ok so i have a question do any of the 24v heads bolt onto a m20 block. or even does the say s52 head bolt onto the m50 or 52 bottom end. just wondering what kinda frankenstien possibilities are out there?

sorry just brain storming feel free to join in!

MS/5x heads are all the same casting number. So they all interchange within reason. If an M50 head fit on an M20 block, you would know about it. Also, M50 == timing chain, M20 == timing belt. Just that part alone should be your answer.

that answers my question, thanks! never even seen any other bmw motor other than a m20. i hope to change that though. i am really starting to come over to your side on the whole 24 valver thing. not saying i am gonna run out and buy one. but my eyes are def wide open hoping to spot one!

boo.

DOESNT MEEN I AM GOING TO JUST FORGET MY BOOSTED M20.

but a 24 valve looks pretty sweet in a e30 i have to admit.

I guess if you like taking the easy way out.

easy? nah just different. building a 24v is the same as a 12v. Just more valves. I figure, a 24v will put out more power with the same displacement as an sohc. *shrugs*

IMO adding 12 more valves is like waxing your pubes, it makes your johnson look bigger but at what cost?

less cost than stroking your 2.5 to 3 liters?

your missing the point of the analogy.