Hey all new to this site. Came from another site where most of the information I get is "do a search". I have a 1985 300SD (W126) Turbo Diesel. On the stock exhaust before the muffler there are two more what looks like mufflers. What are these and are they needed?

Resonators. They are not required for the engine to run properly but they do reduce noise.

Thanks for the info! Away they go!

Uh you want to keep one or the other, unless of course you dont care about your hearing.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

It won't be THAT loud. I run with an open 3" downpipe and it's not bad.

I also got rid of mine. It is not that bad. I just have a straight pipe the entire length of the car.

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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R

When I was running mine sans everything I noticed I started having a hard time hearing my wife. Then again maybe thats just marriage and old age. Seriously tho, it is something to consider.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I also have a 02 F-350 with a 7.3 diesel that is straight piped its not loud untill you get on it. The muffler will still be in place on the SD.

The turbo actually muffles quite a bit of the noise. A normally aspirated motor will be much louder with mufflers removed than a turbocharged motor.

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'98 E300 turbodiesel

I think the muffler must go as well. I will make sure the tip points to the ground 45deg or so.

depending on where you live you might get in trouble

according to FL Motor vehicle Law " a turbocharger is not an exhaust muffling device"

but as long as you are not hot dogging it in front of boss hog.. you're good

Now that gave me a good laugh.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I was playing around in my 84 awhile back, i had the exhaust off the downpipe ( so did my friends 1980 240dl) and damn, that soundt loud. Sounded like a semi truck. I was at a red light with thew popoe once, and I noticed he had his window down. He didn't even look at me when it turned green, so its not too loud, my friends NA 4 cyl volvo engine was dangerously loud though, and it gargled like hell. Anyone know what causes the gargling in a gasoline engine?

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1981 300SD 512k OM603

Listerine?

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
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1987 300TD
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Those 617s with an open exhaust manifolds are not that loud..


I know, as Garrett ran his with no exhaust, and it wasnt that loud...

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.