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#1
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E420 (124.034) optional transmission?
Greetings,
With my car starting to show it's age (not like a fine wine), I am reviewing options for a rebuilt transmission and new rear differential. The stock 4-speed transmission in my 95 E420 is the 722.366; given the differential plans and subsequent driving habits, I want the replacement to be over-engineered to handle stress. Has anyone transplanted a rebuilt 722.370 transmission from the 5-litre platforms into a 400E/E420? Would there be any measurable benefit (stronger widgets) to doing so? Copy of the ATSG manual is inaccessible at the moment. Thanks in advance, -DM
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1995 E420 SE black/black 2004 Volvo V70R AWD |
#2
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The 722.3 transmissions are all simular in design, starting in 1981 here in the USA.
The only trans designed for any more TORQUE than your transmission is from the V-12 powered cars & they won't bolt to the V-8. How many miles are on the car? Transmissions & differentials should last the life of the car IF they are properly maintained.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Quote:
The car is crossing 162k miles, but has been well-maintained for the past 30k miles that I've owned it. Transmission shifts hard when cold (could be sticking valve) and demonstrates a nasty flare when the modulator was set past the halfway mark. I suspect worn clutches instead of the usual vacuum problems. The engine is slow to reach max speed when the kickdown switch is engaged, and occasionally "bogs" a thousand RPM after it does. The differential mounts and flex disc are in great condition, yet the rear end occasionally "slams" into gear. I have read this could indicate pinion lash requiring a differential rebuild. One of those cases where I either pay up front or have my wallet shredded to death by a thousand paper cuts ;-) What do you think? -DM
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1995 E420 SE black/black 2004 Volvo V70R AWD |
#4
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i don't u can swap it from the 500E and such because the housing is also wider
i remember reading thats the reason the 500e has only 2 seats in the back |
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