Exhaust glue?

[Muncher]

I'm after some kind of adhesive to stick the heat shield back onto the mesh above my exhaust, it looks a pretty awkward job :(

It needs to be able to withstand high temperatures and be pretty strong, someone mentioned to me a metalic type glue used to repair exhausts? Anyone know of the name of this stuff?

[Pigeon]

There are several. Search Google for "ceramic adhesive". They tend to be not that easy to either obtain or use though.

[Muncher]

I'm trying to fix an oval shaped bit of trim onto the bottom of the mesh, the trim was glue on before but the vibrations had caused the mesh to break just above where it was joined.

[pdr479]

Stupid suggestion time, what about trying to stitch it with fuse wire or similar? well i did say it was stupid!!
Paul

[Muncher]

It extends backwards about 15cm so would need to hold that level too.

[GreenV8S]

How hot does the mesh get? The mesh would presumably conduct heat away, temperatures may not be your main problem. I'd be more concerned why the mesh broke and how to stop it happening again after you have reattached the trim.

[gilbertd]

There's some stuff that I've used to actually repair the exhaust on a motorcycle. I can't remember the name of it but I've seen it with a couple of different trade names. It may be chemical metal or something like that. It comes in a clear plastic tube about 3" long and is a two pack epoxy putty. The stuff looks like a 3/4 inch diameter sausage of plasticine, black in the centre and grey around the outside. You break a chunk off and knead it until the colour is the same (no streaks) and you get a lump of putty that looks and feels like a grey coloured Blu-Tak.

Sticks like sh*t to a blanket, sets rock hard in under half an hour and will withstand up to about 600 degrees. They also claim that it is so strong that you can drill and tap it if you need to.

[Mutant Rat]

Chemical Metal is the stuff Gilbert is referring to. Basically a high temperature epoxy. You should be able to buy it at any motor factors.

TBH, if the heat sheild is stuck to the mesh, it won't be that hot - if it was, the surrounding bodywork would suffer.

Chemical metal would certainly do the job, but tends to be quite slow setting. I'd be inclined to just use normal '5-minute' rapid setting epoxy.

>> Edited by Mutant Rat on Saturday 18th June 10:09

[Pigeon]

I don't think ordinary epoxy would do that job very well. You'll need one of the puttyish/fillerish ones such as Gilbert mentioned, which has much better gap-filling properties.

That "600 degrees" will be Fahrenheit, not centigrade... no epoxy will stand temperatures of 600 centigrade! The chemical bonds canna take it Cap'n...

Having seen the picture I agree that it won't be getting all that hot and epoxy will be OK for temperature.

[Muncher]

I've bought some kid of thermal epoxy and will give it a go tonight.

[TripleS]

There used to be a product called Gun Gum which was an exhaust system sealant, but I'm not sure to what extent it would be helpful as an adhesive.

Best wishes all,
Dave.

[Youth Gone Wild]

TripleS said:

There used to be a product called Gun Gum which was an exhaust system sealant, but I'm not sure to what extent it would be helpful as an adhesive. Best wishes all, Dave.

There still is, and I suspect at some point I shall have to use it.