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

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-09-2008, 08:10 PM
jef d's Avatar
Registered User
 
Join Date: Jul 2006
Location: Westchester NY
Posts: 282
Question What is the differance between 603s ?

Hi what is the differance between 1987 300sd and 1993 300sd than there is the S350 3 differnt motors or what ?I get 3 differnt storys. thanks J

Reply With Quote
  #2  
Old 03-09-2008, 08:16 PM
ForcedInduction
Guest
 
Posts: n/a
Yes, three different engines.

1986-1987 3.0L OM603.96x, known for it's risk of cracking the head.
1990-1995 3.5L OM603.97x, known for randomly bending connecting rods and extreme oil consumption afterwards.
1990-1995 3.5L OM603.97x, rebuilt/replacement by Mercedes, far less likely to have rod issues.

Last edited by Brian Carlton; 03-09-2008 at 10:05 PM.
Reply With Quote
  #3  
Old 03-09-2008, 08:58 PM
jef d's Avatar
Registered User
 
Join Date: Jul 2006
Location: Westchester NY
Posts: 282
I know, I love the 617 also ! but what cars had the better 603's ?
Reply With Quote
  #4  
Old 03-09-2008, 11:50 PM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,611
IMHO, anything with the 3.0 liter version, or anything before 1990, IIRC. I personally would not trust even the factory rebuilt 3.5 version.

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.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
  #5  
Old 03-10-2008, 12:12 AM
Unofficial wormcan opener
 
Join Date: Dec 2005
Location: Ashland, MA
Posts: 2,602
Quote:
Originally Posted by jef d View Post
I know, I love the 617 also ! but what cars had the better 603's ?
IMHO any 603 with a #22 head. Others will disagree, but there are plenty of cracked ones out there. Having said that, it is still cheaper to do the top end than to replace the whole engine. So the best ones would be found in the 1987 300D/TD and the 1986-87 SDL. Those are the only years for US imports. The OM603 was used in the rest of the world until 1989, AFAIK.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss
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 02:07 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page