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 > Diesel Performance Tuning

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-22-2015, 07:04 PM
mach0415's Avatar
Diesel Weasel
 
Join Date: Mar 2010
Location: Lawndale, NC
Posts: 648
1985 300SD repower

Hey all,
I have a 1985 300SD and it has over 400K miles. The OM617 is starting to get tired, but is still fairly reliable. I have had the car for 8 years and have grown attached to it. I am considering rebuilding the engine or finding a lower miles 617 to throw in it, but if I can get better power for the same price it makes sense to go that route. So, is there an engine that will go in a W126 that will throw me back in the seat that can be built for performance as well?
__________________
Thanks,
Mark in NC

"Spark plugs?...We don't need no stinking spark plugs!"
1985 300SD "Der Silberne Schlitten" 420,000 mi


Wish these were diesel:
2003 Ford Club Wagon 130,000 mi
Reply With Quote
  #2  
Old 07-22-2015, 07:28 PM
Registered User
 
Join Date: Feb 2011
Location: Modesto CA
Posts: 2,749
Quote:
Originally Posted by mach0415 View Post
Hey all,
I have a 1985 300SD and it has over 400K miles. The OM617 is starting to get tired, but is still fairly reliable. I have had the car for 8 years and have grown attached to it. I am considering rebuilding the engine or finding a lower miles 617 to throw in it, but if I can get better power for the same price it makes sense to go that route. So, is there an engine that will go in a W126 that will throw me back in the seat that can be built for performance as well?
This would seem to be a distinction without a difference.

What "performance" is desired that is different from strong acceleration?
Reply With Quote
  #3  
Old 07-23-2015, 07:08 PM
mach0415's Avatar
Diesel Weasel
 
Join Date: Mar 2010
Location: Lawndale, NC
Posts: 648
Strong lower end acceleration from torque as well as upper end hp.
__________________
Thanks,
Mark in NC

"Spark plugs?...We don't need no stinking spark plugs!"
1985 300SD "Der Silberne Schlitten" 420,000 mi


Wish these were diesel:
2003 Ford Club Wagon 130,000 mi
Reply With Quote
  #4  
Old 07-23-2015, 08:30 PM
tyl604's Avatar
Registered User
 
Join Date: Feb 2008
Location: Atlanta, GA
Posts: 3,212
Not the purpose of an SD.
Reply With Quote
  #5  
Old 07-23-2015, 11:08 PM
Registered User
 
Join Date: Apr 2005
Posts: 204
This is silly. Any engine will go in there. It is only a matter of money.

Sent from my SAMSUNG-SM-N910A using Tapatalk
Reply With Quote
  #6  
Old 07-24-2015, 11:17 AM
KarTek's Avatar
<- Ryuko of Kill La Kill
 
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,256
An OM606 is probably your best bet. It's as close to "bolt in" as you could get aside from simply replacing the OM617.

I believe the 606 can be installed using mostly 603 hardware and fabbing custom intake and exhaust connections.

For performance, the 603 pump can be built and installed on the 606 but this is where the big money comes in. A 606 with a stock 603 pump will definitely not "throw you back in the seat"..
Reply With Quote
  #7  
Old 07-24-2015, 11:21 AM
Registered User
 
Join Date: Aug 2011
Location: Carolina
Posts: 1,376
G'head and put one of these in there.

5.0L 4V Aluminator XS Crate Engine M-6007-A50XS - FordRacingPartsByDonWood.com
__________________
Current fleet
1992 300D "IceBerg"
1984 300D "Blues Mobile"

1978 300CD "El Toro" Gone on to be born again
Reply With Quote
  #8  
Old 12-10-2015, 12:18 PM
Registered User
 
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
Drop in a 3:92 Diff from a 220D (think that is what they had) and it will get you off the line and
push you back into the seat.
Quicker off the line, but your top end will suck along with fuel mileage.


Charlie


sent from my pos computer
she`s ready to blow.
__________________
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
Reply With Quote
  #9  
Old 12-10-2015, 02:45 PM
Registered User
 
Join Date: Nov 2015
Location: Lacey Wa
Posts: 90
I have an 81 300d that has a broken odo at 230k (I have put about 100k more on it and was broken before I bought it). It has been a great reliable daily driver, but I can tell it will need an update at some point. The reason I bought the car was it was cheap, reliable, easy to work on and got pretty decent mileage.

I have always told myself if the engine gave up the ghost that I would put a small block v8 in its place, for a fun project car. Mind you this is not a prestine car, its pretty much a beater with crappy paint(although the interior is nice). Pretty sure it has been parked outside it's entire life, and was owned by a kid at some point, since there is crappy speaker wires going to the trunk under the floormats.

I always just thought it would be fun to have a sleeper benz, although it would require a lot more $ than the car is worth.

If it was a nice car I would just look for another 617, maybe a turbo? Maybe change the diff also?
Reply With Quote
  #10  
Old 12-14-2015, 12:13 PM
oldsinner111's Avatar
love all animals
 
Join Date: Nov 2008
Location: bristol,tn
Posts: 5,457
before you junk motor,I've see alot of these motors with over 599'000 miles,and car for sale.
__________________
usaf vet,dumb ass, Jerry Springer,and Maury 2020, no more unwed mothers, on public aid,free birth control
Reply With Quote
  #11  
Old 12-02-2016, 02:26 AM
Registered User
 
Join Date: Mar 2016
Location: San Diego, CA
Posts: 55
If it's still running for now, I would start looking for a lower mileage wreck. I saw one about a year ago going for $200 and it sat on CL for a while. Still kicking myself. But anyway, if it still drives for now you have time to find a deal on a replacement engine. Put the money you save into doing some of the performance mods written up on this forum. Less work than trying to transplant another type of diesel.

As for the sleeper, how about engine and transmission from a panther platform ford? (I. E. crown vic, grend marquis, town car) Lots of them out there and surprisingly comparable fuel economy to the 617
__________________
'83 300D turbo diesel (334k daily commuter)
SOLD '80 240D 4 speed manual, #2 piston pitted from crushing a 10mm nut. Running it 'till it burns through.
'78 F-150 300cid 4spd od (with my great unkle's original sales receipt)
SOLD '66 Ford P-350 delivery truck (almost driveable)
'49 Dodge B1D (1 ton Pilothouse era truck) not running but all there, candidate for om617 and 4x4 conversion when money permits.
Reply With Quote
Reply

Bookmarks

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 01:48 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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