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Discussion Starter #1
While replacing my locked up right rear caliper I noticed the tailpipe flange is really rotted and leaking and i'm sure its only a matter of time before it breaks. I see a couple people have made a repair with just a coupling which is what I would like to do. Does anyone know what size the coupling needs to be considering the two different sized pipes?

Thanks
 

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Not sure about your proposed fix, but do make sure your wiring harness (running along the frame) is protected while you find a solution. Leaky/hot exhaust + wiring = no bueno.
 
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Makes me wonder why that spot on the exhaust is first to rot? Its on the Uphill in the exhaust system so idk how condensation or anything can sit? Hmm...
 

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I fixed it last night. A 2 3/4 I'd x 2 1/2 od adapter. Nobody makes an adapter with a 2 1/2 id. I just made a butt joint with a stainless easy seal clamp. Total parts 16 bucks.
 

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I just had the same issue with my 2011 Titan with 58K miles. Just makes me think the exhaust design and material is terrible. The flange over the axles was so rotten that I pulled it apart with my hands. Also the back of the muffler had all sorts of rot on it. I replaced it was a stainless Gibson Swept Side exhaust that I bought ton Amazon. It was $440 shipped to my house so I was happy with the price.

Overall the install was pretty terrible and not because of the Gibson exhaust. The P.O.S. stock Nissan exhaust was rusted and the studs on the back of the cats would strip, break, or bend. The first bolt I stripped the nut and used a removal socket that ended up breaking the stud. The second stud, I heated up cherry red then hit it with the impact, got the nut off but destroyed the stud in the process. The short version of the story, I ended up cutting all the studs flush and drilling them out. Then I used stainless bolts, nuts, and lock washers to assemble it again.

Assembling the new Gibson exhaust took me an hour but removing the old exhaust and fixing the studs on the cats took me at least 4 hrs. I was not a happy guy. I think the quality of the hardware the Nissan uses is total garbage. I have never had as many stripped nuts as on this truck.

The Gibson exhaust is louder than stock but not obnoxious. My only complaint is that is drones a little at 1500-1600 rpm which is around 40-45mph with the Big Tow package. On the highway is sounds stock which is great. 70-80 mph is is dead quiet. Gets louder around 60 mph. I don't notice any gains in performance or mpg.
 

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Discussion Starter #10
Yeah, the rest of my exhaust is scary. With only 33k miles on it it was pretty disheartening to see. The entire truck is spotless otherwise. The paint etc is still intact on the frame after 6 new england winters. Do you have any sound clips of the gibson?

Thanks,

Andrew
 

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Sorry I don't have a sound clip of it. I searched youtube for sound clips of Gibson exhausts. Most had aftermarket B-pipes on them but the sound is very similar. Try this link because the exhaust sounds just like this: https://youtu.be/-IiYrYpwKMM
 

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I recently had this issue. I heard a grinding noise and stopped pulled over. The exhaust snapped at the flange fell off and wrapped around my axle dragging on the road. I took it to a exhaust shop and had them move the muffler forward a bit and put the exhaust out infront of the tire. I don't think I'll have anymore issues.
 

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Look into the JBA 40-1400 Catback also as its a top performer and the cheapest stainless mandrel bent system available and not much louder than stock, I have sound clips of it on my website. I can also get you a stainless or aluminized steel universal tailpipe.
 

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Pretty sure thats a Nissan problem in general. My wife's 2011 Cube flange rotted out in the same spot. Stealership quoted us almost 1000 for a new mid pipe and muffler plus install. I cut both ends off and used an adapter and some hose clamps. 6 bucks from AutoZone. For fun, I looked up under the T and found the same problem. Gonna use it as an excuse to buy some new pipes pretty soon.
 

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Fixed mine.

 
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