ok no flaming....
i know that jb weld is not meant to be used on headers and turbo manifolds, but what about past the cat?
i have 2 problems
1. i backed into a curb (no i won't explain how) and broke the hanger arm off my muffler. i don't have my mig welder here. it's at my moms house 6 hours away. so can i use jb weld to "weld" it back on, only for a month till i go to san diego.
2. when i hit the curb it broke my test pipe. can i also use it to fix the test pipe for a month?

any input would be great, i would rather not pay $20-30 to have a muffler shop do it.

oh - jb weld's website says it is resistant to 500 degs.
the car it's going on is a crx with a dohc zc. the exhaust is custom made by me with a flow master muffler. the only mods to the engine is a cold air intake.

thanks in advance
-michael

 

If you plan on welding it eventually, I'd say just bite the bullet and do it now. JB weld is a bitch to clean off.

 

1. Coat hanger technique.
2. Alumium can and coat hanger technique.

 

JB weld wouldnt even hold up to the vibration of an exhaust pipe. LOL where do these JB-weld ideas even seed from.

 

ok;
jb weld is not hard to clean off, you can either grind it or get out your torch and heat that bitch up.

a coke can won't work on the test pipe. this was the first thing i welded 5 years ago when i had one of them flux core migs. i guess i did not get that great of penetration cause the flange broke off the bottom of the pipe.

jb weld ideas come up cause jb weld kicks ***.
i've used it many times for other things on my car, but i was not sure what the temps would be on the exhaust pipe. do you have any proof that jbweld would not hold up to the vibrations of a daily driver exhaust. i'm not doing burnouts or redlining every gear, i'm driving to work. so as my teachers used to tell me "show your work" let me know why you don't think it would hold up.

i think i'm gonna use it and see what happens.

oh and i did not even think about using a hanger to hold up the muffler.
thanks for the answers

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">jb weld ideas come up cause jb weld kicks ***.</TD></TR></TABLE>
More like sucks ***. Tried it once, was disappointed, never used it again. JBweld =

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote"> do you have any proof that jbweld would not hold up to the vibrations of a daily driver exhaust. i'm not doing burnouts or redlining every gear, i'm driving to work. so as my teachers used to tell me "show your work" let me know why you don't think it would hold up.</TD></TR></TABLE>
Well... how am I gonna show you, its not like I have a video of a metal piece vibrating with JB-weld on it, but hey why dont you try it and tell us how it failed.

 

I gotta say that jb weld couldn't even seal a hairline crack that I had in the lip of my old tsw blade back in the day.

Haven't you noticed that on some cars the steel exhaust pipe can shear apart when the motor moves, and you expect jb weld to stand up to that... Not likely.

 

it will never hold up. id use a coat hanger before jb weld

 

i made the mistake of trying it on a stripped out o2 sensor once the night before i needed to go to work

it was a bad idea lol about 20 min in to my drive the o2 sensor poped out and since it was a factory wideband the car went nuts and started backfiring bad but for some reason wouldnt throw on the cel to just run rich i ended up having to use my safc to throw the light on so it would run good


since then i never use jbweld but if its your only option try it i guess since your a little farther down the exhaust stream and it might not get as hot

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jeremydde &raquo;</TD></TR><TR><TD CLASS="quote">I gotta say that jb weld couldn't even seal a hairline crack that I had in the lip of my old tsw blade back in the day.
</TD></TR></TABLE>
jb weld is not meant to seal up hairline cracks it's meant to stick things together.

flashmn maybe you used it wrong, i've never had problems with it.
i know it's not meant to be used near the header cause it's to hot.
other then that it works great, but i'm not gonna use it, i just found out that my neighbor has a welder. so i'm gonna have him do it.
thanks for all the input.
jb weld

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vegas hoe &raquo;</TD></TR><TR><TD CLASS="quote">
jb weld is not meant to seal up hairline cracks it's meant to stick things together.

flashmn maybe you used it wrong, i've never had problems with it.
i know it's not meant to be used near the header cause it's to hot.
other then that it works great, but i'm not gonna use it, i just found out that my neighbor has a welder. so i'm gonna have him do it.
thanks for all the input.
jb weld</TD></TR></TABLE>

It wouldn't stick to an aluminum wheel with any kind of pressure behind it yet you want to try to hold your exhaust together with it. An exhaust has heat and pressure behind it. Do what you will...

 

well like i said i'm not gonna use it, but
did you sand down the clear coat on the wheel before trying to make it stick?
and why would you try to SEAL something with something that makes things STICK together

if i had a hairline crack on a wheel i would take it off and throw it away. if your wheel breaks then your screwed if my exhaust breaks then nothing will happen.

but like i said if jbweld did not stick to something then you probably did something wrong (wrong mix, or not taking the clear off the wheel first)

 

How to use it:
Use J-B WELD as an adhesive, laminate, plug, filler, sealant, and electrical insulator. Squeeze out equal portions from the black and red tubes. Mix thoroughly. Clean surface to be bonded. Apply J-B WELD, and let it cure. That's all there is to it!

Like metal, J-B WELD can be formed, drilled, ground, tapped, machined, filled, sanded, and painted. It stays pliable for about 30 minutes after mixing, sets in 4-6 hours, and cures fully in 15-24 hours. It's water-proof; petroleum-, chemical-, and acid-resistent; resists shock, vibration, and extreme temperature fluctuations, and withstands temperatures up to 500° F. J-B WELD is super strong, non-toxic, and safe to use. Before it sets, you can clean up with soap and water. (print instruction sheet)

The inside back of my wheel was not clearcoated. They only clearcoat the front.
The backside of my lip had a crack from a pothole and was losing air by the bead. I replaced the wheel, but needed it to last another 2 weeks. JB Weld couldn't even seal the leak.

As you can see in the instructions from the website it is used as a sealant as well. Clearly you are unwilling to admit that the product has limited use at best. We are not all morons, we are capable of reading instructions. Merely claiming that we must have all "did something wrong" doesn't prove you are right.

Glad to see you are actually gonna weld instead of wasting time with JB weld.

 

I think JB weld is garbage too

even using it as a temporary patch can turn into a nightmare

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">flashmn maybe you used it wrong, i've never had problems with it.</TD></TR></TABLE>
Its not rocket science, I dont think I got the work method wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vegas hoe &raquo;</TD></TR><TR><TD CLASS="quote">
jb weld is not meant to seal up hairline cracks it's meant to stick things together.

</TD></TR></TABLE>

Actually, the reason that JB weld was developed in the first place was to repair cracked cylinder heads on the old for Flatty motors. The heads were very prone to cracking, and welding was too expensive. JB has it's place, but a high heat, high vibration, constant stress environment isn't one of them.

 

if u feel jb weld is so good, then go use it already. why argue with a bunch of ppl who obvisously dont konw the true powers of jbweld.

 

holy **** can't you read,
i've already welded it up. i found out that my neighbor has a welder.
and jb weld is like wd40 so many uses. just cause the one time you used it, it did not work right don't mean it sucks.
can we let this thread die i've already fixed my exhaust

ANYONE COMING IN TO POST, I ALREADY FIXED IT. SO I DON'T NEED MORE ADVISE
THANKS TO EVERYONE FOR THEIR OPINIONS ON JB WELD BUT IT DID NOT ANSWER MY MAIN QUESTION.
THANKS AGAIN
-mike