welding exhaust manifold!!!!!!!

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andy - 27 Jun 2005 18:15 GMT

HIYA,

ive got a manifold off a turbo engine that has a crack about half way
round it, a mate said i could just mig it up, but im not sure,

whats the correct line on this, can i weld it or is it a specialist
job.

many thanks

andy

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LEE ARGYLE - 27 Jun 2005 18:37 GMT

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

Lee

> HIYA,
>
[quoted text clipped - 12 lines]
> ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
> ----------------------------------------------------------

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Austin Shackles - 27 Jun 2005 19:16 GMT

>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.

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.

Signature

Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".

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Steve Taylor - 27 Jun 2005 21:43 GMT

> 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

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Tom Woods - 28 Jun 2005 20:38 GMT

>HIYA,
>
> ive got a manifold off a turbo engine that has a crack about half way
>round it, a mate said i could just mig it up, but im not sure,

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.

>whats the correct line on this, can i weld it or is it a specialist
>job.

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

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Austin Shackles - 28 Jun 2005 21:28 GMT

>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.

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

Signature

Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".

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Tom Woods - 28 Jun 2005 21:49 GMT

>>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.
>
>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!

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Austin Shackles - 29 Jun 2005 10:02 GMT

>>>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
[quoted text clipped - 5 lines]
>I'd been tempted to try it too until i was told this! Nice to hear
>that its actually correct!

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

Signature

Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".

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Gaza - 29 Jun 2005 19:23 GMT

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

> HIYA,
>
[quoted text clipped - 12 lines]
> ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
> ----------------------------------------------------------

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