Re: [diesel_mercedes] I Guess...

 



Thanx Mark ;

Me , I love those old Hydromatics , the dual coupling ones were called " Dual Range " by GM Dealer trained Mechanics when I were a laddie .

My '54 Pontical Super Chief had a Hydromatic and FlatHead InLine 8 cylinder engine , it moved out O.K. and just _hummed_ along # 80 + MPH on the Open Road .

-Nate
       Mark   wrote :

Naw, not really.  Certainly not from the 722.0/1/2 (the four bolt pan, introduced with the W116 "S-Klasse" in 1972).

A case could be made that their first, in-house automatic, introduced in 1961 for the W111/W112 and used in the W108/109, W113 (SL) and the legendary W100 series, was more like the original, cast-iron Hydra-Matic (as opposed to the later alloy "Hydramatic").  It used what DBAG called a "hydraulic start-up clutch"; not a torque converter, but more like the fluid coupling the Hydra-Matic used.  Like the old Hydra-Matic, the "start-up clutch"/fluid coupling was largely out of the power picture in the two higher gears, thus aiding both performance and fuel mileage.  

Previous to all this, a Borg-Warner unit was offered on the 300-series (VERY rare in these cars), as well as the ill-fated "Hydrak" system, a fluid coupling mated to a manual transmission.

An interesting summary of MB's automatic offerings can be found here:

http://media.daimler.com/dcmedia/0-921-657490-1-1381889-1-0-0-0-0-1-11694-0-0-1-0-0-0-0-0.html

Mark
From: "vwnate1@... [diesel_mercedes]" <diesel_mercedes@yahoogroups.com>
To: "diesel mercedes" <diesel_mercedes@yahoogroups.com>
Sent: Thursday, October 16, 2014 7:04:28 AM
Subject: [diesel_mercedes] I Guess...


I now can hear the whining of the tranny gears as it works its way up and down , I was recently told the Mercedes four speed automatic was heavily cribbed from GM's most excellent Hydromatic , is this true ? .


-Nate

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