Transmission Interchange/300D Trans In A 230
 

W123 300D trans into a w123 230. Will that work?

No they won't interchange. The transmission from a 190E will interchange with the 230E they use the same engine

Thanks!
 

Much appreciated.

But a 230 (not E) uses the older M115 engine, not the M103. A 615/6/7 transmission might bolt up or it might be a matter of swapping transmission adapters. Good luck with your search.

Sixto
83 300SD
98 E320 wagon

If you're talking the older M115 engine I think the starter is on the opposite side of the OM61X engines so it won't even bolt up.

Starter on the M115 is on the right hand side as is the M617. The problem will be the transmissions have different shifting patterns due to the difference between the torque curves of the engines. The M617's transmission will shift much too early for the M115.

Frank Reiner says you can transfer the valve body from the gasser 123's into the diesels to make it work. Of course this means you'd need to have a separate transmission to do the swap. Seems a bit redundant though, if you already had a gasser trans why would you be installing a diesel trans into the car?

I'm in a position much like yours. I have a 300CD with a trashed engine and I have a good spare M110. Trying to decide on whether I want to use the engine I have or wait until I find a cheap trashed SD and install the entire turbo engine.

Oh cock!

(As that long haired aging girl on that ex-BBC program might say)

Wouldn't the governor also be calibrated for Diesel rpms?

Sixto
83 300SD
98 E320 wagon

For the 722.1 transmissions I think they had a standard governor that just did its thing and this pressure was adapted / translated to "different meanings" by the valve body.

I thought that the governor for diesels was in the injection pump? As far as starter position, doesn't the plate between the trans and engine address that?

The transmission has its own governor. One function is to not downshift if wheel speed is too high.

An adapter plate won't help if the bell housing doesn't have a corresponding hump.

Sixto
83 300SD
98 E320 wagon