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Welding torque arm mount to 8.8 housing questions

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Old 09-07-2016, 06:31 PM   #1
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Default Welding torque arm mount to 8.8 housing questions

I know this has been covered many times.... I'm currently having trouble with my 8.8 torque arm mount. This is the popular mount used by many. I've seen several times the proper weld technique is to preheat the housing then weld with a nickel rod then allow the housing to cool slowly to prevent cracking of the weld. I just can't find someone to do it.

I found a local guy that does alot of 8.8s. He builds them for Jeeps, mustangs and such. I contacted him and told him what I had going on and he said he just mig welds all that he does and has never had a problem. I've seen pics of work he has done, swap bearing ends over to 9" style, weld bracing on the 8.8s for Mustangs with anti roll bars and so on.

Would the mig welding work?
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Old 09-07-2016, 10:50 PM   #2
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I don't want to say just mig it but.... Just mig it.
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Old 09-08-2016, 09:07 PM   #3
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Just a follow up on this. After talking to the guy more, he said he uses a mig welder with stainless wire which is also something I had read that works well. So I guess I'll be taking the housing to him to weld up for me.
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Old 11-22-2016, 09:11 PM   #4
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Well I hate to bump this but I'm going to. I still haven't found anyone locally to weld the torque arm mount on for me. I'm very tempted to do it myself. A friend of mine is a great welder but has no experience with cast like the 8.8 housing.

The guy that was supposed to do it for me said he uses a mig with stainless wire. Has anybody welded their own housing and torque arm mount using a mig and stainless wire?
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Old 11-23-2016, 06:38 PM   #5
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I've welded on cast housings using 6011 stick rod. I Preheat the area and I haven't had any welds crack as they cool. I recently welded a truss kit on a rear from a Jeep using 6011 rod, which worked out just fine on the cast housing. Bob

Last edited by [email protected]; 11-23-2016 at 06:57 PM. Reason: I used 6011 rod
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Old 11-23-2016, 08:09 PM   #6
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I have used 7018 rod and mig on cast just fine with out failure. Just make sure its clean and pre heat it the best you can.

The 8.8 is cast steel and not cast iron right?

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Old 11-23-2016, 08:35 PM   #7
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With the proper wire you can use mig. Obviously this guy does it a lot, why are you questioning his skills? There are all kinds of stainless mig wires I'm sure he knows this. If you don't trust him simply ask him which wire he is using and check it online.
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Old 11-25-2016, 09:25 PM   #8
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Quote:
Originally Posted by onebadbowtie86 View Post
....The 8.8 is cast steel and not cast iron right?
The 8.8 housing is cast from nodular or ductile iron. I had a sample tested at our foundry.
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Old 11-25-2016, 09:27 PM   #9
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As noted, cleaning + pre-heating & post-heating will yield the best results.
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