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Old 10-24-2013, 09:29 PM
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Constant exhaust problem

Hey guys, I bought my wrangler back in February and since then I have broken the exhaust 3 times. Number 3 being tonight. It broke where the tailpipe meets the muffler. Again. Anyone have any idea why this keeps happening? And an easy way to fix beside taking it to a muffler shop and spending 200 bucks again
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Old 10-24-2013, 09:51 PM   #2
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I haven't had problem for like 22 wheeling trips. That includes some rick crawling. What is getting snagged?

Bought all Walker parts at AZ no issues. Bolted right in 1 hour.

Something hanging down?

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Old 10-24-2013, 09:56 PM   #3
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Are you missing a hanger?
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Old 10-24-2013, 10:12 PM
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Quote:
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Are you missing a hanger?
Checked all hangers, everything's good. That's why I'm stumped
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Old 10-24-2013, 10:37 PM   #5
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Weld it together, mine kept breaking at the far most hanger next to the tank and I couldn't figure it out either. I ended up welding the metal hanger to the pipe but with a pipe clamp and now it's steady as can be
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Old 10-24-2013, 10:43 PM   #6
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I think I might know what the problem is.

The way the drive train is placed on the YJ might be the reason. Let me explain.

The only thing holding the engine and the transmission is the engine mounts and the skid plate under the Jeep.

Some of the hangers come off the transmission to support the exhaust.

When you do a quick take off (put a lot of torque through the drive train) the engine and the transmission actually moves; moving some of the hangers. This lifts up one part of the exhaust (from the engine down to the beginning of the muffler) while the other part stays still. This separates the exhaust.

It happens to me sometimes, but I never actually broke it - the piping just came apart.
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Old 10-24-2013, 10:59 PM
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Quote:
Originally Posted by luv2bmx22 View Post
I think I might know what the problem is. The way the drive train is placed on the YJ might be the reason. Let me explain. The only thing holding the engine and the transmission is the engine mounts and the skid plate under the Jeep. Some of the hangers come off the transmission to support the exhaust. When you do a quick take off (put a lot of torque through the drive train) the engine and the transmission actually moves; moving some of the hangers. This lifts up one part of the exhaust (from the engine down to the beginning of the muffler) while the other part stays still. This separates the exhaust. It happens to me sometimes, but I never actually broke it - the piping just came apart.
I see what your saying, the exhaust system is supposed to flex a bit to compensate. Seems like mine is just rigid. I looked at the break and it looks like a stress fracture just ripped it apart. I'll post pics tomorrow when it isn't balls cold outside
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Old 10-24-2013, 11:17 PM   #8
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I see what your saying, the exhaust system is supposed to flex a bit to compensate. Seems like mine is just rigid. I looked at the break and it looks like a stress fracture just ripped it apart. I'll post pics tomorrow when it isn't balls cold outside
It does have some flex, but not too much.

Not too long ago i had a broken engine mount. My exhaust kept coming apart because the transmission and engine would twist so much when i went in reverse or forward in 4low. After I replaced the broken engine mount it didn't twist as much (but still some twist) and the exhaust doesn't come apart anymore.

That's the only thing that I can think of. I mean it shouldn't just break unless you're catching rocks on it or maybe your rear axle is hitting it.

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