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right, so lets say for arguements sake I am insane and like an uphill struggle. Im was sitting there last night and I think I may have come up with a way to make a 3.0 m20. Am I right in thinking that the 2.7 was bored out to 2.7 and the 2.8 used a stroker crank as well? say out of a 325 diesel or if your pockets are deep the shrick one.

3.0l m3 use the 3.0l m54 or s52b30 cranks lots of kits in the us lookup ireland enginering

Jason

cheers for that jason but I havent got the funds to buy an m3 engine just now. lol Actualy, what Im thinking of doing here is re-engineering my m20. I have access to machine shop and 2 good scrap yards so I will be bartering and machining this myself.
What I have in mind is increasing the stroke and boring the engine as far as is safe to do. Then I am going to machine a spacer between the head and the block to increase volume to 3.0. So you see this will no longer be an m20 but a whole new engine built by hand on a budget. so I need to know the largest crank stroke that can be fitted so I can calcul;ate how much extra volume I need to create.

Jason_323i wrote:3.0l m20 use the 3.0l m54 or s52b30 cranks lots of kits in the us lookup ireland enginering

Jason

Corrected my post, you need the m54 crank from a e46 330i or a e39 530

ahhh....now I get it mate cheers

now all I have to do is wait for one to crash and go to my mates scrap yard...hehe