It only withstands temperatures up to 500 degrees F (260 C).

http://jbweld.net/products/jbweld.php

Mike

Stephen Overmyer wrote:
> Apologies for the lack of direct VW content here but since JB Weld is
> mentioned regularly here on the list I believe some of you users are the
> best volk to ask...
>
> Q : Is JB Weld able to handle the temperatures of an exhaust manifold?
>
> JB Weld is not commonly available here in Oz but I have occasionally
> seen it and will chase it up if it is likely to be able to do the job I
> require.
> BTW, this is not for any manifold on a Volkswagen but for my old Land
> Rover where I would like to effect a short to medium term patch or
> repair on a small crack in the manifold where it meets and bolts to the
> flanged connection on the remainder of the exhaust system.
> The crack is not large at approx 1.5" or 38mm long and could be
> dremmelled out and filled if JB Weld was indeed a suitable product to
> use. Just enough exhaust gas escapes at present to create some
> backfiring on deceleration. Muffler putty would of course be useless...
>
> I do have a spare manifold but removal of the existing one is not an
> option at this time as the vehicle is on a relatively remote property
> and I have no intention of tackling the old manifold studs and bolts
> while in this location. I always keep in mind the old maxim, "The
> probability of an event occurring is in inverse ration to it's
> desirability"...so in short, I aint risking it ;-)
>
> Just to add a little T3 content...I drove my waterboxer this week for
> the first time in over 5 weeks as I have been away down at my property
> in the Double Cab, leaving the WBX in the garage at home. She fired up
> immediately with only the briefest of lifter clatter before settling
> down to idle quietly....But what I really wanted to mention however was
> how pleasant it was to get back in the van again. They really are a
> pleasure to drive and some time away from the T3 really has made me
> appreciate them all over again...especially with the new Wolf console
> between the front seats that arrived from Terry K not long before
> Xmas...:-)
>
>
> Cheers,
> Steve O
> NSW Australia
> '92 Transporter WBX Kombi
> '00 Transporter Double Cab
> '03 Transporter Double Cab (work truck)
> '78 Land Rover 109 Series 3 Soft top ute (ex-Aust Army)
>
>