welding exhaust manifold!!!!!!!

You can mig the manifold - but it's not recommended. Your supposed to use special ARC rods that are designed for use with cast metals - not cheap but worth the expense.

Regards

On or around Mon, 27 Jun 2005 17:37:40 +0000 (UTC), "LEE ARGYLE" enlightened us thusly:

assuming it's cast... mig with normal wire and gas on cast don't work.

you should be able to bronze weld it with gas, mind, I think, although it might not be strong enough.

other than that, like the man said, special cast-welding rods and the know-how to use 'em.

Pure nickel rods can be used on Cast iron. It is a stick (MMA) process, and you should heat the job up very hot (>>300 C) while doing it. Once finished, bury it in hot dry sand and let it cool.

Steve

I think that you could mig it, but i'm told that the weld will probably just fall off as soon as it gets warm or you knock it too hard.

I think it's a take it to a professional job, and if they dont do it properly expect it to crack again.

On or around Tue, 28 Jun 2005 20:48:47 +0100, Tom Woods enlightened us thusly:

That's what happened to a part from my lathe, when I tried mig on it just on the offchance that it'd work

I'd been tempted to try it too until i was told this! Nice to hear that its actually correct!

On or around Tue, 28 Jun 2005 21:58:43 +0100, Tom Woods enlightened us thusly:

Must try bronze on it - ISTR that this is possible. it's also a good deal less hot than steel/iron welding.

Depending on where you are (and if you're the Andy i think you are, you're not far - i'm in Sheffield) i could have a go at TIG welding it for you. i have had some sucsess with cast in the past using stainless rod as this removes some of the high carbon boundry layer that makes them re crack. No guarentees but worth a go?

cheers

Gary

andy wrote: