What can be done, short of the obvious? - PeachParts Mercedes-Benz Forum

strelnik · #1 09-25-2009, 07:49 PM

While I was sick, a guy working on my car installed another auto trans because the one I had planned to use no longer would shift into third gear, despite his best efforts. He is very competent.

He proposed to use a 300D non turbo to replace the 240D 722.117.

Since the install, the car's shifting seems to take an awful long time for third, despite flooring it and waiting for the trans fluid to warm up.

The car is safe to drive (right now, it's having some other issues, but I had originally planned to keep it for my son, now I'll sell it as extra). However, I love the feel of my 722.117 attached to my 240D. The 240D is peppy for one of the NA diesels, and the trans shifts crisply and decisively. I am concerned that the long shifting into third will lose the sale.

I always believe that the performance of the car is what sells it, in addition to certain niceties. I plan to offer the buyer a complete other color-coordinated MB leather interior if it will help to sell the car, because I am short on space and the guy who is letting me use space in return for other favors is occasionally getting testy and wants me to move the car, which has also leaked AT fluid on his driveway (which I had to pay to get cleaned asap.).

Long story short:

1. would a 722.117 torque converter be any smaller, turn faster and impact the pump and the shifting speed? I'm theorizing here, based on MoPar parts.
2. What about modulator replacement? Supposedly this modulator can't be adjusted further.
3. What about different size vacuum line?

I have unearthed a 240D transmission, used and purportedly working, but I hesitate to insist that this one be installed since the other job really isn't doing it for me.

All suggestions are welcome, extra cookies and gold stars for the best ideas.

Thanks,
S

PS Results of my mountain climbing radioactive nude stress test revealed next Wednesday evening.

PG-13 rating.