M20 Bottom End

[aTron12]

I have an '89 "b25" E30 and am looking into a bottom end rebuild. What really is the difference between the older versions and my motor? Can I just pick up any M20 bottom end for the rebuild and fit my head and everything else on top?

http://sfbay.craigslist.org/eby/pts/2757458600.html

Thanks

[red_e30]

pretty shure all the m20 blocks are the same difference is the head and internals.

[apbt_rescue]

you should be good with that block and slapping your head on it. HA ... the only caveat i know of would be the iX block which has a different oil pan which facilitates the front end diff/axle

[20gmr]

from what i have heard the IX block is completely different. Any M20 should work i but keep in mind the piston did change. I don't know much about what came in what and what years ibut I do no they made several changes to piston skirt length.