Quote:
Originally Posted by sixto
I don’t know what you’ve heard or from whom. The 722.3 transmission behind a 603 is solid when properly maintained. 200-250K miles might be their lifetime. The 722.6 transmission behind a 606 turbo can go longer. I don’t know if these 722.6s have an iffy bushing like gasser 6s or a roller bearing like gasser V8s and 6s from 2000. The 722.6 can be more particular about maintenance and fluid level.
The 606 turbo has more electronics and throttle by wire that can be tedious to tansplant but you can swap in a 603 IP for mechanical control. The 603 IP would have to be modified to flow the fuel levels of the original 606 IP. 603 doesn’t have an O2 sensor.
The 603 only has a MAF for emission controls. Unlikely you’d carry these over in a swap so no MAF to worry about. 603 has no TPS or VSS for engine control or brake signal for the transmission.
You seem pretty down on these drivetrains to be thinking of a swap. I would think an original MB application is as reliable as the drivetrain can get. Once you take it out of its element, reliability can only suffer.
Sixto
98 E320 wagon
02 C320 wagon
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I'm pretty familiar with the 603 having owned one for a good amount of years and done a fair amount of work on it during that time. Great mechanical engine in my opinion and simple to work on. I'm not as familiar with the 606. From what I've read, the rack is solenoid controlled, but other than that the IP is still mechanical. It seems the rack and fueling via solenoid should be easy enough to control apart from the ECU via another controller. I'm not at all educated on how the solenoid is controlled, but I would think PWM or a varying voltage or current supply. I wonder where it gets it's feedback for governor control.
The transmission electronics are what I'm more concerned about. What would have to come with the transmission to allow it to shift and function as intended?
I am no longer in a place where the w124 or w210 are all that useful to me. I would be putting them in a Suburban (not the one I currently own). Being able to haul my family and cargo (building materials, wood, etc) are important at this point.