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 12-31-2020, 10:44 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
w124 and the OM603

I was wondering...

I have a 124 with the OM602.962. If that engine were to fail, what kind of PITA would it be to swap in an om603, like was used in 1987?

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
Reply With Quote
  #2  
Old 12-31-2020, 11:46 PM
Registered User
 
Join Date: Feb 2003
Posts: 278
Quote:
Originally Posted by rrgrassi View Post
I was wondering...

I have a 124 with the OM602.962. If that engine were to fail, what kind of PITA would it be to swap in an om603, like was used in 1987?
Should be a straightforward swap as long as you have the injection pump along with the engine.

The 602 962 looks to have similar intake routing as the 603 turbos, unlike the NA cars that have the air cleaner positioned near the intake manifold.
Reply With Quote
  #3  
Old 01-01-2021, 12:33 AM
Registered User
 
Join Date: Nov 2009
Posts: 186
You already have the superior engine. The 602 is the spiritual successor to the 617.
Reply With Quote
  #4  
Old 01-01-2021, 10:52 AM
Registered User
 
Join Date: Nov 2018
Location: Dallas, TX
Posts: 395
The swap shouldn't be difficult, my car had it done. There are some electrical differences that you need to be careful about (Aux fan controlled by a sensor and not a switch for example).

Quote:
Originally Posted by R.Diesel View Post
You already have the superior engine. The 602 is the spiritual successor to the 617.
Lol.
Reply With Quote
  #5  
Old 01-01-2021, 11:35 AM
Registered User
 
Join Date: Apr 2006
Location: South Florida
Posts: 467
Quote:
Originally Posted by R.Diesel View Post
You already have the superior engine. The 602 is the spiritual successor to the 617.
Agreed. The 602 (non turbo) is always found at the top of longevity of engines lists.
__________________
'83 SD, 2x '85 SD
You are entitled to your own opinions, you are not entitled to your own facts.
Reply With Quote
  #6  
Old 01-01-2021, 11:52 AM
μολὼν λαβέ
 
Join Date: Nov 2020
Location: USA
Posts: 93
If you're going to the trouble of an engine swap, why not go 606 superturbo? 606 bolts right in, add a 7.5mm pump and upgraded turbo and you have a 400 hp monster that still returns 30+ mpg. That's what I'd do anyways. Just curious, why the 603 instead?
__________________
Current fleet:
1998 E300 turbodiesel
2008 E320 bluetec - leaky oil cooler seals replaced
2012 S350 bluetec
2015 GL350 bluetec

Sold:
1996 Passat TDI
1997 E300 diesel
Reply With Quote
  #7  
Old 01-01-2021, 02:36 PM
Registered User
 
Join Date: Feb 2013
Posts: 704
Quote:
Originally Posted by argon3030 View Post
If you're going to the trouble of an engine swap, why not go 606 superturbo? 606 bolts right in, add a 7.5mm pump and upgraded turbo and you have a 400 hp monster that still returns 30+ mpg. That's what I'd do anyways. Just curious, why the 603 instead?
Far cheaper (junkyard price vs $1500-$3k), don't have to worry about a stronger transmission, no stuck glow plugs, etc.
Reply With Quote
  #8  
Old 01-01-2021, 03:36 PM
Registered User
 
Join Date: Aug 2019
Posts: 949
Quote:
Originally Posted by 83w126 View Post
Far cheaper (junkyard price vs $1500-$3k), don't have to worry about a stronger transmission, no stuck glow plugs, etc.
$3k would be just for the pump and a controller for the 722.6
Reply With Quote
  #9  
Old 01-01-2021, 03:47 PM
Registered User
 
Join Date: Oct 2004
Posts: 4,177
I've been daydreaming about a 647 swap into a 124 300D 2.5 Paired with a 722.6, would be a hell of a combo.
__________________

90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE
104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff
Reply With Quote
  #10  
Old 01-01-2021, 03:51 PM
Benzguy300
 
Join Date: Dec 2006
Location: Fontana Ca
Posts: 1,573
Quote:
Originally Posted by argon3030 View Post
If you're going to the trouble of an engine swap, why not go 606 superturbo? 606 bolts right in, add a 7.5mm pump and upgraded turbo and you have a 400 hp monster that still returns 30+ mpg. That's what I'd do anyways. Just curious, why the 603 instead?
Cheaper and you can always super turbo the 603
Reply With Quote
  #11  
Old 01-01-2021, 05:47 PM
Registered User
 
Join Date: Feb 2013
Posts: 704
Quote:
Originally Posted by christuna View Post
$3k would be just for the pump and a controller for the 722.6

You could run a stock OM603 pump and 722.3 or manual probably but yeah that's also a good point. I have 3 #22 heads sitting on the shelf too so that kinda helps with the worst of the OM603 issues for me too.
Reply With Quote
  #12  
Old 01-01-2021, 10:20 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
I was just curious. The swaps do sound like fun, though.
__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
Reply With Quote
  #13  
Old 01-01-2021, 10:56 PM
Registered User
 
Join Date: May 2009
Location: The slums of Beverly Hills
Posts: 8,065
Just make sure to find a 603 with a good cyl head.
__________________
CENSORED due to not family friendly words
Reply With Quote
  #14  
Old 01-02-2021, 01:49 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
#22 head, as I recall.
__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
Reply With Quote
  #15  
Old 01-02-2021, 03:50 PM
Benzguy300
 
Join Date: Dec 2006
Location: Fontana Ca
Posts: 1,573
Quote:
Originally Posted by rrgrassi View Post
#22 head, as I recall.
#17, #18, #20, and #22 are the best heads for a 603 engine

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 06:08 AM.


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