what do i need to convert a prefacelift e30 m20b20 to 2.5

[wks79]

hi guys ,
can anyone tell me if i need to remove the dash on the prefacelift car ,
when converting to m20b25 motronic engine ?

my current engine is m20b20 ljetronic. (manual)

already found a donor car which is a 4door e30 with m20b25 motronic (manual) engine.

what do i need.

i was told that my current 2.0 gearbox works fine with the 2.5 engine.
pls advice .

cheers.

[Brianmoooore]

What on earth makes you think that the dash may need to be removed for an engine conversion?
Just a straight swap - no problems whatsoever.
TBH, the more of the 325 you can transplant, the better. Gearbox, diff, prop, suspension and brakes are all well worth fitting.

[wks79]

What on earth makes you think that the dash may need to be removed for an engine conversion?
Just a straight swap - no problems whatsoever.
TBH, the more of the 325 you can transplant, the better. Gearbox, diff, prop, suspension and brakes are all well worth fitting.

thanks 4 the heads up Brian .


what about the wiring then ? the car is a ljet engine now .

[Brianmoooore]

Engine loom won't connect straight up because the engine loom plug/socket (on the bulkhead, beside the fusebox) is different.
Either the plug on the engine loom needs to swapped for the early one off the old loom, or the socket on the bulkhead needs to be changed for the newer type.
You already have the plug to swap, but neatest is to change the socket for one off a facelift scrapper. All the wiring can be spliced inside the fusebox.