How about plain old fashioned welding?

 

quote:Originally posted by shannon

How about plain old fashioned welding?


That'll definately burn the ceramic coating. JB weld won't handle the heat on the exhaust system. Either reweld then recoat the pipes or leave it and let it rattle.

 

I got this from the JB weld web site:

quote:Q: How much heat can J-B Weld withstand?

A: J-B Weld (Part # 8265-S, 8265, and 8280) can withstand a constant temperature of 500 degrees F. The maximum temperature threshold is approximately 600 degrees F for a short term (10 minutes).

Q: Will J-B Weld work on an automotive exhaust?

A: Because of the extreme temperatures of exhaust systems, we do not recommend J-B Weld for use on exhaust manifolds and catalytic converters. Nor do we recommend the product for repairs within the combustion chamber.

 

Even before I read the above post I would have not had confidence in its ability to hold in such a situation.

 

There is not any type of glue that I know of that will withstand both the heat & vibration. Boiler cement would stand the heat but the vibes would shake it apart.

Suggest aligning the cover then drill a pilot hole through the cover & through the pipe. Remove the cover & install a steel nut-sert in the pipe. Fabricate a spacer to fit between the pipe & cover & attach it all with a stainless pan head machine screw. You could paint the head of the screw whth high temp exhaust paint.

 

Here are the things I trust JB Weld for...

 

quote:Originally posted by DFW_Warrior

Here are the things I trust JB Weld for...


uuuuuhhhhh...that's a really short list. I'm with you on that one.

 

I think JB weld is good for certian applications, this might be alittle extreme for it though. A buddy of mine had a truck that had a bullet hole in the radiator (don't ask, long story). He pulled it off laid it on something it would not stick to and proceeded to fill the hole with the stuff. I didn't think it would work but it did, sealed it up good....

 

I used to use JB weld on the pipes on my gas r/c cars and so did all the other guys. I forgot where it used to go, but it held up fine. I'm not 100% sure, but those pipes probably would get up to 300 plus degrees. I suggest he should at least try it and see what happens. He has nothing to lose or damage by doing so.

 

Actually welding it is an option, but I really don't want to have to have them recoated.

I guess i'll try the JB, I wouldn't think the shields would heat up to more than 500 degrees. As Vector said, I got nothin to lose.

 

quote:Originally posted by vector18

I used to use JB weld on the pipes on my gas r/c cars and so did all the other guys. I forgot where it used to go, but it held up fine. I'm not 100% sure, but those pipes probably would get up to 300 plus degrees. I suggest he should at least try it and see what happens. He has nothing to lose or damage by doing so.

I agree with you try it

 

Since the subject of JBWeld in up I have a question. I bought some mirrors a while back and had problems with the moving at the stem after a few hours. I tried blue and then red loctite with no luck. They'd stay in place a few days and them start to turn around again. Would JBWeld work to hold them in place? I had to put the stock mirrors back on since then. Oh, the mirrors are turning where the adapter goes into the mirror, not the pedastal.

 

I used the red and had no problem the issue with JB weld is that it could ruin the aluminum threads if it didn't work

 

a quick search on Google turned this stuff up:http://www.flexbar.com/PDF/346.pdf. There is a link on the page to order the stuff at $9.95

I don't know what the tab looks like or where on the heat shield it is but if you are worried about adhesion to ceramic coating why not dremel down to bare metal where you want to mount it? I assume its on the inside of the heat shield where no one will see it.

 

There is a product that is a strip of two color plastic type stuff for exhaust repair, you tear off two equil pieces and work them together till they are mixed good then use it to repair your pipe, its cheap and might fix it, this company has this stuff for radiators, gas tanks and other stuff, dries hard as steel. Auto parts store carry it.

 

JB sounds better than it is, like it'll handle 9,000 pounds of pressure, but it crumbled apart when I tried to use it to prevent my side mounted plate from spinning.

 

I used some on my swingarm.The tab that holds the upper belt guard broke at the weld.It's probably stronger now than when it came from the factory.