BMW E36 Engine Q's

[Prodrifter86]

Well lads! is an 323i 2.5ltr engine the same as a 325 2.5ltr engine????????
checked it on wikapedea and it says something like there the same but i dont no

[DaveM-sport]

325 is an M50b25, 323 is an M52b25.

M52 has an alloy block while the
M50 doesn't.

M52 also has a very restrictive inlet manifold but the M50 o
ones fits and let's it breath much better.


Your best bet is to get a 325 engine (M50 and 192 bhp standard) or else the 328 engine as this has an M52 but when let breath better, re-mapped and maybe Shrick cams it'll be heading for around 250bhp (193 standard)

only trouble is with the alloy blocks if you get a headgasket problem, the engine can be more or less scrap and early ones had a nikasil bore issue so make sure you get a good late engine. Alot of people put the internals from scrap 328 engines into 325 blocks to make a 2.8

[PeterT]

moved to tech section!

[Prodrifter86]

thanks for the info lad!
and sorry pete i had the threads in general chat and thought it was deleated so i made a second 1! so u can deleat the other 1!

thanks

[skinny d]

Good info !

Thinking of an e36 myself .

[Prodrifter86]

so maybe a 328 wud be better cuz would i could get more bhp out of it?????