Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 04-06-2006, 10:12 PM
Registered User
Join Date: Oct 2005
Posts: 44
in the fall I took my old - swiss cheese exhaust off of my 82 300sd and welded up about 14 feet of 2 1/2" stainless steel pipe - I modified the path slightly for a little more straight run, but just because it was easier (I had to relief cut the inside of the curve and weld it back together - I couldn't find anyone local to bend it for me). I have been running it for about 6 months now and I am happy with the results - #1 total cost was $140, #2 the exhaust isn't any louder than it was with the swiss cheese pipe, #3 I shouldn't ever have to replace it (I used hand railing pipe - quite a bit heavier than most use) and #4 people always know I drive a diesel!
I don't notice any performance changes, or mpg increase, but all in all worth it I would say
Reply With Quote
Old 04-07-2006, 12:07 AM
t walgamuth's Avatar
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 33,240
i think

in a gas engine less back pressure is always good but it may cause need to adjust fuel delivery.

i remember back in the carburator days if you put on a very low pressure system you often had to rejet. i think richer.

then you got a bit more power.

and i have read that the webers on an old ferrari cannot be adjusted correctly if there are any leaks in the exhaust system.

tom w
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. It still needs upholstery redone...I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
Old 04-07-2006, 01:52 AM
Posts: n/a
Originally Posted by t walgamuth
One word for gassers: EFI. Problem solved.
Reply With Quote
Old 04-07-2006, 03:29 AM
pawoSD's Avatar
Join Date: Oct 2004
Location: Grand Rapids, MI
Posts: 14,923
My muffler system from the resonators onward is pretty rusty...don't know how long it has left, I've stopped trying to prevent its demise as the rust spray/paint is a waste of $$ at this point....chunks have been falling out of it and it won't be long till there's holes on the pipes going in and out of the resonators, there's already a small one on one of the short downpipes in the very least I am going to dump the resonators....Muffler....depends...I'd probably go with a 3" straight pipe right to the back, maybe split at the end with a nice double end piece or something.
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 73k - mine - (OC-75,000)
'17 Metris(VITO!) - 5k - wifes (OC-10k)
'01 E320 Wagon - 157k - mine (OC-160,000)
'89 420SEL 166k - mine (OC-167,000)
'01 E320 - 166k - dad's (OC-171,500)
'07 E350 Wagon - 128k - dad's (OC-132,500)
'01 SL500 - 48k - dad's (OC-52,000)
'09 E350 4matic Sedan - 118k - Brothers (OC-117,000)
Reply With Quote
Old 04-07-2006, 04:09 AM
Posts: n/a
You can take about 25% off the build cost to use 2.5 over 3. 3" is a waste and 2 1/2" from turbo to tail is more than our engines need. We don't have a 400HP cummins under the hood, 180Hp is all we can hope for without upgrading the pump internals.

It's like a 5" pipe on a Dodge/Ford/GM or 7" stacks on a semi. They look really cool but in the end are just for show.
Reply With Quote
Old 04-07-2006, 05:37 AM
Ara T.'s Avatar
Registered User
Join Date: Sep 2004
Location: Santa Rosa, CA
Posts: 2,075
I've been running without an exhaust for a month now I think.. was just messing around and unbolted the section under the drivers seat. It's pretty fun around town, kinda gurgly like a V8 with a lot of turbo whine. Once I get on the highway, from 60-70 mph the resonation is pretty bad. Not really a problem since I cruise at 55 and always have music playing.
1985 CA 300D Turbo , 213K mi
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 06:06 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page