Thread: Does it go?'95/3.9 disco into '91/disco

If you are having a mechanic do it, and he uses the bits from the old engine, such as the timing case, v belt front, etc, they are exactly alike.

All rover V8 short engines are backwards compatable.
If you want to use the complete long 3.9 , there will be a lot of fiddling with different aircon comperessor fittings, hoses to radiator,pulleys etc., as the 95 will have a serpentine belt on the front.
Seeing it is a 3.5 Disco, which has the 14CUX ECU, the injection wiring etc should be just plug and play,however you probably will need a 3.9 ECU. It will probably run OK with the 3.5 ECU, but there conceivably is a danger it could lean out at high revs.
Knowing Land Rover this may not be the case however, although I have a 90% plus confidence level that it is.
Regards Philip A

Thanks Phillip,
I'm not frightened to have a go, ..as of this time i'll find a mechanic
and let him do the hard yards.
We'll change the ecu to the 3.9
and while i'm there i'll upgrade a few things.
She has to be reliable to do some good km's
around Australia. Thanks 4 your advice sir.
i'm grateful to anyone who replies.
Also what about the transmission.
do we have to change bell housings?