OS 91 Glow Plug Thread Size?
10-22-2002 | 12:06 PM
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From: Lakeville , MN,
OS 91 Glow Plug Thread Size?
Some how the glow plug threads on my OS 91 got trashed, and I was wondering what the proper tap size would be to clean out the threads? I do know it is not 1/4-20, since the threads are much finer that that.
If the threads are really bad, I may need a helicoil insert, but I thought I would try re-tapping first.
If the threads are really bad, I may need a helicoil insert, but I thought I would try re-tapping first.
