I got my dad to remove his Resonator
 

so he was thinking to replace that Old perferated Resinator out of the 300SDL... well i saved him $180 but just adding a short 2 feet pipe where the resonator was at, Yeah SHE SMOKES!!!! And Turbo spools faster too... i looked into the resonator and man there was a ton of SOOT and cr@p in there.... And the best thing it, it's quieter....

wanna come down and remove mine, LOL. Just wondering did you weld it in or did a shop.

Come on...quit being rednecks!!! Fix the exhaust right!!

I think no resonator in your car would sound weird.. The diesels have the turbo to help quiet things down.



When ever I accelerate briskly in the SDL I get tons of soot out of the tail pipe. Like, enough to make a cummins over jealous.

I had to re do the exhaust on my SD, I had the fella doing the work just straight pipe it back to the muffler, new OEM, it is a little louder at highway rpm, no difference at idle.
He welded a support bar, and utilized the stock hanger points.

80's old school, there is less weight now, and less expense to boot, the way I see it, it's a win win situation, but if you insist, knock yourself out.

The 617 turbo sounds best with a 2.5" straight pipe from the turbo to the rear....woo man does it sound good. Especially when its warmed up at idle after a good freeway run....sounds like a ginormous truck in back. (not in loudness, but in the rhythm and sound/feel)

I will never go back! :)

Not to mention the turbo spools instantly and off the line torque is better, its got more power all around....

Just to clarify are you talking about the resonator in the middle of the system or the muffler at the rear?

They are. They're removing a malfunctioning device and replacing it with a better alternative.

I 100% agree! im sure if there ever was a performance exhaust made for these cars it would be something just like that.

I think my resonator is falling apart internally - it rattles at a certain rpm..... this makes me feel even better about my idea to remove it and replace with with a straight pipe!

It's not like your turbo will spool faster........:D:D

very true - and not having a turbo will also make it a bit louder.... I can always put a new resonator in if I don't like the straight pipe for some reason.... My exhaust is far from stock anyway - definitely a muffler shop job.

I haven't looked at my exhaust on the '95 but it has a great sound, nothing at all like the W123's. Has kind of a growl to it when accelerating. I can't imagine it isn't stock but need to crawl under there to have a look......

I've got some issues with the '87. It's the stock factory setup and it exhibits a resonance at 1200 and 2400 rpm. It's very noticeable inside the cabin and quite annoying.

What I'd like to determine is whether the resonator has failed on this vehicle.

Can you kindly check your father's car and pay careful attention to 1200 rpm for a light droning sound inside the cabin. There should be ZERO exhaust noise from an SDL at any rpm. I'm curious if it's now present without the resonator.

Be very cognizant of what you're listening to............I'm depending on you for a precise answer.

I also have no center resonator on my '81 non-turbo coupe. (the price on it was something like $900!) I have a 2" straight pipe all the way back to the rear muffler. (with a little JC Whitney flex-pipe under the differential)

It does drone a bit in the midrange but overall I think it added a little HP to eliminate it. With only 83 HP to begin with I'm grateful for any increase I can get.

The issue with the 617 is the mount for the exhaust system when the resonator is eliminated. Any hard mount will cause the resonance. If the system is hung on rubber............there is no additional noise. The SD is identical before and after the resonator..........as well as I can determine. Right now, it has a single support at the rear muffler. I'm not happy about it, but it's very quiet.

Well we installed a new ANAS muffler behind is not straight pipe, It was quieter because we had a hole in the resinator, and its run good there is no dreded droning noise at any rpm... I had a shop did it for $45...

FOr the OM617 you can use a a rubber exhaust mount and get a long thin bar and put under the exhaust pipe so it hold's it, and add a Heat resistance Rubber under the metal bar so you wont have the annoying buzzing exhaust sound at idle... I ll see how this guy will do on my straight pipe on this weekend... :D

My Euro 5-speed 300TD has a nice growl while revving up through the gears - a sound I don't remember hearing in any of my friends automatic turbo-diesels. Hopefully, I won't need to 'straight-pipe' anything for awhile, as the PO had a complete OE exhaust system installed, but I do wonder if eliminnating my resonator would result in any performance improvement.

Happy Motoring, Mark

Removing the resinator will give it a little more pep in acceleration....

My straight pipe is supported by two hooks with rubber donuts at the back of the car, plenty good, since the tube is very rigid and sturdy, and doesn't weigh much.

Well i cant wait till this weekend to get me exhaust done he said he'll charge me $75-$100 but no more than $100 for a pipe that replaces the muffler and the resinator....

Perhaps you meant ANSA....it was a good laugh though thank you!

At least it wasn't an ANUS muffler, I hear those stink.


:D