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CLG
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Perth, Western Australia
Registered:
December 2002
Re: Crack in exhaust, can i weld it? Sat, 08 January 2005 23:30 Go to previous messageGo to previous message
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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SubjectPosterDate
Read Message   Crack in exhaust, can i weld it? CoronaCSat, 08 January 2005 16:33
Read Message   Re: Crack in exhaust, can i weld it? people100Sat, 08 January 2005 22:20
Read Message   Re: Crack in exhaust, can i weld it?  CLGSat, 08 January 2005 23:30
Read Message   Re: Crack in exhaust, can i weld it? shinybluesteelSun, 09 January 2005 07:33
Read Message   Re: Crack in exhaust, can i weld it? CoronaCSun, 09 January 2005 13:27
Read Message   Re: Crack in exhaust, can i weld it? CrUZsidaMon, 10 January 2005 04:30
Read Message   Re: Crack in exhaust, can i weld it? feral4mr2Mon, 10 January 2005 08:44
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