Mk4 Engine Change AXP -> BCA, AHW, AKQ APE

[Stigggeh]

Hi,

First post, new to VW and looking for some advice  .  I have a MK4 with a poorly (read dead) AXP engine.  Now it appears these are few and far between so my question is this...

If I were to change from an AXP to another 1.4 (or 1.6 even) engine of a different code is there much work involved?  ECU, Gearbox? Breathers, Sensors?

Are any other codes a relatively close fit?  Looking around the BCA engine appears to be the closest match.   

Any information (large or small) would be greatly appreciated...

[jamie16v]

not all clued up on the 1.4/1.6 engine codes but i would imagine the only major difference between all the 1.4s is how they are run (ecu wise). i think if you took all the ancillieries ( alternator, manifold, sensors and loom ect) from your 1.4 engine and put them on a 1.4 engine from another mk4 (or mk3 even perhaps) then the given engine should work. dont quote me on this as like i said, im not 100% sure.