Stripped subframe mounting hole
#1
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Stripped subframe mounting hole
One of the holes that my front subframe mounts to was stripped out when I got the shell. I haven't really felt like dealing with it up until now, since I figured there would be a lot of work until it was done anyway, so I could put it off. But now I feel is the time to finally address this.
The threads inside are completely screwed. I figure that I can make a small hole in the frame rail (don't like that) and stick an M12x1.25 nut in there, and then bolt it in by holding the nut and threading in the bolt at the same time. Eventually, I'd have the nut welded onto the frame rail and have the hole patched up.
I've also found some sort of thread insert kind of thing, but I have my doubts as to whether or not it can actually hold the subframe.
Are there any other options that I can consider?
In case it matters, it's the rearmost bolt on the passenger side.
The threads inside are completely screwed. I figure that I can make a small hole in the frame rail (don't like that) and stick an M12x1.25 nut in there, and then bolt it in by holding the nut and threading in the bolt at the same time. Eventually, I'd have the nut welded onto the frame rail and have the hole patched up.
I've also found some sort of thread insert kind of thing, but I have my doubts as to whether or not it can actually hold the subframe.
Are there any other options that I can consider?
In case it matters, it's the rearmost bolt on the passenger side.
#6
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Don't believe any of these guys Buy a Helicoil kit. This will permanently repair the hole and still allow use of the proper bolts while being just as strong as before the damage. My exhaust manifold has a few of them in there Local NAPA or machine shops should carry them. You'll need to know the size and thread pitch of the bolt so you can buy the proper kit.
How they work:
http://www.roadstarmagazine.com/modu...rticle&sid=233
How they work:
http://www.roadstarmagazine.com/modu...rticle&sid=233
#7
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Originally Posted by DamonB
Don't believe any of these guys Buy a Helicoil kit. This will permanently repair the hole and still allow use of the proper bolts while being just as strong as before the damage. My exhaust manifold has a few of them in there Local NAPA or machine shops should carry them. You'll need to know the size and thread pitch of the bolt so you can buy the proper kit.
How they work:
http://www.roadstarmagazine.com/modu...rticle&sid=233
How they work:
http://www.roadstarmagazine.com/modu...rticle&sid=233
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#10
Do it right, do it once
iTrader: (30)
Originally Posted by chinaman
Why don't you try re-tapping it with a bigger tap and use a different size bolt.
DO NOT start cutting holes in the frame rail and put a bolt in there, you'll end up with a big mess.
#11
Do it right, do it once
iTrader: (30)
Originally Posted by spooledUP7
This is a solution, but hardly permanent. The helicoil may loosen, break, or just fall out. I would go with a larger bolt.
Helicoils are a good solution.
#12
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http://www.emhart.com/products/helicoil.html
"Heli-Coil® inserts are precision formed screw thread coils of stainless steel wire ...Typical Applications would include: Automotive,Communication, Aerospace, Military and the Defense industries
Heli-Coil is the approved Screw-Lock Screw Thread Insert source for Boeing Aircraft per specification
BACI12AE rev B"
If Boeing doesn't mind them holding their big *** planes together I'm sure they'll work just fine on a 2800 pound car.
"Heli-Coil® inserts are precision formed screw thread coils of stainless steel wire ...Typical Applications would include: Automotive,Communication, Aerospace, Military and the Defense industries
Heli-Coil is the approved Screw-Lock Screw Thread Insert source for Boeing Aircraft per specification
BACI12AE rev B"
If Boeing doesn't mind them holding their big *** planes together I'm sure they'll work just fine on a 2800 pound car.