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M40.1.8 to M20.2.5
Posted: Tue Jan 27, 2009 1:54 am
by konflik1
how difficult is it to proform this swap and what are the parts needed?thanks in advance
Re: M40.1.8 to M20.2.5
Posted: Tue Jan 27, 2009 3:56 pm
by tomson
Quite straight forward you will need;
Engine (complete), gearbox with shift linkage, exhaust, rad, oil cooler, ECU, & prop.
This lot will get you going you can then also upgrade the brakes, diff, ARB's & suspension to 325i spec.
As luck would have it I have all the above available if you are interested

Re: M40.1.8 to M20.2.5
Posted: Tue Jan 27, 2009 5:11 pm
by Brianmoooore
tomson wrote:then also upgrade the brakes, diff, ARB's & suspension to 325i spec.
Already done, apart from the diff, if the 318 happens to be a cab or a touring.
You will need to add mounts for the coolant resevoir bottle, and modify/change the mounting bracket for the air filter.
Re: M40.1.8 to M20.2.5
Posted: Wed Jan 28, 2009 1:35 am
by konflik1
thanks so far.i am in barbados and looking to do the swap soom just gathering parts.
Re: M40.1.8 to M20.2.5
Posted: Wed Jan 28, 2009 3:02 pm
by tomson
Brianmoooore wrote:tomson wrote:then also upgrade the brakes, diff, ARB's & suspension to 325i spec.
Already done, apart from the diff, if the 318 happens to be a cab or a touring.
True but the front springs will still need changing to 6cyl items....
Re: M40.1.8 to M20.2.5
Posted: Wed Jan 28, 2009 3:04 pm
by tomson
konflik1 wrote:thanks so far.i am in barbados and looking to do the swap soom just gathering parts.
Easiest thing for you to do would be to buy a complete 325i to strip for the bits you need.....
Do you have a saloon or cab? You wont have a Touring unless it's been imported.
Re: M40.1.8 to M20.2.5
Posted: Thu Jan 29, 2009 1:54 am
by konflik1
i have a saloon.there is one touring in barbados and there are not that many e30's still alive here for me to get a donor car.will the m40 gearbox fit the m20 engine
Re: M40.1.8 to M20.2.5
Posted: Thu Jan 29, 2009 10:08 pm
by tomson
Not sure in honesty but I doubt it.....
Re: M40.1.8 to M20.2.5
Posted: Thu Jan 29, 2009 10:23 pm
by Alex
sell it and buy a 325i
unless your attached to the car
