Hey guys , Looks like I'm going to need a exhaust system pretty soon . I have 3 trucks that are straight piped cummins turbo diesels ...they run cooler , spool up fast and sound great .
I did find a few sites that do custom stainless ...I really did not like the $800 + price on a stainless system , and my exhaust dose not have a front muffler on my system .
I will proibly buy a stainless down tube and fab my own system ...I have a nice Tig welder ....and skills !
I would like to keep the pipe as straight as possible ...anyone ever run there exhaust staright down the center , since the rear is a solid mounted center section ?
I was thinking 2.500 dia. 308 or 316 stainless tubing , what ever I can get my hands on .
Any info on what guys area running would be welcome .

Thanks

greg

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1983 300cd

Straight pipe, no muffler, no resonator. Not sure of the size.

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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

Same here. Mine is a 2.5" pipe from the downpipe on back.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

How dose it sound ? I would figure the inline 5 should sound pretty good . I know from my other diesel systems the mounts for exhaust tubing are pretty important ...really good rubber isolated mounts are very important , othere wise you can feel the diesel engine viberate through out the whole body .

greg

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1983 300cd

Search YouTube, there are several videos of people that have straight piped exhaust.

sounds pretty mean!

http://youtube.com/watch?v=pnPFaLZChZk&feature=related

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1985 500SL Euro w/ AMG bits 130k
1984 300SD Turbodiesel 192k
1980 240D Stick China 188k
2001 CLK55 AMG 101k
2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!!

Question: does "straight-piped" mean no muffler?
If so, don't most states require a muffler?
Is there a performance benefit to not having a muffler--does it improve acceleration?

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1982 240D automatic
Odometer quit at 307K...about 325K now

In some states a turbo is considered a muffler since it is a significant restriction to exhaust flow.

Ok, I was wondering. My 240D is already pretty loud with a muffler. I was thinking without one I'd be like a semi rolling through town!

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1982 240D automatic
Odometer quit at 307K...about 325K now

not in FL


thats where a cherry bomb comes in

What does a resonator really do? I thought about pulling the cat(more power and MPG) since they don't test emissions in FL.

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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

That's the idea

I'm running stock exhaust on the 300D. The 240 has one muffler, but I think it's supposed to have two. Sounds 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 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.

I'm really seriously thinking of trying this on mine. The exhaust is so stupid simple, can just unbolt it at the flange even with the front edge of the doors, and build a copy of it from there on back - minus muffler and resonator. It should be pretty cheap to using some of the semi-mandrel bent pipe pieces that NAPA sells.

Then, if its too loud, adding a cherry-bomb glasspack later to tone it down will be easy enough. Taking the stock exhaust off as one piece and hanging on to it, also means it will go back on really easy if it doesn't do anything for mileage, etc.

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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown

At WOT it is a little loud with the windows down but not enough to annoy me inside the cabin.
I like it when I shut the car down, get out and you can hear the turbo spinning through the exhaust.

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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

I deleted the resonator and muffler and put on a less restrictive exhaust...and it was too loud, it set off car alarms as I'd drive past.... I'd guess that almost half of the noise was from the intake. I put a "hi-flow muffler' on and that helped keep down the noise.

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Cheers,
Robert