Smoke tap

[Pale Rider]

I installed a pressure fitting for smoke on my DA 50 stock muffler, complete with red loctite and it keeps backing out...what else can I do to keep it in ? I dont want to torque it down cause there isnt much metal..looks very thin..

[macanaw]

Here is what i do. Take a 8/32 pressure fitting and a 8/32 nut. Solder the nut onto your exhaust, then drill a small hole inside the nut through the exhaust. Use red locktite and cinch the sucker in place.

David

[Pale Rider]

So you solder the nut right on the outside of the exhaust, drill a 8-32 hole (untapped) through the muffler, then instead of screwing into the muffler you torque it down on the threads of the nut ? The solder doesnt melt from the heat ?

[macanaw]

Don't drill an 8-32 hole or you will drill out the threads of the nut. Go down is size a little. You don't use "solder" like the stuff you use for electronics or plumbing, more like a brazing.

David

[Pale Rider]

Ok I think I know what you mean...I dont have access to anything thats suitable for brazing..not even sure what that is !! LOL..

all I got is some ratty old Silver Solder and a 100w solder gun..

[jaguar bone]

Consider silver solder with a torch for heat source - or betta yet , ASK DA!!??

[scoubidou]

If you can glue plywood with epoxy then JB weld could be for you http://jbweld.net/products/jbweld.php

[Pale Rider]

Yea I asked them and they said they havent had any problems using red loctite so that wasn't much help

[Pale Rider]

	Quote: Originally Posted by scoubidou
	If you can glue plywood with epoxy then JB weld could be for you http://jbweld.net/products/jbweld.php

Already tried that too..cleaned all surfaces and mixed..it craked after 3 flights Maybe Ill try it again

[Pale Rider]

I think I found something that might work

http://www.durafix.com/

[ChrisR]

I used some RTV silicon on the threads, worked perfect. I didn't have any problems with it. Worth a shot if you have some laying around.

[Pale Rider]

	Quote: Originally Posted by ChrisR
	I used some RTV silicon on the threads, worked perfect. I didn't have any problems with it. Worth a shot if you have some laying around.

I have some of that copper permatex I could use

[ConRadical]

Just an FYI... since i've seen the confusion before.

Bbrazing is using brass and heat. Soldering is using solder. Just sometimes you use thick solder which it what people often incorrectly call brazing.

Also, you can't braze stainless, you'll have to silver solder it.

[Rolling Thunder]

I thought the difference between solder, braze and weld was the temps used. I have no metal skills so I could be wrong.

[macanaw]

I go to Home Depot, in the section of welding stuff they have "solder" that is 50% ish silver. Works great on all exhaust stuff. They also have torches for about $35, be sure to use MAP gas instead of propane, MAP is much hotter.

David