Torque Converter Stud Broke off
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Tuned
Joined: Feb 2007
Posts: 414
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From: Kingman, Ks
Torque Converter Stud Broke off
On my 1995 F-150 with the 302 and 4r70w tranny, I was in the process of removing the engine to put some gaskets in it and when I went to take the nuts off the studs on the torque converter one of them wouldn't ever loosen up. It would turn but it would turn very hard. Upon closer inspection i noticed the the stud wasn't attached to the converter anymore. I can't really tell if I broke it loose or if it was already broken.
So my question is what should i do about it? Just leave it in the flywheel for balance purposes and hope that the other three will hold it, or is there someway to reattach it. I can't really tell how they are attached, they are not welded on, it almost looks like they were glued on with some sort of molten metal or something. I noticed while helping a friend put in a transmission in a chevy that it only used three studs anyway.
Any insight would be well appreciated. Thanks.
So my question is what should i do about it? Just leave it in the flywheel for balance purposes and hope that the other three will hold it, or is there someway to reattach it. I can't really tell how they are attached, they are not welded on, it almost looks like they were glued on with some sort of molten metal or something. I noticed while helping a friend put in a transmission in a chevy that it only used three studs anyway.
Any insight would be well appreciated. Thanks.
Senior User
Joined: Jan 2008
Posts: 373
Likes: 1
From: Hudson Valley, NY
by your description it sounds like they were brazed on, kinda a high temp solder (I'm not sure as I have only worked on my 4sp / 302 combo) .. but you could try throwing a flame at it and see if melts .. may take a bit more than a regular propane torch, but you don't wanna get it red hot or even close as it may warp the fly wheel ..
also, think about calling a machine shop .. they may have better insight as to how to fix you problem ..
also, think about calling a machine shop .. they may have better insight as to how to fix you problem ..
Senior User
Joined: Sep 2009
Posts: 141
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From: Glade Hill, VA 24092
would not suggest running it with only 3 bolts. The chevy works with 3 because it is designed to use 3, they bolts are spaced accordingly. I would suspect that only only 3 bolts on a ford would result in a cracked flexplate, possibly worse. Advance auto list a new converter for about $100, may be something to look into.
Cargo Master
Joined: Mar 2007
Posts: 2,935
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From: Arcadia, Fla
I had one pop off before, after pulling the engine(tranny/TC still in truck), I just put the offending stud back in place on the TC and zaped it with a MIG welder. Took care of it and had no issues since. Just make sure you ground the MIG DIRECTLY on the TC or bad things will happen!
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Tuned
Joined: Feb 2007
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From: Kingman, Ks
Thanks for the replys. I didn't suspect it would be smart to run with three but just thought i'd ask.
I had thought about hitting it with a MIG welder but thought that it might throw off the balance of things. Do you feel any vibrations?
Anybody else have thoughts about using a MIG welder?
I had thought about hitting it with a MIG welder but thought that it might throw off the balance of things. Do you feel any vibrations?
Anybody else have thoughts about using a MIG welder?
Cargo Master
Joined: Mar 2007
Posts: 2,935
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From: Arcadia, Fla
No vibs at all, I just put enough on to hold the stud in place. I did attach the MIG ground to a stud close to the area and did quick zaps and alow area to cool off for no warpage and over heating to occur.
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FTE Legend
Joined: Mar 2009
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From: North Bay Ont Canada
I am a Ford tranmission tech, put a new or reman torque in the truck so you will not have any problem's down the road,Gigger
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Thread Starter
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Tuned
Joined: Feb 2007
Posts: 414
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From: Kingman, Ks
I had thought about a new or re manufactured one but that is at least another $150. I know that it would be best to do that but if I can get away with welding I might try it.
Anybody else got an opinion.
Anybody else got an opinion.
Postmaster
Joined: Aug 2005
Posts: 4,728
Likes: 8
From: Cleveland, TN
If it were me, I think I would go with a new or reconditioned converter, if it could be welded quick enough to not burn the oil inside it might work.. But myself, I would be worried about cooking the oil and making chunks of crud that might stop up a passage somewhere, or warping the converter housing enough to cause it to fly apart out on the road somewhere...
But I have been accused of going overboard before...... But it is something to think about..
But I have been accused of going overboard before...... But it is something to think about..
Postmaster
Joined: Aug 2005
Posts: 4,728
Likes: 8
From: Cleveland, TN
Yep GIGGER you're right!!!