I have my dp clamped to my OEM catback and its leaking a little. I cant tighten the clamps any more so im looking to braze it to seal it up. I've got a handheld mapp tourch laying around and I was wondering if I could use that to braze a lap joint to seal it up. It would have next to no stress on it. Mainly just a seal. What rod should I use? My SS DP has a slit in it could I braze that to seal it also? Another thing can a braze a wideband bung to my DP? I literaly have no money to pay to have this done and its needs to be sealed and quiet asap.

 

A little late on the reply, but, you'd be much better off with a mig welder spooled with flux core wire. (No need for shielding gas, saves money) Also, I believe you would be hard pressed to generate enough heat from your MAPP torch to braze anything larger than 2" copper, and even that would be a stretch.

 

DO NOT BRAZE YOU EXHAUST lol. Wtf? The solder will melt. It will never hold up to the vibrations. MIG or TIG it. That is all. I'm a nuclear certified welder with over 30 certifications. Trust me.

 

Harbor freight sells a decent mig welder for cheap. I've used mine plenty of times for exhaust modifications.

 

Yea you can get Flux - core wire that should work fine. If you REALLY want a good weld get a small bottle of 75% argon 25% CO2. Dual shield weld is super strong weld compared to just a inner shielded wire weld. Or, bring it to me and I'll TIG it for ya lol

 

I took it to cole muffler and they destroyed it and I ended up getting a new downpipe for free

 

Haha awesome. Btw, don't believe people when they say "you don't need shielding gas to weld" that's a load of crap. Put your non shielded weld against mine and I'll make you look inferior. GOOD DAY SIR :-)