Cracked exhaust manifold....need advice

[Gunwriter]

Well....I found my exhaust leak....
I have about a 3 inch crack in my exhaust manifold, in the center section.

Looking for advice.

Should I try to get it welded or simply replace it.
If I replace it, should I replace just the center section or the whole thing?

Where should I look for a replacement manifold?

Thanks!

 

[zout]

Did ya think about putting this in the WANTED section of the classified ads here for FREE ?? Asking for a used good replacement ??

 

[Flyingvan911]

I say get a replacement. It is hard to reliably weld cast iron.

 

[Gunwriter]

Did ya think about putting this in the WANTED section of the classified ads here for FREE ?? Asking for a used good replacement ??

No, because I was looking for ADVICE on whether to try to weld it or replace it.
Thanks though for your suggestion.

 

[doghead]

Replace it.

I would bet Glen(91W350) would have one.

 

[Gunwriter]

Replace it.

I would bet Glen(91W350) would have one.

thanks for the advice.
I will check with Glen, I need to get some more tires off him too...

 

[Cycletek]

If you weld it use Nirod and v-grind the crack for good adhesion and penetration.....

 

[wreckerman893]

I am a fair welder and have welded cast iron manifolds, there is a lot of prep work and if you do it right you still have to peen it until it cools or it will crack.

Would I reccommend it if you can easily get a replacement? No.

It should be easy to get a multi-fuel manifold.

 

[MWMULES]

Replace it.

I would bet Glen(91W350) would have one.

Yep it happened at the right time , Glen got a couple used ones in the cans that have some good parts on them. Don't wait too long, you know as well as I do what happens out there. "He who hesitates has nothing"

 

[73m819]

Welding old cast iron exhaust manifolds is almost impossible to keep from recracking because the porous cast iron picks up the carbon from the exhaust, so when welding you get carbon pockets that do not weld, it can be done but is a BIG production, then still only a 50/50 chance of not cracking. You weld OLD cast iron exhaust manifolds ONLY if you can not find a replacement.

 

[Gunwriter]

Thanks to everyone for their replies~!

I GREATLY appreciate the input and education on welding cast iron manifolds.
Why I asked.

Thanks

 

[91W350]

I'll bet Glen has one you can take off at a very reasonable price, maybe two or three of them....

 

[deuceman51]

PM sent

 

[hndrsonj]

I'll bet Glen has one you can take off at a very reasonable price, maybe two or three of them....

I am guessing you mean two or three (DOZEN).