Z3 diff

[Martin347]

I know that a z3 rear beam fits an e30, so does the diff?? And if so what ratios do they come in and are they LSD's???

[jaistanley]

The rear beam doesn't fit but the wishbones and diff will fit your E30 subframe. ZM's needing different drive flanges if keeping the STD E30 diff as they have larger 5 series type flanges/driveshafts.

Gives you 5 stud with an E36 offset.

Z3's come with LSD's if specced, the M's having 3.15/3.25 plate type diffs and LSD specced everything else having Torsen type (early may not have these)

I think the ratios are of use to those using E36 1:1 5th gearboxes as they are rather low ratio (3.45, 3.64, 3.15 and 3.25 depending on model I beleive)

Don't take any of the above as gospel... I'm still looking into it.

Jai

[Martin347]

Thanks for the info, this means its no use for me as i'm looking for a higher ratio diff (4.3-4.5:1). Thanks, Martin.

[M3Compact]

I've got a spare 4.1:1 if it's any good to you?

[Chris-W]

Rear beam does fit, but there's not a lot of point unless yours is bent as they're virtually identical.

[jaistanley]

OK... I've been told the MCoupé/ZMRoadster one I had wouldn't fit by the order of 10-12mm or something (in the spacing of the bush centres). Assumed they are all the same.

Jai