To weld or to buy exhaust manifold?
10-17-2012, 11:24 AM
#1
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To weld or to buy exhaust manifold?
My dad bought a stick welder for $25 on yard sale.
It should be OK to weld, it is steel manifold, not iron.
????
I'll try. Who did?
It should be OK to weld, it is steel manifold, not iron.
????
I'll try. Who did?
Last edited by Rockville; 10-17-2012 at 11:49 AM.
10-17-2012, 11:29 AM
#2
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Just buy a new one. They're cheap enough.
If you weld it with a 25 dollar arc machine I promise you'll be taking it back off in a couple months to swap on the one you bought.
If you weld it with a 25 dollar arc machine I promise you'll be taking it back off in a couple months to swap on the one you bought.
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10-18-2012, 02:01 AM
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you're new to welding I take it?
Read read and read some more. I'm a pretty good welder after years of trial and error, when I should have just researched.
O and practice on your friends stuff first
Read read and read some more. I'm a pretty good welder after years of trial and error, when I should have just researched.
O and practice on your friends stuff first
10-18-2012, 06:42 AM
#9
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I painted manifold by silver high temp paint, installed it, there are no leaks.
I spent 10 rods to make sure it will not crack anymore, at least not were I repaired it. So far so good.
I spent 10 rods to make sure it will not crack anymore, at least not were I repaired it. So far so good.
10-18-2012, 06:44 AM
#10
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Are you adding heavy duty front coil springs to handle the extra weight?
10-18-2012, 07:04 AM
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Even with a stick welder i can weld that with a quarter of a rod but you got to what you got to do and by the looks of it it looks like you had the amperage to high heres a simple stick weld bead i layed for my rear 4 link im building
10-18-2012, 07:23 AM
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10-18-2012, 07:42 AM
#13
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Well, I give you credit for the effort. lol It looks like you melted lead on there.
I have a mig and I have welded several exhausts. If the pipe itself is in good shape and the welds penetrated well then it will hold you over for a while. but if the pipe is corroded, porous, brittle and thin then it will only be temporary. If it were new pipe it would be a different story. In my experience it is the pipe that fails and the welds themselves are fine on used exhausts.
I have a Cherokee coming in a couple weeks that has a bad manifold and comes with a new one. I might investigate the old one just to see what it really looks like. Maybe I will through a weld on it and keep it for a spare or something. A new one is around $100 I believe.
I have a mig and I have welded several exhausts. If the pipe itself is in good shape and the welds penetrated well then it will hold you over for a while. but if the pipe is corroded, porous, brittle and thin then it will only be temporary. If it were new pipe it would be a different story. In my experience it is the pipe that fails and the welds themselves are fine on used exhausts.
I have a Cherokee coming in a couple weeks that has a bad manifold and comes with a new one. I might investigate the old one just to see what it really looks like. Maybe I will through a weld on it and keep it for a spare or something. A new one is around $100 I believe.
10-18-2012, 09:23 AM
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Year: 1999
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Engine: I6 4.0
The problem with the manifolds on these trucks is the motor moves to much and the the force has to go some were and it decides to go to the mani fold that cant move i have brown dog off road poly motor mounts and havent had an exhaust manifold crack since the motor cant move so much anymore
10-18-2012, 09:33 AM
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I'm glad someone brought up motor mounts. Seems as though most manifolds crack due to worn out motor and transmission mounts. Before you throw a manifold (either a new one or that old one with the fugly welds), check your mounts!