Quote:
Originally Posted by BMHope
Hi Guys
Long time lurker and BMW newbie (hoping to make an order next year)
Seeing as most posts have been focusing on the engine on the 240i and then slightly digressing from there, I was wondering whether anyone knew the technical differences between the 228i and the 230i engines.
Is it the same engine between the two just slightly updated or are the differences as stark as those between the engine in the 235 and 240i?
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The 230i has a new B-series engine; the B48. There's a technical thread here on Bimmerpost:
http://f30.bimmerpost.com/forums/sho....php?t=1133847
It's a completely new engine design, but follows BMW's same modular engine philosophy (500cc cylinder displacement, with modular block design, add/remove cylinders to meet varying displacement requirements) that has been around for a while now. There are significant differences, and the B58 (the six cylinder version) has proven to be very responsive to mods. Note that this doesn't transfer directly to the B48 found in the 230i, but it's encouraging, because the B48 is basically the B58 minus two cylinders.