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Rear end housing welding #1207207 03/31/12 10:31 PM 03/31/12 10:31 PM
Joined: Nov 2006 Posts: 1,458 oklahoma F forphorty OP pro stock
forphorty OP pro stock F Joined: Nov 2006 Posts: 1,458 oklahoma	I have an 8.75 housing i am narrowing. I have a great deal of experience welding sheetmetal(I work in a body shop). 1/4 inch axle tubes,not so much. Looking for some opinions on if a Miller 175 mig would be acceptable for welding the ends on. I believe the machine has .023 wire in it at the moment. Since it is the shops welder, I probably wouldn't want to change the wire size unless i have to. Is preheating of any benefit in this instance?

Re: Rear end housing welding [Re: forphorty] #1207208 03/31/12 11:38 PM 03/31/12 11:38 PM
Joined: Dec 2003 Posts: 22,696 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,696 Bitopia	Not sure why you said 1/4" axle tubes, I thought most OEM tubes are 3/16", the ends however are thicker, and a 220V 175 amp quality machine would IMO be the min needed for quality welds, I would definitely use something thicker then .023 wire, and a mix gas of Ar/CO2, and some preheating would help, especially since it would unlikely add to any warpage issues with just a housing end weld. Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: Rear end housing welding [Re: forphorty] #1207209 03/31/12 11:50 PM 03/31/12 11:50 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I use a 185 (220v) mig to do that all the time... I did the 9" thats in my Rampage plus I will be doing a 9" next week, both have thicker tubes than that... I use 75/25 on the mig EDIT I would get a spool of wire .030 and tip to match Last edited by MR_P_BODY; 03/31/12 11:52 PM.

Re: Rear end housing welding [Re: MR_P_BODY] #1207210 04/01/12 09:03 AM 04/01/12 09:03 AM
Joined: Oct 2005 Posts: 976 ontario canada mac56 super stock
mac56 super stock Joined: Oct 2005 Posts: 976 ontario canada	I do 3-4 9 inch a year with a similar size welder and 0.23 wire. I like the .023 on the small welder because you can get lots of heat without too much wire. Just chamfer back the edges and go nice and slow. I only do maybe 1 1/2 stitches and go back and forth from end to end so you don't create too much heat on one end because it will pull. The thing I didn't hear you mention was do you have a jig to do this? I would not do this without one. In all the housing I have done I have never seen one that was straight enough to just weld new ends on or even cut a piece out and line the ends up. I have no doubt many will say they have done it without.

Re: Rear end housing welding [Re: MR_P_BODY] #1207211 04/01/12 09:29 AM 04/01/12 09:29 AM
Joined: Mar 2006 Posts: 9,835 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,835 MI, usa	I cut the ends off my 8 3/4 25 years ago. Put the ends in the lathe and squared them. Squared the cuts on the housing with a square. Beveled them and welded them on. I still own the car ,street and 11.0 passes never a problem. Since then I have access to a line-up bar and pucks. The ones I've done with it appear to line up pretty close before welding with the bar installed. Doug

Re: Rear end housing welding [Re: mac56] #1207212 04/01/12 09:32 AM 04/01/12 09:32 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: I do 3-4 9 inch a year with a similar size welder and 0.23 wire. I like the .023 on the small welder because you can get lots of heat without too much wire. Just chamfer back the edges and go nice and slow. I only do maybe 1 1/2 stitches and go back and forth from end to end so you don't create too much heat on one end because it will pull. The thing I didn't hear you mention was do you have a jig to do this? I would not do this without one. In all the housing I have done I have never seen one that was straight enough to just weld new ends on or even cut a piece out and line the ends up. I have no doubt many will say they have done it without. Yes I do have a jig and yes I bevel the end where the bearing end welds on EDIT This is the one that went into the Rampage... I did add a gusset on the ladder bar bracket after this pic(where the lateral link mounts to take flex out of it 7145851-DSC00042.JPG (93 downloads) Last edited by MR_P_BODY; 04/01/12 09:41 AM.

Re: Rear end housing welding [Re: MR_P_BODY] #1207213 04/01/12 09:37 AM 04/01/12 09:37 AM
Joined: Jan 2004 Posts: 507 Illinois Hurst390 mopar
Hurst390 mopar Joined: Jan 2004 Posts: 507 Illinois	A jig is necessary but does not eliminate problems....If you cut your tube end off and re-weld just the end back on you will not have as much "pull" when welding..now if you cut the tub upo at the center housing welding will pull that tube way more and then a press is required to straighten the housing..jig'd or not...It doesn't look as good but I just shorten my housing out at the axle tube end to eliminate needing a press...but it doesn't look as good because you end up with the end offset from the axle tube... 80 AMX Barry Allen 420 AMC Iron Heads Jerico 4-speed Advanced clutch 2950# street legal 5.97 115.73 Coles county dragway 10/28/07 9.42 142.96 best in 08(6.00 115.8 1/8) 5.97 116.2 in 09 http://www.youtube.com/watch?v=AXSr201-tmA

Re: Rear end housing welding [Re: Hurst390] #1207214 04/01/12 03:03 PM 04/01/12 03:03 PM
Joined: Nov 2006 Posts: 1,458 oklahoma F forphorty OP pro stock
forphorty OP pro stock F Joined: Nov 2006 Posts: 1,458 oklahoma	Thanks for the info, guys. I have the alignment bar and pucks.

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