Mercedes 5 Speed Auto
#3
Race Director
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when i had my 88 S4 automatic rebuilt there literally was a 722.5 sitting right next to it....almost identical, except for about 4 more inches before the rear end.....so it would require lots of fabrication to make it fit...& the 722.5 is purely electronically controlled....unlike ours.....
But it is the same transmission that still is in all of the 65 series AMG cars with 604hp-738ftlbs!!!!!!!
The gear ratios are quite similar too, just adds a .86 overdrive
But it is the same transmission that still is in all of the 65 series AMG cars with 604hp-738ftlbs!!!!!!!
The gear ratios are quite similar too, just adds a .86 overdrive
#4
Rennlist Member
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Dinsdale, oh Dinsdale. Can you take on another project?
#5
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Are there 4 inches of room on the "engine side" in the rear transmission tunnel with the stock auto? If so, one would think if the rear end remains fixed, the longer 722.5 would fit?.....(wishful thinking).
Is the electronic control a regular CANBUS type or proprietary to Mercedes?
Carl
Is the electronic control a regular CANBUS type or proprietary to Mercedes?
Carl
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#8
Nordschleife Master
#9
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Join Date: May 2012
Location: 88 928 S4 in Dallas, TX
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when i had my 88 S4 automatic rebuilt there literally was a 722.5 sitting right next to it....almost identical, except for about 4 more inches before the rear end.....so it would require lots of fabrication to make it fit...& the 722.5 is purely electronically controlled....unlike ours.....
The 722.5 was really designed for 6 cylinder MB's and I don't think that it would be strong enough for the 928. The 722.6 however was put in the Twin Turbo CL65's and should be plenty strong. There's an outfit working on a stand alone TCU for this transmission which may provide options if you can ever make one fit. More details here:
http://www.peachparts.com/shopforum/...722-6-tcu.html
#13
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#15
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I'm slowly getting there. Been finishing up the v12 car. However I did Picked up a 86 for a test mule last month. Waiting for the 6l80e to be delivered. Our new center section should fit both auto and manual trans. Plan on doing mockups for Porsche , GM and Toyota engines.