Exhaust manifold cracks

[Led]

Run it or replace it?

 

[Nagrom]

Get it fixed then run it

 

[Led]

Finding someone that will weld cast iron is difficult.

If the cracks are beyond acceptable I’d rather just buy an uncracked piece.

 

[Nagrom]

They all crack

 

[VB242]

Run it or fix it. Drill the ends of the crack, heat the spot you want to weld to cherry red with an oxygen/ fuel torch, acetylene or propane, and use a decent welder. You should probably use cast iron rods and stick weld it but I used a Miller 225 mig I think and turned it up pretty hot. It's still holding after many years.

 

[PCH]

That's minor- run it. Another option: https://yoshifab.com/store/90-exhaust-manifold-crack-service.html

 

[Led]

I’ve got a stick unit and a cutting torch.

Brazing it might be easier.

 

[Led]

That's minor- run it. Another option: https://yoshifab.com/store/90-exhaust-manifold-crack-service.html

This is exactly the advice I was looking for.

 

[Metallo]

Run it or replace it?

If this is the old genuine Volvo one, follow the advice you were given above.

For your reference, I hope that you will not have my experience shared here

Alex