JB WEld Hi Temp on Manifold - burning off?

[Horatio]

Hi all, has anyone else tried using JB Weld High Temp on their exhaust manifold? The stuff I put is causing a burning smell (really bad) after driving the car for a few mintes.

I'm worried that it's going to catch fire or something; should I try and chip away whatever I can before driving the car again?

Thanks

Greg

 

[Loobed]

Some how I think an exhaust manifold gets hotter than 400*F

I doubt it will catch on fire.

 

[Horatio]

yeah, I should've thought that one through before putting the stuff on there. I swear the packaging suggested manifolds as one of the uses but I see now they don't recommend it. I wonder if it's older package or something but the temperature numbers should've been enough of a clue. (I'd try and blame the metric system but that doesn't really fly either

)

In any case I e-mailed them and they tell me that there is no fire risk; just smoke, then ash which is a relief.

Thanks for the reply

 

[javacontour]

Maybe INTAKE manifolds, but not exhaust manifolds.

They can suggest manifolds because there are two types. Only one is potentially suitable for this product.

 

[Mitch Alsup]

The exhaust gas comming out of the cylinder is 1500-1700 degrees!

The steels that can deal with these temperatures have 1250dF temperature ratings, and glow in the daylight when "properly" warm (cherry red at night).

Somehow I thing all of this adds up to something a lot hotter than an expoy can deal with.