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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-04-2009, 01:11 AM
Registered User
 
Join Date: Jul 2009
Location: SoCal
Posts: 14
Are 124 transmission interchangeable?

Hello everybody, I am new to Mercedes diesels automobiles and would appreciate some information please. I purchased a 1987 300d with a bad transmission, the car was ran with very little fluid, and what trans fluid came out looked like mud. Are Mercedes W124 transmission interchangeable between 1987 300D and 1989 300e? I have a 722.31702 transmission in my 1987 300d and found a very low mileage wreck 1989 300E with a 722.358 transmission and a 103983 12 156859 engine. An help will be much appreciated, I was miss lead by the person that sold me this vehicle, it drove very well for 2 days then fell apart, the maintenance records receipts that were provide ended up being from another Mercedes, so know I am trying to deal with issue. I am broke and poor, so any information would much be appreciated,

Thank You very much

Reply With Quote
  #2  
Old 10-04-2009, 01:49 AM
pawoSD's Avatar
Dieselsüchtiger
 
Join Date: Oct 2004
Location: Grand Rapids, MI
Posts: 15,239
My guess is that the trans would work fine and would interchange just fine. There is a user here on the forum (bsmuwk) who has a diesel W124 trans in his gasser....and it was working fine for him.
__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 87k - mine - (OC-91,200)
'17 Metris(VITO!) - 15k - wifes (OC-17k)
'01 E320 Wagon - 159k - mine (OC-160,000)
'01 E320 - 179k - dad's (OC-182,500)
'07 E350 Wagon - 133k - dad's (OC-132,500)
'01 SL500 - 52k - dad's (OC-52,000)
'16 E400 4matic Sedan - 67k - Brothers (OC-72,000)
Reply With Quote
  #3  
Old 10-04-2009, 03:18 PM
Registered User
 
Join Date: Jul 2004
Location: NC
Posts: 1,140
the overall answer is that the V8 and I6 trans is not interchangeable; just stick with the gas I6 trans and it will fit
Reply With Quote
  #4  
Old 10-04-2009, 03:41 PM
bsmuwk's Avatar
124.051
 
Join Date: Jan 2009
Location: IL / WI
Posts: 953
It should work. Just need to swap out the tail ends of the transmissions as the diesel one is larger than the gasser one.
__________________
-Allen
Lakemoor, IL
Artisan Motorenbau
Chicagoland Mercedes Enthusiast Facebook Group: https://www.facebook.com/groups/mbclubchicago/
Reply With Quote
  #5  
Old 10-04-2009, 04:04 PM
babymog's Avatar
Loose Cannon - No Balls
 
Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,767
What is wrong with the transmission, perhaps we can help.

They are interchangeable, but:

The 300E transmissions start in 2nd gear, extremely annoying IMO. If you can find an E320 transmission for the 1st-gear-start, or another '87 300D it would be simpler.

Also, is your torque-converter good? The torque-converter will have a different (higher) stall-speed on the 300E, not a deal-breaker but you will probably lose just a little fuel mileage.

If the valve-body is okay in your 300D, that is another option, use the 300D valve-body in the 300E transmission to retain the 1st-gear start.

If I remember the gearing is also slightly different, but 4th-gear is 1:1 (minus TC losses) on both so you'll be fine there.

Last, I'm not sure where the speedometer ratio is changed for the different diff-ratio, likely in the speedometer but I'm not sure, someone else might know if this swap will affect your speedometer.
__________________

Gone to the dark side

- Jeff
Reply With Quote
  #6  
Old 10-04-2009, 04:17 PM
bsmuwk's Avatar
124.051
 
Join Date: Jan 2009
Location: IL / WI
Posts: 953
Quote:
Originally Posted by babymog View Post
What is wrong with the transmission, perhaps we can help.

They are interchangeable, but:

The 300E transmissions start in 2nd gear, extremely annoying IMO. If you can find an E320 transmission for the 1st-gear-start, or another '87 300D it would be simpler.

Also, is your torque-converter good? The torque-converter will have a different (higher) stall-speed on the 300E, not a deal-breaker but you will probably lose just a little fuel mileage.

If the valve-body is okay in your 300D, that is another option, use the 300D valve-body in the 300E transmission to retain the 1st-gear start.

If I remember the gearing is also slightly different, but 4th-gear is 1:1 (minus TC losses) on both so you'll be fine there.

Last, I'm not sure where the speedometer ratio is changed for the different diff-ratio, likely in the speedometer but I'm not sure, someone else might know if this swap will affect your speedometer.
The speedometer will be effected when the differential is changed. Changing just the transmissions won't effect the speedometer. From reading his Benzworld post, he's using 225/55 tires so he's off on his speedometer anyway.
__________________
-Allen
Lakemoor, IL
Artisan Motorenbau
Chicagoland Mercedes Enthusiast Facebook Group: https://www.facebook.com/groups/mbclubchicago/
Reply With Quote
  #7  
Old 10-04-2009, 05:22 PM
pawoSD's Avatar
Dieselsüchtiger
 
Join Date: Oct 2004
Location: Grand Rapids, MI
Posts: 15,239
Quote:
Originally Posted by babymog View Post
What is wrong with the transmission, perhaps we can help.

They are interchangeable, but:

The 300E transmissions start in 2nd gear, extremely annoying IMO. If you can find an E320 transmission for the 1st-gear-start, or another '87 300D it would be simpler.

Also, is your torque-converter good? The torque-converter will have a different (higher) stall-speed on the 300E, not a deal-breaker but you will probably lose just a little fuel mileage.

If the valve-body is okay in your 300D, that is another option, use the 300D valve-body in the 300E transmission to retain the 1st-gear start.

If I remember the gearing is also slightly different, but 4th-gear is 1:1 (minus TC losses) on both so you'll be fine there.

Last, I'm not sure where the speedometer ratio is changed for the different diff-ratio, likely in the speedometer but I'm not sure, someone else might know if this swap will affect your speedometer.
The torque converter on the 300E is a higher stall speed? What is it on the diesels? Its only 1600rpm on the M103 300E's.....too low in my opinion....
__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 87k - mine - (OC-91,200)
'17 Metris(VITO!) - 15k - wifes (OC-17k)
'01 E320 Wagon - 159k - mine (OC-160,000)
'01 E320 - 179k - dad's (OC-182,500)
'07 E350 Wagon - 133k - dad's (OC-132,500)
'01 SL500 - 52k - dad's (OC-52,000)
'16 E400 4matic Sedan - 67k - Brothers (OC-72,000)
Reply With Quote
  #8  
Old 08-29-2016, 05:31 PM
Knappy Drag Racer
 
Join Date: Jun 2008
Posts: 1,725
Hi all.

Old thread I know, but it doesn't seem right to start a new thread on this topic. Much better to just pick up where this one left off.

I too want to use a gasser's trans in an 87 300D. Reasons being:
1) The 89 and later 722.3 trans has a lower 1st gear ratio --- 3.87 vs. 3.68 --- more giddy-up out of the hole!
2) Where am I gonna find another trans for a 87 300D? (The later W124 300Ds only use the puny 722.4 trans.) I suppose a W126/W140 OM603 trans could work but, again, still too rare.

I realize that there will be WOT shift point issues to overcome. Anything else?

Is there anybody here who has actually done such a swap?

Any help is appreciated!
__________________
89 300E "Benzer1" 15.924 Uncorrected
93 400E "Benzer3" 14.200 U.C.
95 E420 "Benzer4"
92 300E "Benzer5" 16.299 U.C. Future turbo CNG
87 300D "Benzer7"
87 300D "Benzer8"
87 300D "Benzer9"
87 300D/70 AMC Javelin "Sidewinder-Benzer"
87 300TD "Benzer11"
06 E320 CDI "Benzer12"
05 E320 CDI "Benzer12A"
71 AMC Javelin AMX 401 "Sidewinder"
74 AMC Hornet 401 "C.K.10" 13.63 U.C.
74 Bricklin SV1 "Presto" AMC 360 pwrd.
Reply With Quote
  #9  
Old 08-29-2016, 05:38 PM
Registered User
 
Join Date: Aug 2011
Location: Carolina
Posts: 1,395
You could look into going with a 722.6 transmission and add the electronic controller. I hear that is a bad ass upgrade
__________________
Current fleet
1992 300D "IceBerg"
1984 300D "Blues Mobile"

1978 300CD "El Toro" Gone on to be born again
Reply With Quote
  #10  
Old 08-29-2016, 05:45 PM
Knappy Drag Racer
 
Join Date: Jun 2008
Posts: 1,725
Yes, that would be, but it's also more than I'm willing to try to tackle. This needs to be relatively cheap and simple for me or else it will never get done.

That swap would be especially nice because it would also allow me to run lower gears (higher numerically) in back for even more giddy-up!
__________________
89 300E "Benzer1" 15.924 Uncorrected
93 400E "Benzer3" 14.200 U.C.
95 E420 "Benzer4"
92 300E "Benzer5" 16.299 U.C. Future turbo CNG
87 300D "Benzer7"
87 300D "Benzer8"
87 300D "Benzer9"
87 300D/70 AMC Javelin "Sidewinder-Benzer"
87 300TD "Benzer11"
06 E320 CDI "Benzer12"
05 E320 CDI "Benzer12A"
71 AMC Javelin AMX 401 "Sidewinder"
74 AMC Hornet 401 "C.K.10" 13.63 U.C.
74 Bricklin SV1 "Presto" AMC 360 pwrd.
Reply With Quote
  #11  
Old 08-29-2016, 06:02 PM
Registered User
 
Join Date: Feb 2011
Location: Modesto CA
Posts: 3,008
Quote:
Originally Posted by 400Eric View Post
Hi all. Old thread I know, but it doesn't seem right to start a new thread on this topic. Much better to just pick up where this one left off.

I too want to use a gasser's trans in an 87 300D.
The simple solution is to install the diesel trans valve body, vacuum modulator, and governor in the gasser trans.
Reply With Quote
  #12  
Old 08-29-2016, 06:44 PM
Registered User
 
Join Date: Oct 2015
Location: Dela-where? OH
Posts: 133
Quote:
Originally Posted by Phillytwotank View Post
You could look into going with a 722.6 transmission and add the electronic controller. I hear that is a bad ass upgrade
Not to hijack, but what would something like that run for a 300E? I hope my tranny lasts forever (well, 50K more miles) but I'm considering my options in case it doesn't.
Reply With Quote
  #13  
Old 08-29-2016, 08:15 PM
Registered User
 
Join Date: Aug 2011
Location: Carolina
Posts: 1,395
Quote:
Originally Posted by Rrrockhound View Post
Not to hijack, but what would something like that run for a 300E? I hope my tranny lasts forever (well, 50K more miles) but I'm considering my options in case it doesn't.

Just did a little quick searching. Looks like a used 722.6xx for diesel can be had for about $500. All the parts for the standalone tcu setup would be about a grand. Sure there are other things, driveshaft work maybe. Probably around two grand all in maybe.
__________________
Current fleet
1992 300D "IceBerg"
1984 300D "Blues Mobile"

1978 300CD "El Toro" Gone on to be born again
Reply With Quote
  #14  
Old 08-29-2016, 10:54 PM
Knappy Drag Racer
 
Join Date: Jun 2008
Posts: 1,725
Philly, yes, it could be made to work, but again, there would be more time, effort and money than I am willing or able to invest.

Quote:
Originally Posted by Frank Reiner View Post
The simple solution is to install the diesel trans valve body, vacuum modulator, and governor in the gasser trans.
That's my thinking too but my question is has anybody actually done this? Are there any unforeseen issues with compatibility?
__________________
89 300E "Benzer1" 15.924 Uncorrected
93 400E "Benzer3" 14.200 U.C.
95 E420 "Benzer4"
92 300E "Benzer5" 16.299 U.C. Future turbo CNG
87 300D "Benzer7"
87 300D "Benzer8"
87 300D "Benzer9"
87 300D/70 AMC Javelin "Sidewinder-Benzer"
87 300TD "Benzer11"
06 E320 CDI "Benzer12"
05 E320 CDI "Benzer12A"
71 AMC Javelin AMX 401 "Sidewinder"
74 AMC Hornet 401 "C.K.10" 13.63 U.C.
74 Bricklin SV1 "Presto" AMC 360 pwrd.
Reply With Quote
  #15  
Old 08-30-2016, 08:00 AM
Registered User
 
Join Date: Oct 2015
Location: Dela-where? OH
Posts: 133
Quote:
Originally Posted by Phillytwotank View Post
Just did a little quick searching. Looks like a used 722.6xx for diesel can be had for about $500. All the parts for the standalone tcu setup would be about a grand. Sure there are other things, driveshaft work maybe. Probably around two grand all in maybe.
Thanks for checking. I assume a competent MB factory trained mechanic would be familiar with what needs to be done.

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 05:40 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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