On the BMWs, I own three with the single cam I6 (weirdo turbo ones but basically the same)...

Motor is half a liter more in displacement on most (some were 733i, less cubes)
Far more advanced port fuel injection (Ljet were early, Motronic late)
Easier to rebuild front end (struts), similar rear
Single row chain on the M30s (small six had belts)
Four speed trans w/ lock up

HVAC is terrible on them. You think the MBs are bad... LOL Tiny condensers, tiny aux fans, etc. Separate temp wheels from pushbutton unit equates to more crap to buy. PLUS vac pods UNDER HOOD AND INCABIN. Heater cores always fail.

Lots of electrical crap can keep you stranded. Main relay, fuel pump relay, on board computer, fuse boxes melt down, etc.

ZF's 4HP22 will burn up the forward clutch pack unless the trans has been remanufactured properly. $2-3500 price tag most owners face... just junk it instead. This was super common... even worse if you have other aforementioned issues.

Starter R&R will make you punch a baby.



That's at least for the E23 7-series. Great when new, but get terrible quick.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]