Shouldn't be any major problems....I'd have thought your 146 would probably be plastic top so an easy swap. If its an alloy top, a bit more to it, but essentially swap all manifolds, the exhaust cam pulley and cam sensor and a few other sensors, and it should be fairly straightforward. You'll need to use the 156 clutch assembly, and if your 146 doesn't have aircon you might have a bit of a faff with bracketry off the 2.0, but I don't think it should be insurmountable. I think the 2.0 ECU will run the 1.8 without any real issues.

 

Thanks rgwm for the the reply. The 146 is plastic top type and does have air-con so as you say hopefully a fairly easy swap, do you think the 156 flywheel is the way to go or can the 146 flywheel accept the 156 clutch?
What is the difference between the 1.8 & 2.0 exhaust cam pulley / cam sensor?
What do you think about the MAF (use the 156 or the 146 one)?
Lots of questions I know but thanks in advance

 

Your cam sensor is the same on both engines as they are both plastic top. The early ally top engines have a different cam sensor. Use the 156's original MAF, the 156's original ECU, infact use as many of the 156's original sensors as possible and you'll be fine

 

Yeah, what he said.....:lol:

To be honest, I'm not sure about the flywheel.....I'd be inclined to use the 156 flywheel and (preferably new) clutch, just to be sure, but the actual flywheels may be interchageable.....

 

Thanks for the advice Gents, we'll see what happens with the removal / replacement of said engines!
I fear may be back with more questions tho...
Cheers for now