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Topic Review (Newest First)
09-17-2012 06:49 AM
welding stainless

some alloys of stainless tends to grow buggers on the underside of the weld bead, unless you purge with a Y hose and more argon or use HVAC foil tape to create a pocket under the weld area to keep oxygen from air contaminating the welds.
09-16-2012 09:52 PM
bigdog7373 Looks really nice. Very clean car
09-16-2012 09:33 PM
roger1 I finally got my stainless ends put on my tailpipes yesterday.

Here's some photos:

After welding, smoothing and painting the welds:

Back on the car:

03-22-2012 01:05 PM
roger1 My pipes are aluminized steel. I just clean off about 1/2" of the aluminizing and weld.

You can weld stainless to mild steel with a mig and steel wire. You just have to paint the welded area to protect it from rusting. I use that ceramic type spray paint and have had good luck with it.

You only need a stainless welding rig for welding stainless to stainless.
03-22-2012 12:24 PM
Irelands child
Originally Posted by roger1
Are your pipes unpolished stainless? Or, are they aluminized steel? I can't tell in the picture.
Ceramic coated over aluminized steel. Like I said - don't have the equipment to weld SS (plus the wallet got real thin for a while - I retired about the time I was doing the exhaust)
03-22-2012 11:58 AM
roger1 Are your pipes unpolished stainless? Or, are they aluminized steel? I can't tell in the picture.
03-22-2012 11:21 AM
Irelands child The rear of my '31 with the '32 gas tank is low enough I just went with some Wally World SS tips for mine - but - I do like that idea of buying a 4 or so foot piece of polished SS tubing and making up a longer version. This for me would have to be a clamped arrangement as I just don't have the equipment to weld stainless with out a pretty large investment for two welds .

This is my 'cheepy' version:
03-22-2012 10:30 AM
bigdog7373 Yea as long as its just a single wall pipe it will look good.
03-22-2012 10:27 AM
Originally Posted by bigdog7373
I like how it looks now. Maybe mock up the stainless pipe first before cutting or welding anything? I wouldn't want to get to flashy with it.
Thanks and I agree.
However, if I keep them exactly the same length, I don't think that they will add much bling. Just cleaner.

I looked at the angle cut and rolled edge tips that are out there and I thought those would be too flashy. I want to keep the car looking vintage.

Here's the 2ft stainless pipe I bought that I will cut in half:

03-22-2012 09:47 AM
bigdog7373 I like how it looks now. Maybe mock up the stainless pipe first before cutting or welding anything? I wouldnt want to get to flashy with it.
03-21-2012 04:47 PM
probably 20 alone on the headers

i used 1968 390 headers and had to make dog legs for clutch linkages and bell housings etc none of you know what I ran into here duals over the axel were different all the way through. You just don't know I made the header adaptors from the headers to the mufflers all of it everything except the header flanges I didnt have to modify. I can see know most of you never had a real challenge yah all had the right stuff to begin with, eheheheheh. All made from 2 sections of straight pipe i made all the bends with a hack saw and gas welds. no tubing cutters or power hack saws no mig welders all the old way.. eheheheh
03-21-2012 04:34 PM
Irelands child I MIG welded up the exhaust on my '31. I have 7 welds on the pass side and 8 on the drivers plus one in the center of the 'H' pipe. That's 16. Had I gone over the rear axle, I would have added 3 more per side for a total of 22. There are no crinkled or crushed bends. Could I have done it with less - sure, if I had access to a mandrel bender. 117 - ??????
03-21-2012 02:55 PM
Originally Posted by rsfyj
my last Hot Rod a 1947 Ford coupe w 390 engine I made my dual exhausts with 116 separate gas welds and cuts to get everything to fit, Tedious but it all worked nice
I also cut the car in half right through the doors, roof and frame all around and shortened it 32 inches and then I gas welded the whole car back together doors, roof frame floors and this took longer than the exhaust work. I went through a lot of Oxygen and acetylene.. the good ole days,,never knew MIG welders were around couldnít afford one any way.. lots of you younger Hot rodders donít know what it was like years ago we didnít roll in cash and parts and chrome everything. My 1st dirt car the roll cage was made of Cow stanchions from a barn Fire,some of you guys have no idea????
03-21-2012 02:49 PM
Originally Posted by crussell85
I would almost have to see that exhaust to believe that you made that many necessary cuts and welds. Not calling you a liar or meaning any disrespect at all, just sayin
that's the way it was many bends and no room beneath the car, life is a ***** sometimes
03-20-2012 08:08 PM
Originally Posted by Irelands child
You can take the pipe sections to any muffler shop and they will "blow out" the pipe to fit over what you have and then either clamp or weld for a better connection
I believe a butt weld will be plenty strong. The hangers will be right in front of the butt weld so it only has to support the weight of 1 foot of pipe.

I really don't see why a butt weld wouldn't be as strong as the pipe itself anyway since I'll be removing the pipes so I can get a good weld all the way around the pipe.

I have V clamps at the rear of the mufflers so removing and re-installing them is a snap.
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