Phil (Ari)

Good going - looks like you were trying - so 10 points for that. Lots of spare cars/shells around, cheap as. Go the ti's !!

Thanks guys, I think I'll go with Alister's theory and assume it might be out of a Z3. It works 100%. I changed the oil when I bought it - bloody expensive stuff and only done a couple of auto crosses in it since. I'm converting it into a club rally car. Fitted new Bilsteins and springs to the rear yesterday. Sump guard today. Got new Bilsteins for the front too (all suspension bits from Suspension Tech in Akld) now waiting on some more parts to arrive. Once lockdown is finished, I'll get a roll cage, seats & belts - then just about good to go. Thanks again

Thanks for your reply Nathan. I've checked (it is on axle stands at the moment) and both wheels rotate forward. On the dirt, both wheels drive, so I'm pretty sure it is a LSD, so it is a bit worrying that everything I read online also says it should start with an S. I also took the guess that the ratio is 4.44. Is there a way to check it properly though? I've rung the local BMW agent, they don't know how to check it. Perhaps BMW Germany?

I've just installed a LSD but am not sure of the ratio. Can I tell that from the Tag on the diff? It is: R 444V7022