After looking for a 5-speed tranny for my W123 for several years with no luck whatsoever, I decided to go down the transmission adaptation road. I found some really useful data created by Dropnosky (at STD forum) of a W201 transmission modification he did for his 61X application. However, since I'll be going through all the bellhousing cutting/welding process, I have decided to go for the big fish! Therefore, I bought a W203 C230 Kompressor 6-speed manual transmission and gear selector. The transmission code is 716.648. I have several concerns though.

W123 1983 240D Manual transmission fluid. 1983 Mercedes W123 240D 4 Speed 285,000 on. Mods so far: Fram 8038 paper filter, 4 brake light mod, Gen II.

This transmission has no mechanical speedometer output, so I need to figure out a way to make my speedometer work. Antoine Clamaran Take Off Original Mix Contest. Also, I have to figure out a way of adapting the output flange of a W123 tranmission to this transmission, so I can use the original flexdisc intended for my car.

I'm waiting for the 6-speed to arrive, so I can do a side by side comparison with a 4-speed. Any thoughts, tips or advice you can share with me will be highly appreciated! Bolest Kao Put Do Izlecenja Free Download on this page. Happy driving!

I just poked around amazon and turns out they actually make gps speedometers; primarily made for boats though but would still work in a car. There's an IPOD gps speedo app too.oh my, i think you might be able to take one of those gps speedos apart and stick it in the back of your instrument cluster with the MB factory needle attached to it and make it look totally stock (just nerdy thinking on my part, the actual gps receiver would have to mounted somewhere in the top of the dash or perhaps on the sun deck, though with modifications i bet it will work). You can bet I will take lots of pictures!

I've learned so much from the forum in the past years, that documeting the process and sharing it with you is the least I can do to pay it forward. Regarding the speedo, the GPS idea sound pretty good. I've been reading about the electronic speedometer that the 81 300TD used and it seems this is a good 'factory' option. However, I need to find out exactly how that system worked. I know there was some sort of magnetic sensor in the output shaft of the tranny in that particular car. I just need to figure out how to set up that sensor in the 6-speed tranny and wire it into an electronic speedometer.

Besides this, I need to find out the diff gear ratio that particular car had, so I can replace the faceplate of the speedo to get an accurate reading based on my current diff ratio. Playstation 3 Super Slim 12gb Jailbreak. Anyone with some advice on this setup? That's going to be a tough one. Perhaps I can adapt the speedo mechanism of a W126 behind the faceplate of a W123 speedometer. However I would need to know which sort of input signal it requires to work. The good thing is that since I'm going to need to modifiy the output flange in the 6-speed tranny, I can weld a splined wheel on the flange to work as a pulse generator for the speedometer sensor.

However, I need to know how many pulses per flange revolution where used in the factory setup. Anyone has a 1981 300TD Electronic Speedometer for sale? If not, at least the part number to try to find it somewhere? I tried looking in the EPC, but without an specific VIN, I get several part numbers and the description does not specify if its electronic or not. Regarding the final ratio, currently I have the 3.46 ratio, but I guess I'll have to change it if I happen to be able to get a speedometer funtioning accordingly. I knew the transmission cutting/welding was going to be the 'easy' part and the rest of the details would be the culprit. You would be best off figuring out pulses per mile for the old system, then translate that into a number your car can generate (tire revolutions per mile x gear ratio).