Cracked Manifolds

[TimboNZ]

Greetings from NZ!

Does anyone out there have a proven method of sealing cracks in exhaust manifolds other than welding? Mine have more cracks in them than the mother-in-law's face but following my recent unexpected expenditure I don't want to have to get new ones fabricated quite yet. I suspect they are so thin that welding isn't an option.

.......and Happy Christmas everyone!!

[Number 7]

You might get lucky with weldng them, but as they are probably 10-20 years old, I wouldn't count on it. You can buy them over here, from the likes of ACT and JP. Don't know if they ship to NZ, but wouldn't it stll be cheaper than heaving a set made specially?

[adam quantrill]

It depends really - if the manifolds have been replaced before they may not be thin at all. It also depends on how much rain etc the car has seen - I thing the gradual thinning is due to very slight corrosion which flakes off.

If you can weld them on the car that's the best bet (as they stay in alignment, and you can test them too) but by the sounds of it yours will have to come off.

When welding mine I invariably puncture on the first weld but if you play into the new weld material you can build up a new outer skin.

Any redidual ticking can be sealed with fire paste over the welds.

[convert]

I used some Fire seal 2000 on mine, lasted a good couple of years...

http://www.frost.co.uk/item_Detail.asp?productID=8...

[rev-erend]

Get them brazed.. or just buy some new ones.

[Jonny weggie]

Hi Tim, there is an epoxy putty [for metal] out there that is good for patching metal and it does go as hard metal.
If need more info e-mail me and i'll find out details for you.

jonny.