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#1 |
Registered User
Join Date: Apr 2003
Location: NB
Posts: 3,367
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Welding exhaust pipe?
Any one know of a good site to read up on welding exhaust?
I want to customize a exhaust but have never welded pipe! What settings do you set the mig to? Or should I use torches? Any info? Help! ![]()
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1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD Last edited by 67chevemall; 07-09-2010 at 02:29 PM. |
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#2 |
Registered User
Join Date: Nov 2003
Location: kc
Posts: 229
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took mine to car x , they dont know how to weld either. im like you i should learn to weld again.
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71 C10 SWB BLACK AND WHITE 350 CRATE TH350 ENJOY LIFE |
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#3 |
Registered User
Join Date: Oct 2002
Location: Des Moines WA. (Kent, area)
Posts: 668
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just make shure that the pipe dosnt have a coating on it. its a pain to weld (unless you grind it off
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70 chev c10 swb fleet 72 grill, sb 400, 2/4 drop. 68 chev c10 swb fleet Early classic 4/6 drop with 4wheel disc brakes 9"rear 67-8 buckets tilt and A/C Classic GM Truck Club of Washington . |
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#4 |
Keep On Truckin'
Join Date: Mar 2003
Location: Buda, Texas
Posts: 1,354
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Clean good and mig weld. I wouldn't use torches if you have a mig welder. Plus, if you have to do any welding with the pipe installed, which you likely will, torches are way too dangerous. All welder models are different so it's impossible to state a setting. Practice on new scrap pipe so you can sneak up on the proper adjustment for heat and wire feed.
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Just Passin' Thru Some projects are like herding cats; others are like putting out fires; this one was like herding cats on fire..... |
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#5 |
Registered User
Join Date: May 2000
Location: Victoria, BC, Canada
Posts: 2,410
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If possible, set up some sort of supporting jig so you can keep the two pieces in line and can turn them. Your best (and easiest) welds come from the "flat" position. If you are welding thick walled pipe you could bevel the mating edges slightly to get good penetration. Align the two pieces about 1/32" apart and tack them together with 3 or 4 evenly spaced tacks. If you want to run continuous beads between the tacks you could have an assistant slowly turn the pieces while you weld. I would suggest filling by tacking evenly all around if by yourself. This will keep the heat down and prevent any blowthru but you still need enough heat to get good weld penetration. I would suggest running your mig between 70 and 90 amps for exhaust pipe.
If you have any left over scrap pieces you might want to practice joining them, recut, join again etc. until you feel comfortable with your technique, settings, position etc. LOL, I can remember repairing old exhaust pipe with a torch and a coat hanger for filler metal. Lots of mini-explosions from the rust and coat hanger material is made of the most impure concoction of metals you could imagine. ![]()
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1970 GMC 1500 Custom Original 350/TH350 Victoria, BC, Canada You can wish in one hand and crap in the other. See which one gets filled first. |
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#6 |
Saving 1 truck at a time!
Join Date: Aug 2001
Location: Kent, WA
Posts: 6,465
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It's really easy to do once you have removed the bed and cab! A truick lift makes it much easier too. I have done mine by lots of cutting, tacking then removing the pipes to weld them. They will move all over if the ends are not cut pefectly square. They can still pull when welded. If you are patient you can do a decent job...it just takes time.
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#7 |
Wiseass secured himself a BAN
Join Date: Nov 2000
Location: MOON!!!
Posts: 2,282
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Bolt everything up and tack it all together. Then remove and put a continues weld all the way around. Too bad you don't have a TIG welder. You could make some really pretty welds around the joint. Take your time.
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#8 |
Registered User
Join Date: Mar 2003
Location: Motor City
Posts: 540
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A guy here at work said he used to heat up galvanized fence post and bend them in between two rims. Im not sure if this works, but sounds feasible.
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72 GMC Camper Special 2500. currently has 350/350/14 bolt. 383 and 400 tranny is in the works. |
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#9 |
Just Don't Stop!
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Location: Dallas
Posts: 1,239
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if you use galvanized definatly don't breathe it!
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1968 C10 build in process TT LSA/6L90e/9" |
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#10 |
Registered User
Join Date: Jan 2003
Location: Washington State
Posts: 8,834
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Most of the shops in this area use a wire feed now....a few still use a torch...
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#11 |
Senior Member
Join Date: Dec 2000
Location: Colwich,Kansas
Posts: 713
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If all you have is a torch set up., DONT use coat hangers, junk metal as stated above. Use baler wire, soft and works good, specially on old exhaust,
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67 3/4 4x4 402,a/t,flat bed 98 GMC Sierra swb daily driver 87 burb parting out. 68 1/2 chevy, 350/350, 71 gmc frame, kid's beater 69 1ton 396-4sp, dump 69 swb stepside 396/400th current frameup 67 swb 454/400th rebuilding now, oldest boy just rolled it 99,HD, Road King Classic Colwich Ks |
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#12 |
Registered User
Join Date: Apr 2003
Location: NB
Posts: 3,367
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Thanks guys
I think I'll let speedy muffer do it As it is already on the truck! With clamps Get them to weld the clamps up tight
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1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD |
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#13 |
Registered User
Join Date: Nov 2011
Location: Kirkland, WA
Posts: 343
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Re: Welding exhaust pipe?
Old thread I know, but Harbor Freight sells a 110 volt 90 amp wire feeder for $109.00. Perfect for exhaust, filling trim holes, patch panels, etc. Get the special wire cutters and splatter spray to keep the nozzle clean. Good little project welder.
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#14 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: Welding exhaust pipe?
I would much rather weld patch panels and fill holes with a gas mig and solid wire. Way less spaltter and cleanup grinding.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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#15 |
Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Re: Welding exhaust pipe?
Although it's been years since I've tried to do any of it, I was always a better welder with a torch than an arc, for stuff like light-gage pipe. I should hook up my welding tip someday and see if I still got it.
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