mexico
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Default Hand lapping

Has anyone ever tried hand lapping, i'm currently doing a rebuild on my 88 FC
and i'm trying to save a little cash.
varianfc3s is offline  
Old 01-12-2013, 09:15 PM
  #2  
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Default Re: Hand lapping

he he funny you mention. I have a bad 20b front plate, water jacket seal corroded out in to the jacket. I was thinking about grinding the bad steel out and slowly adding steel back in with a tig. I was going to use a small die bit to recut the seal groove and "lap" the plate face back down with a diamond hone. I have tig'd in new steel in to a refrigeration compressor valve plate and "lapped" it down as mentioned above. It worked as per recommended amp draw, so efficiency was correct. Of course new valves were used. I do think I would lap a large surface unless I had a big *** pad and lots of time.
slidingsky is offline  
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