M20 to M40 Swap Help

[tcblenny]

Hey so I'm new to all this engine swap business but I was looking for some help on swapping out my stock m20 engine from an 87 coupe to a 1997 318i engine. I've seen posts but its usually the other way around...the e36 engine is complete with engine,transmission,harness,ecu etc..
Any help would be appreciated!! Thanks!!

[tcblenny]

Sorry if this is in the wrong section I wasnt too sure where it should go

[R1dd1ck913]

Why are you wanting to get rid of the m20?

[tcblenny]

For better gas mileage basically. I'm not looking for anything else from it.

[uturn]

I have several e30s with different engines. M42, M20 and M30. Getting about the same mileage between all of them. I think your money would be better spent on maintenance. If you're set on doing it, nobody will stop you. Good luck!

[lukeADE335i]

Would be easier to sell the car you've got & buy a 4 cylinder unless your car is super clean and impossible to find another in similar condition.

[curtis_luu]

M20B27 or B25?

[tcblenny]

The m20b27. I was hoping for maybe a guide with what parts your going to need to replace to accommodate the engine instead of asking a ton of questions .

[SpecM]

m40 or m44? ... I doubt either will get much better fuel economy than an b27 in good order

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