Best way to fix stripped threads
Well if you have enough material you can all ways drill and tap to the next size. If you dont want to use a helicoil, have the hole welded shut and and redrill and tap to orginal size. Other than that anything else is just a band aid.
TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
If the threads are not too bad, you might try to use a threaded tap with the same thread size and run it through the hole a few times.
Exactly which threads are stripped? Are they the spark plug holes, rocker arm threads, temperature guage, valve cover holes, or some other part?????
Exactly which threads are stripped? Are they the spark plug holes, rocker arm threads, temperature guage, valve cover holes, or some other part?????
Staging Lane
Joined: Apr 2005
Posts: 93
Likes: 0
From: Coastal NC
1. Heli-coil.
2. Drill and tap to larger size.
3. Weld, drill and tap new hole.
4. Drill, tap to larger size, insert plug (with or without sealer/epoxy etc.) drill and tap plug to size.
5. Plug with exotic epoxy such as Belzona Hi-temp Molecular Metal (kit cost about $200). Don't even think about using JB Weld or a simular product.
Just cry once and take it to a machine shop and have it repaired the right way. Or cry every week if you try to fix it on the cheap. There ain't no short cuts or cheap ways to do it right!
2. Drill and tap to larger size.
3. Weld, drill and tap new hole.
4. Drill, tap to larger size, insert plug (with or without sealer/epoxy etc.) drill and tap plug to size.
5. Plug with exotic epoxy such as Belzona Hi-temp Molecular Metal (kit cost about $200). Don't even think about using JB Weld or a simular product.
Just cry once and take it to a machine shop and have it repaired the right way. Or cry every week if you try to fix it on the cheap. There ain't no short cuts or cheap ways to do it right!
