Nope. The gearing on all MBZ transmissions (well ones we generally deal with) is the same. The only thing that changes is the gearing on the rear diff and the gearing in the speedo itself.

si just need the speedo from an 85 300d ...does anyone know what other car had the speedo for a 2:88?

2.88 in a 123 was a 85 thing only. 126's do have 2.88 but I believe the have electronic speedos.

I think your flex discs are incorrectly installed. The engine rotates clockwise and the trans flange should be dragging, not pushing, the flex disc around by the thick part of the flex disc. Same with the diff.

have you tried filling your diff with oil?

Makes sense.... but I set it up in the original factory position and looking at other pics on the forum it is the same.

New disk
http://www.peachparts.com/shopforum/...0&d=1173127379

Original Setup.
http://www.peachparts.com/shopforum/...9&d=1173127367

Note same position.



Other pics from the forum and notice position of flex disk.

From R Leo
http://www.peachparts.com/shopforum/...8&d=1078696048

http://www.peachparts.com/shopforum/...2&d=1080840166


From Brandon314159

http://www.peachparts.com/shopforum/...5&d=1139284088

http://www.peachparts.com/shopforum/...8&d=1139284112

From Diesel Giant
http://www.dieselgiant.com/flexfailure46.JPG




I am actually taking down a tranny today in a friends 300D, I can take more pictures.

Yes flush and fill with Mobil1 synthetic, didn't do much with the noise..

I will be swapping new one out with my recently found 2.88.

Searching for a 3.69 diff.
 

I have a 3.07 in my 300TD and with the mountain driveways we have to climb, I'd like to give the wagon some mountain goat gears. We rarely ever go 70mph. There is never a strong enough breeze at our back. :P

If anyone has one, thanks in advance.