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Originally Posted by bkc
* My local shop is scheduled to do the physical alterations for the motor and tranny to fit, sublet the fuel tank reseal, and alter/replace the propeller shaft and exhaust, starting next week sometime.
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Why? You should be able to do this with all stock parts.
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=== questions so far
* Will the 722.500 tranny work fine with the om602? They have the same bell housing and bolt pattern, so they physically fit. The 722.500 torque converter has a larger pump bore on the tranny side, but otherwise seems identical to the 722.418 (at least from the outside). Can I just plug the vacuum line from the om602 injector pump in where the vacuum line from the m104 went on the .500 tranny?
* How do I get the HGS (TCM) working with om602/EDS output? Is the diesel speed sensor (144/rotation) signal to/from the EDS compatible with what the HGS/TCM wants? What do I use to indicate engine load to the HGS?
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Why wouldnt you keep the 602 eng and trans together? You will need to swap EDS over.
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* Is the weight/balance going to be fine with the tranny about 4 inches forward of original? (om602 is shorter, but nearly fits existing mount locations by being about the same place from the front as the m104) I know this will require moving the tranny mount stuff.
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Of course the ratios will be off some but shouldnt matter.
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* Will be modifying the engine mounts crossmember, as the om602 sits too high and doesn't *quite* fit the existing mount points, hopefully won't have to modify too much else physically besides that and the tranny mount.
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Why arent you using m103 mounts?
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* The preglow system seems pretty straightforward to integrate into the starter circuit. But, how can I add the vacuum valve to stop the motor? Would prefer a mechanical method, like the w124, so the motor will keep running even if the electrical system fails (saved my butt in the w124 shortly after we originally bought it)
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Can you not use the 124 ignition?
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I have the manuals for w124, r129, and w140, plus WIS. I also have access to Mitchell's OnDemand5. My local shop is not expert in Mercedes, more American and Asian cars. They do handle major projects though and have a machine shop for fabrication.
Thanks for any advice or even just moral support!
-bkc (Lynnwood, WA)
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This is not the first 129 swap. Google around and find ppl with good experience.