Installing a used exhaust system

Joined
Mar 20, 2008
Messages
14,350
Location
USA
Why does ANYBODY buy used parts?

There are parts that are good to buy used, but not a muffler :cautious:

Mufflers rust so bad, they're not worth buying used. Buy one that is stainless, so it won't rust again for a long time. Someone else quoted $1200 for a catback at a shop, and you said a new one would cost at least $900. Magnaflow has a stainless catback for $1000.

Was the factory exhaust on the Sequoia stainless? That era is when mfrs started switching to stainless exhaust :unsure:
 

atikovi

Thread starter
Joined
Apr 27, 2010
Messages
13,602
Location
Suburban Washington DC
Mufflers rust so bad, they're not worth buying used. Buy one that is stainless, so it won't rust again for a long time.
Mine had 500,000 miles and just starting to rust. If I find one with 200,000 miles that will go another 300,000 miles for a fraction of new, I'll go with that.

Old muffler out.

IMG_4523.JPG
 

JTK

Joined
Aug 14, 2003
Messages
14,917
Location
Buffalo, NY
Mine had 500,000 miles and just starting to rust. If I find one with 200,000 miles that will go another 300,000 miles for a fraction of new, I'll go with that.

That is amazing No way an aftermarket one wouldn't last a fraction of that time. 5 hangers in about 4ft of section. LOL

The only exhaust work I've needed done in the past 20yrs was on our 2015 Nissan Versa. A flange just before the rear muffler rotted right off. I could have been repaired with some cutting and a piece of pipe, but my closest mom/pop shop would only replace the whole cat-back. The Napa parts all-in were under $300. $600 total to have it slapped on. It's rustier than heck already and it's only been 1yr. Napa parts + Nissan, the Chrysler of Japan.
 
Joined
Dec 31, 2017
Messages
12,553
Location
SE British Columbia, Canada
You should see the stuff out there to repair holed mufflers. Muffler tape, muffler cement, aluminum sheets glued on with Permatex Ultra Copper ( guilty of that one 😇 ) A used muffler is 100% better than those fixes out there. :cool:
 
  • Like
Reactions: JTK
Joined
Aug 3, 2017
Messages
2,237
Location
MN
This is an... impressive amount of work to repair an exhaust. Having recently replaced stolen cats on a similar truck, I can attest to the fact that Toyota exhaust leaves a lot to be desired as far as repairs are concerned. I'd never have gone as far as you have, but as a fellow cheapskate (no offense) I must say hats off for the effort.

I just installed a muffler on my '00 Grand Cherokee, which couldn't have been easier. The factory exhaust is about at simple as it gets: Y-pipe off the manifolds, followed by a straight shot into the cat. Same for the outlet: straight shot into the (now new) muffler which then connects to the over-axle pipe and finally the tail pipe. I was able to remove the OE muffler and install the replacement/pipe extension in about 45 minutes. That includes the MN rust factor.
 
Joined
Mar 3, 2022
Messages
835
Location
Amherst, MA, usa
we're the type w/time. R&R usta mean remove'n repair. Now it means remove/replace.
Torches, mig welder, scraps around = good for 10K @ my place...
I once used my 2 ton press for a 'muffler expander' (the pipe was placed over an extra large scocket).
It kinda worked, he aint come back anyway aahahaha (son's friend).
 

atikovi

Thread starter
Joined
Apr 27, 2010
Messages
13,602
Location
Suburban Washington DC
Got it all done and it was a lot of work, but worth it to me over the cost of new parts. If I replaced the cat, I could see the studs on the manifold snapping off and then having to replace the manifold, and maybe it's bolts snapping. Didn't want to go down a rabbit hole.

The only non-original cut behind the left cat and joined with a band clamp.
IMG_4541.JPG


Needed just one new gasket between the right cat and muffler.

IMG_4543.JPG


And a new clamp between the muffler and resonator pipe.

IMG_4545.JPG


Original resonator still fine.

IMG_4548.jpg


Just back from getting a Virginia safety and emissions inspection.
 

Attachments

  • IMG_4543.JPG
    IMG_4543.JPG
    145.8 KB · Views: 4
Joined
Oct 20, 2005
Messages
8,492
Location
Scruffy City
That’s not bad at all… I usually use the walker stainless band clamps if I have to go aftermarket , but they usually need to be ordered.

Good work getting the joints apart.
 
Top