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Old Dec 11, 2006 | 09:40 AM
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Default Question About Helicoil

Would you guys recommend helicoil for a stripped thread for a m6 transmission crossmember? I was torquing the bolts that hold the transmission crossmember to the floorboard and I stripped the thread.

Last edited by XpEdItIoUs; Dec 16, 2008 at 05:32 PM.
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Old Dec 11, 2006 | 09:53 AM
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If you can snip the tab off of the helicoil, it'd probably work fine.

Me, I'd probably just tap it bigger and use a slightly bigger bolt.
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Old Dec 11, 2006 | 11:13 AM
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Old Dec 11, 2006 | 08:31 PM
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Ok I guess I will put a bigger bolt.
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Old Dec 12, 2006 | 01:11 AM
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helicoils work really well and are very strong
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Old Dec 12, 2006 | 07:01 PM
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Helicoils only work if the bolt is fully threaded with the helicoil. I would consider a slimsert or a keensert. They are both much stronger and more durable.
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Old Dec 13, 2006 | 08:21 PM
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I used helicoil and it worked great.
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Old Nov 8, 2007 | 01:13 PM
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What setting did you have on the torque wrench? The factory manual states 66 lb ft, and I was able to torque 3 bolts but the 4th just didn't feel right so I just let off vs. stripping it. Also, since the metal the bolt is threading into is not too deep, how did you know what length of helicoil to use? Thx!!!
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Old Nov 24, 2007 | 07:26 PM
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Default helicoil

Timeserts are much stronger than helicoil. they are solid instead of wire
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Old Dec 14, 2007 | 07:23 PM
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Hey you are lucky you didnt break the damn bolt like i did when i was tourqeing my rear crossmember on my camaro.... i looked at neutnmeters(whatever it is) and not footpounds... and broke it.... not fun when ur in auto class and have to bum a ride to go pick it up at the chevy dealer... you can sign up for Mitchell1 on demand and they give you all the specs... OnDemand5.com
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Old Dec 16, 2008 | 04:02 PM
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I may be dropping my tranny in the near future and was wondering what torque setting snapped your trans support bolts (4 cross member bolts)? I torqued mine to 66 ft lbs (at least three of them). I used the factory manual and confirmed via this torque setting sheet - http://www.texasfbody.org/TorqueSpecs/ However, I think installuniversity states 43 ft lbs for the bolts - I just don't want to strip nor have them undertorqued. Thanks!
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Old Dec 16, 2008 | 04:04 PM
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I think it gave up on 60 ftlbs.
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Old Dec 16, 2008 | 04:24 PM
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Is your helicoil still holding up? Did you install a short helicoil since there's not much female thread? I'm just getting a plan in case of bolt failure - Thx!
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Old Dec 16, 2008 | 05:31 PM
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Originally Posted by MrEddie
Is your helicoil still holding up? Did you install a short helicoil since there's not much female thread? I'm just getting a plan in case of bolt failure - Thx!
Its holding fine even with the th400 trans that took place of my t56.
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Old Dec 16, 2008 | 05:32 PM
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I don't exactly recall what size i used but i think it was a short coil.
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Old Dec 17, 2008 | 09:28 PM
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you should have no problems with helicoil. im an engineer at an aerospace manufacturer and every tapped hole besides pipe or port uses helicoils. we go through hundreds a day
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Old Dec 18, 2008 | 05:46 PM
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Originally Posted by FlyRydes
Timeserts are much stronger than helicoil. they are solid instead of wire
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I agree Timeserts are the best way to go for that type of problem.

I have used them many times with great luck.
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