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Location:
NSW - Blue Mountains
Registered:
June 2004
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Crack in exhaust, can i weld it?
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Sat, 08 January 2005 16:33
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I got a crack in my exhaust and i was wondering if it can be welded up. the reason i only want to weld it back up is im very short on money right now (im a bum thats looking for a job  ) and im looking for the cheapest way outa it for now.
and its too fuckin loud
any cheap tips welcomed
Cheers
Chris
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Location:
Rocklea qld
Registered:
February 2003
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Re: Crack in exhaust, can i weld it?
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Sat, 08 January 2005 22:20
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if its just a standard mild steel exhaust u can weld it easily...if its in a manifold then you cannot weld it. or you can just try some muffler puty or even cheaper i used bog once and it lasted about 4 months.
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: Crack in exhaust, can i weld it?
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Sat, 08 January 2005 23:30
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Yes you can weld either type of exhaust manifold. Headers will generally be mild steel, while cast iron manifolds will need the following procedure:
1: drill a hole at each end of the crack to stop the crack from "running"
2: V out the crack to allow better weld penetration
3: heat the manifold up till it just starts to change colour, it will cool slightly before you start to weld it but will be fine.
4:Weld the crack up, ensuring a good penetrating weld is produced
5: Allow to slow cool - I've always let it cool itself in air, though a good friend suggested burying it in sand would allow it to cool even slower, which has merits for the application.
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I supported Toymods
Location:
melbourne
Registered:
June 2002
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Re: Crack in exhaust, can i weld it?
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Sun, 09 January 2005 07:33
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use the right rods, i believe "low hydrogen" are the ones you are after, or just ask for some rods suitable for cast iron.
if you have headers, just use mild steel arc rods or mig.
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Location:
NSW - Blue Mountains
Registered:
June 2004
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Re: Crack in exhaust, can i weld it?
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Sun, 09 January 2005 13:27
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its not in the manifold, its up closer to the rear muffler (prolly should have said that before)
ahh fuck it ill do it the cheap way, muffler putty here we come
unless someone has a cheap cat back system and by cheap i mean free
Cheers
Chris
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Crack in exhaust, can i weld it?
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Mon, 10 January 2005 04:30
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Go to BigW or KMart.
Buy some muffler tape.
Costs about $10 I think.
Just wrap the exhaust in it.
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: Crack in exhaust, can i weld it?
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Mon, 10 January 2005 08:44
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i know the solution has been found for the exhaust fix.
but i just wanted to say that any cast stuff i get brazed, i did a lot of research on the net when i was making my 1st turbo manifold, and it all pointed to brazing as the best option for joining or repairing cast products.
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