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  #1  
Old 08-24-2019, 02:42 PM
Innocent Bystander
 
Join Date: Oct 2016
Location: AZ
Posts: 149
W123 early/late

Can anyone confirm the year that changed from early to late type?


Early was mostly mechanical everything and late was mostly vacuum everything. Specifically looking at auto trans (240d). Since the question of installing early trans into late car was inconclusive, I may have to buy a used trans and need to know what year started the "late model" vacuum trans.


The early model I have is 722 117. I dont know what the late model one in the car is, may be a 117 or 118, but it is vacuum controlled.

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  #2  
Old 08-24-2019, 03:01 PM
okyoureabeast's Avatar
Rogue T Tolerant
 
Join Date: Jul 2009
Location: North America
Posts: 1,675
If you lived in Europe, I'm pretty sure a fully mechanical as in manual climate control system could be optioned for every model year. They even had a dual system which is mind blowing to me (pun intended).

In the US, I believe only the 240D could be optioned with a 4 speed manual. I think it always had manual climate control but someone will need to confirm that for me.

Beyond that, everything was more "behind the scenes". 1985 had a special carry over year with a different auto trans and a 2:88 differential.

That's about it.
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Old 08-25-2019, 09:19 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,632
1980 may have been the update year. The AC was moved down in the engine compartment along with other things....perhaps oil filter relocated. The later years are a significant improvement over the early ones.

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