Facelfit M20B25 into pre-facelift 320 advice...

[allstar_07]

Hi,

I've spent a lot of time searching on here but can't find a comparable thread so apologies if this is repeated.

I have a 2.5 from a 1991 cab (no cat) and want to put into my 1986 320. The 320 is jetronic with the 'd' shaped diagnostic plug. The 2.5 has ecu 0261200380 which I think is motronic 1.3. I have the loom, ecu etc for the 325 and will be using that. I'm away from the car so can't check the exact sockets etc but I want to know what I need to do to get the facelift loom etc working in the pre-facelift car? i thought I'd found some wiring notes before but can't find them now. Is the connector into the fuse box the same?

Also on a mechanical front...
Can I use the starter motor and exhaust manifold from the 320?
Do i need the oil cooler? Will the 320 exhaust restrict the 2.5 significantly?

I need to get a manual box...I like the idea of using a 320 box (for the ratios) or is the normal 325 box the way to go?

Thanks

[allstar_07]

Anyone? ;)

[town325i]

If you have all the facelift bit it will plug and play you can use the 320 exhaust but it will restrict the flow a fair amount and slow the car down

[allstar_07]

Oh ok so no wiring issues then...maybe i was reading about putting pre-facelift into facelift then.

So I can use the 320 manifold but just better to use 325 exhaust? Starter the same?

[allstar_07]

cheers will, I'll check on all the connections when I'm with the car and make sure.