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Helicoil tap and tool

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Helicoil tap and tool
chuzie Offline
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#1
07-28-2008, 09:06 PM
I need to repair one of the pan bolt holes on my C4 (5/16-18). Thinking about going the Helicoil route but I have no intention of paying 30.00 to make a single thread repair.

I think I could probably make the installation tool out of an old flathead screwdriver with a slit cut in the blade. I really need to know if the taps that come with the kits are a special pitch thread or something standard that I would have in my collection of taps.

Thx.
'77 351w- Explorer EFI, 4R70W, 4-link, lockers, 4.56, 35" MT/Rs with a severe rock addiction.Confusedmokin:
Roads? Where we're going, we don't need roads.

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blazinchuck Offline
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#2
07-28-2008, 09:14 PM
what size is the original bolt hole? I might have the correct heli kit at work and you could get it with the jack. Also the heli's are a completely different tap size.
77 built 306,Trickflow Cam/Alum Heads/dome pistons/10:1comp,nv3550,duff long arms,3.5" lift,family cage,protofab rear bumper,twin sticked, and 35KM2'sG.D.I.
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chuzie Offline
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#3
07-28-2008, 10:37 PM
the original c4 pan bolt hole size is 5/16-18
'77 351w- Explorer EFI, 4R70W, 4-link, lockers, 4.56, 35" MT/Rs with a severe rock addiction.Confusedmokin:
Roads? Where we're going, we don't need roads.

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