This is in relation to BenzTurbo's thread on driving a MB hard. I removed the EGR devices off the motor, I have new injectors installed, all the strange noises are gone, It sounds like a mule gargling marbles. starts easy, no smoke. would I gain anything by replacing the muffler with a more free flowing one or even straight pipe?

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1993 MB 300D 245K died.

Hmm... I can't say I'm familiar with this sound.

Dkr.

I searched youtube for "mule gargling marbles". This is what I got:

https://www.youtube.com/watch?v=wtX-o7IyvNI

I don't think that's what the OP's car sounds like.

Straight piping will get you some more noise and maybe a little quicker turbo spool up. I've been considering straight piping mine just for the sound, but I haven't gotten around to it yet.

We have a performance sub forum here for hot rodding the diesels. I'm sure this has been covered there. As for me, when I want to go fast, I just ride my motorcycle.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.

I want my car to sound like this!

It purrs at the moment but this is the sound I need for a classical car.

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Sam

84 300SD 350K+ miles ( Blue Belle )

The Mufflers on a w123 are already a straight through design. So replacing them with a Cherry Bomb, Glass pack, or some type of performance type muffler won`t do much to increase your Dyno seat of the pants off the line to the next red light, or time off the clock.







Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

i want to get get an exhaust off a 300d at the pick n pull so i can cut the rear muffler off and make a nice looking straight pipe that comes out at 45 degrees but still tucked under the car for the most part. i will leave the resonator to help with any drone and because i would get tired of very loud exhaust all the time. i want to keep my cd's exhaust because i'm sure it is coupe specific and i will probably want to re install it one day after i have my fun with "big truck" exhaust

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83 300CD- sanden, dual p/f condensers, 160a alternator, ect
91 300TD- 722.6, #22 head, 3.5L IP, w140 manifolds, ect

It depends...
If your catalytic converter is partially plugged, straight piping will certainly improve performance. If everything is right though, only minor changes, and sound will increase.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I think you will find that a straight pipe, if you go that way, will sound really "blatty" or sharp and unpleasantly loud at some points in the rev range. I had a straight pipe unintentionally a long while back when my exhaust broke ahead of the muffler. Did not like it at all.

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Objects in closer are mirror than they appear.

I've run a DT466 International and heard several N-Series Cummins engines straight piped. They sounded pretty good to me.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.

I see ...........
I live in an area flooded with straight-piped diesel exhausts. Dodge, Ford, Chevrolet and a myriad of medium and heavy duty trucks. As usual, they just sound like they have more oomph. Personally, I could do without all the noise pollution.

I had a diesel Ford that the PO had installed glass-pack mufflers on. Hated the noise, especially on any trip greater than 30 minutes. I've seen/heard vehicles with a "rumbling" exhaust noise that isn't too bad. But, as previously mentioned, a "blatty" exhaust note just sounds immature to me. (Fart can exhausts come to mind.) On a classic car, I just don't see the point.

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Sam

84 300SD 350K+ miles ( Blue Belle )

well that settles that. not much gain for a lot of extra noise

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1993 MB 300D 245K died.

Have you done the wastegate swap yet? On both of mine, I recovered power I hadn't even known I'd lost.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 159k miles
06 E320 CDI "Rutherford", Black on Tan, 179k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 77k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

I removed the egr and the throttle plate device, the turbo is working. I just replaced the injectors with monarks as well as replacing all the vacuum lines. For all this effort I got from snail speed to land tortoise.

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1993 MB 300D 245K died.

With this suggestion.
At this late date; Most of our turbo vehicles will benefit from this upgrade.

.

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ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/

I thought the W124 diesels were supposed to be considerably faster than a 123 turbo.

__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.