I´ve heard some different thoughts about using the original diff and the whole rear parts (drive shafts, A-arms etc) from the E21 (1981 M10 318i) when swapping engine to a M52B28 (suspension, brakes and strutbars will be upgraded no matter what). Some say it´s strong enough and some say it´s not! I´ve also heard "the original diff is strong enough for road use with M52B28". (i´ll do road use 99% of the time)
So would it work to use the original parts up until the gearbox and "only" changing the engine and the gearbox to a 6 cyl M52B28? I will keep the engine stock so it's a 193 hp engine. Does the gearbox differ from a E39 M52 and a E36 M52? I mean the 5 speed manual. The cardan shaft will have to be modded too ofc and I´ll solve the speedometer somehow.
I also understand it as i need to change the brake booster (to what, would you suggest?) and change the oilpan (or oil sump or what is it called in english?) to an E34 M50 pan/sump as its shallower and allows more ground clearance? About the cooler it should fit with the original one but its "prefered" to use another (smaller/more effective per size) i guess? Electrical fan?
I´m working on some sort of (for now) personal wiki about this engine swap and i need to gather as much info as possible before starting the work as i have to be quite time-efficient when starting it. Hopefully this wiki will turn out good and i´ll ofc share it here later as (one of many) how-to's
it´s a long journey though but im super excited and have never done an engine swap before.Thanks a bunch
