320i engine upgrades

[Tuki]

.............

[mark247]

m20b25 conversion?

[nando]

other than the head, you can't do much - AFAIK the block is unique and it can't be bored out very far.

[Borat]

other than the head, you can't do much - AFAIK the block is unique and it can't be bored out very far.

nope, similar to B25 and B27 blocks but is missing some extra cooling channels.

best thing to do is 2.5 conversion or get the block from a 525e or 325e and whack your head on.

[digger]

alot of the UK guys use the 80mm bored blocks and bore them to accept 84mm pistons from the m20b25 so it can be done