E30 Zone

Afternoon,

have been doing some hunting have been offered

3.07 Torsen diff for £350.00 plus vat

or

3.38 Torsen diff for £400.00 plus vat

both z3 diffs i believe.

question is would one of the be worth it?

I tried a few diffs on the M52 and found that for each 0.1 difference in ratio resulted in 100 rpm difference in top gear (0.83 OD). If your 5th is 1:1 from the M52 box for example, I would go for the 3.07 ratio.

What will you be using the car for is the important bit you missed out, track driving then 3.38, road car 3.07

Its going to be road use only i have a poser E30

the 3.07 has 45k on it do you recon its worth the money or not? its a lot of money and i cant seem to justify it at the moment. i would go for an open diff but i like a bit of rear end action every now and then.

You can still get rear end action with an open diff. Just requires a bit more effort. You'll be more reliant on weight transfer and steering input than just mashing the loud pedal.

That seems a little on the steep side, at least compared to when I was looking at Torsens a year or 2 ago

That's what I thought it was a bit steep I mean I was looking and happy to pay around £200 for one and yes I suppose you can have some fun with an open diff but I love the idea of having an LSD or Torsen diff.

oh well I guess I will keep looking for the one!!

thanks guys

Deffo 3.07 for a road car. Even my 3.15 would be a little too short for a pure road car.