Cast iron turbo manifold. Weld it.
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Junior Member
Joined: Jun 2001
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From: San Diego, CA, USA
Cast iron turbo manifold. Weld it.
I have a hairline crack in my Rev Hard manifold. Can I get it welded? If so what is the best way? Would it be better just get a new manifold?
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Joined: Nov 2003
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From: Lemont, IL, USA
Re: Cast iron turbo manifold. Weld it. (gtcali)
The problem with welding cast iron is that it cracks if not uniformly heated/cooled.
1. Prepare weld (drill past the ends of the crack with 1/8" bit, bevel/gouge crack, clean).
2. Preheat to at least 1000* F.
3. Weld.
4. Postheat.
1. Prepare weld (drill past the ends of the crack with 1/8" bit, bevel/gouge crack, clean).
2. Preheat to at least 1000* F.
3. Weld.
4. Postheat.
Junior Member
Joined: May 2001
Posts: 444
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From: Hamilton, Ontario, Canada
Re: Cast iron turbo manifold. Weld it. (gtcali)
yes you can weld cast iron. you'll have to do the steps described above, and also use a high nickel rod. stainless rods work good too on cast 
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