E30 Zone

my 318i engine passed away the other week and instead of fixing it im just going to do a 2.5 conversion for good measure.
im sure someone has asked this before but is it a straight swap?
diff? prop shaft? ecu? fuel pump?
if anyone could point me in the right direction i would be grateful
thanks aiden

exactly what i need to know also ????

engine and gubbins, gearbox, diff, rear disc conversion (?), struts, springs, shocks, ARBs, ECU, radiator, exhaust system, battery in boot conversion, front discs and pads, fuel pump, ABS system, check panel conversion, 6 pot speedo chip,

You should also do the timing belt and water pump, as well as a full service and all fluids before you put the lump in, unless you know it's been done recently.

there's probably more.....

Bottom line - just buy a 325i, it's much easier.

well i got a 2l sitting here so all i will need different is block and ecu for the 2.5 ?

as i should have all of that from mine ???

will i need the whole loom or just engine loom ?

@dombret- as you have a 2.0 already you will need "engine- engine loom- ecu- prop"

My car was 320i and I did an m20b25 conversion on it using the above, straight in and out in the car same night

For my 2.0 to 2.5 I tried using the 325 loom but it burnt out, working fine using the 320 Definitely the easier swap.

Pretty much everything OP - as topblag says, if you have a four-pot car, part it out and just buy a 325i. Or sell the chassis for whatever you can get if you can afford it. It will be cheaper and quicker.

The easier option is to fit a 318is engine. Still not a case of just bolting the new one in, but much less fuss.

@ green- it may be worth mentioning that the 2.0 ecu can be used to run a 325, just pop a 325 chip in it and happy days