How hot does it get where mufflers join pipes

[george_park]

Anyone have any idea how hot it gets where the mufflers join the stock pipes?

 

I put some permatex 1B form a gasket on and I'm wondering if it's going to burn away... 400F limit.

 

Thanks,

gp

[SaltyDawg]

As hot as AtlantaDragonslayer on shipping charges.

[Ozark]

As hot as AtlantaDragonslayer on shipping charges.

:no-no-no:

[george_park]

Any ideas of temp in an objective system of measurement?

[Yammer Dan]

Hot enough that I can't find anything to patch a split in bottom of the collector. Blows everything right out of there. How hot is a exhaust?? I think Pematex has a Hi-Temp one that goes about 600 degrees. Blew it out too.

[BoomerCPO]

Has anyone tried JB Weld on these exhaust system joints? I have seen this stuff hold up excellent on tractor exhaust systems.

[BuddyRich]

This is for a different engine but I would say all are about the same since we are using gas as the fuel.

 

http://www.ratwell.com/technical/Temps.html

 

 

http://www.ratwell.com/technical/Temps/Exhaust.jpg

[AZSpyder]

Has anyone tried JB Weld on these exhaust system joints? I have seen this stuff hold up excellent on tractor exhaust systems.

 

I think JB weld is just normally used to hold the first generations together.

[GeorgeS]

I measured it on my Busa. It hit about 375 at ( temp gauge ) red line, with engine idleing.

 

2 inches from the input to the muffler.

Edited September 27, 2008 by GeorgeS

[Yammer Dan]

Has anyone tried JB Weld on these exhaust system joints? I have seen this stuff hold up excellent on tractor exhaust systems.

 

 

Blew it out too!!

[GeorgeS]

Why not just get a new set of stock Seals ?? Thats what I did. You need 6 total at the canistor.

[Yammer Dan]

My collector is split across the bottom. Invitation to pull it remove baffles and weld back up but I was trying to make it last til winter. Don't sound that bad but loud.

[1BigDog]

Maybe you can get by with that exhaust pipe wrap that you see on choppers.....

[Mordalo]

If you're blowing out JBWeld, it may not be a temp issue. I put hi-heat Permatex copper where my slip-ons meet the manifold and that worked great. On my car, I put JBWeld where the Manifold meets the Caty, and that got me through emissions testing just fine (I let my 18-year old daughter take the car in so that the kid at the lube shop wouldn't focus so hard on the visual inspection of the car... shameless I know) so I'm thinking it may be the size of the leak, not the temp rating of the product you're trying to plug it with?

[Yammer Dan]

Crack is about 4 inches long and it flexes enough someway to blow out everything I tried. Guess pull and weld is next.

[george_park]

I put a pair of baron's slip on's so this is all where the muffler meets the exhaust pipe. On the stock pipes there are gaskets, on the Baron's pipes it's just metal to metal with a clamp.

 

So far I just smell a slight burning smell (don't know if that is normal) from the Permatex but it's still in there, between the pipes, muffler flanges and the clamps...

 

The stuff I put on only goes up to 400F so I don't know if that will cut it.

 

gp

[Mordalo]

But if your welding skill is anything like mine, the slag will work about as well as JBWeld does.

[Mordalo]

I also have Baron Slip-ons. And The Permatex copper worked fine for me. The burning smell is normal. They coat the pipes with a lubricant to keep it from scratching, and if I remember correctly, that stuff was on the inside as well. Not sure how you're going to scratch the inside... but then again if there's a way to scratch chrome, I've found it.