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03-02-2010, 08:32 PM
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#1 | | Supreme Member
Join Date: Aug 2006 Location: Central NJ
Posts: 11,260
Car: 86 Trans Am, 92 Firebird Engine: 408 sbc, 3.1L of raw power Transmission: TKO600, T5 Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion | welding to the axle tube when you weld to the axle tube, does the tube warp much? is this something to be overly concerned about when adding/moving brackets and mounts?
and does anybody know how think a stock axle tube is? 1/8"? 3/16"? | | |
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03-02-2010, 08:44 PM
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#2 | | Senior Member
Join Date: May 2006 Location: Elk City OK
Posts: 559
Car: 92 25th anv z28 Engine: 346 TC78 Turbo Transmission: 4L80E Axle/Gears: 3.25 9"Nodular, Strange axles | Re: welding to the axle tube Well I just got done welding my brackets to a 9". I really don't think you'll warp it. Pretty thick and shouldn't get hot enough to warp. If I could guess I'd say stock housing is 3/16ths. Maybe give it time between welds? Heck people put back brace's on 9" and don't warp them. |
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03-02-2010, 09:01 PM
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#3 | | Supreme Member
Join Date: Jan 2002 Location: Orland Park, IL
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Car: 1984 Z28 Engine: SLOW carbed ls Transmission: TH400 with brake, 8" PTC converter Axle/Gears: moser 9" 4.11 | Re: welding to the axle tube most back braces on 9" do end up moving them unless they're in a jig FYI.
I usually run a small inch long bead on axle tubes when I am welding them up and go from side to side when welding tabs, etc on there.
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03-03-2010, 02:58 PM
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#4 | | Supreme Member
Join Date: Jun 2001 Location: DC Metro Area
Posts: 6,821
Car: 87TA 87Formula 12SHO 04CumminsRam | Re: welding to the axle tube they pretty much move when you weld anything to them, most people don't have an accurate way of measuring it to really tell. That's the reason why aftermarket housings have all the brackets and braces welded before the ends are added, and then the ends are welded jigged up to be accurately aligned with the bearing locations in the center housing. |
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03-03-2010, 03:00 PM
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#5 | | Supreme Member
Join Date: Jun 2001 Location: DC Metro Area
Posts: 6,821
Car: 87TA 87Formula 12SHO 04CumminsRam | Re: welding to the axle tube Oh, and if done _correctly_ after adding the ends, then they are jigged up again, measurements are taken to determine how far from properly aligned the ends are, then the axle tubes are heated to cherry red on their "long" side which causes them to shrink when they cool till they are straight. |
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03-03-2010, 08:06 PM
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#6 | | Junior Member
Join Date: Sep 2009
Posts: 26
Car: 85 TA | Re: welding to the axle tube We straightened housings with a torch in suspension class at college many years ago.
You can clamp some square tube or equivelent to the ends of the tubes and take some measurements between the two out at the ends. The longer the better.
Measure several times between welds to get an idea of how much warpage is going on. |
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03-03-2010, 08:13 PM
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#7 | | Supreme Member
Join Date: Aug 2006 Location: Central NJ
Posts: 11,260
Car: 86 Trans Am, 92 Firebird Engine: 408 sbc, 3.1L of raw power Transmission: TKO600, T5 Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion | Re: welding to the axle tube im trying to accomplish my project with as little weld onthe axle as i can, probably just going to end up with a bead across the top around where the spring perch was. The rest should be on the lca mount and shock mount
__________________ "i thought the plan was fool proof?"
"fool proof, yes. idiot proof, no." |
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05-03-2010, 04:01 PM
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#8 | | Supreme Member
Join Date: Jun 2001 Location: DC Metro Area
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Car: 87TA 87Formula 12SHO 04CumminsRam | Re: welding to the axle tube Quote:
Originally Posted by racer7x We straightened housings with a torch in suspension class at college many years ago.
You can clamp some square tube or equivelent to the ends of the tubes and take some measurements between the two out at the ends. The longer the better.
Measure several times between welds to get an idea of how much warpage is going on. | how well that works would depend how well the end of the tube is machined and welded. I could see a situation where end flange is not machined well and not lined up with the bearing but still seats and lines up the bearing fine, since the flange only retains it, it seats in a tapered seat, where this wouldn't work at all, or if you did it the bearing would end up not lined up even if the flange was. |
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05-04-2010, 01:51 PM
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#9 | | Senior Member
Join Date: Jun 2007 Location: arlington, tx
Posts: 379
Car: 90 z28 Engine: 355 with hsr Transmission: t56 Axle/Gears: 3.73 posi | Re: welding to the axle tube it should flake off stuff on the inside, so open the cover and clean it out before trying to use the rear end again.
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05-04-2010, 01:51 PM
| | ThirdGen 1992 Camaro
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