which diff ?

[k20trew]

dropping a m30 in over the winter
and was wondering your opinions on which diff ratio is
best suited to the m30 ?
[drift intentions apply]

[vokietis]

3.46 for driftin 3.15 for normal use IMO

[Rav335uk]

Nope, you'll need a 3.73 or 3.91 for Drifting.

3.46 for nrmal road use, I have on fitted on my M30.

Also, what gearbox will you be using?

3.15 is too low for the M30 in the E30

[k20trew]

thanks guys
rav i will be using a e28 manual box

[leeparkes]

3.64 is a nice ratio, 75 mph @ 3k and enough balls to spin the rears all over the shop

Im running a 3.73 which gives me 72mph @ 3k and its very lively through the gears.

[Rav335uk]

Is 1st still usable with the 3.73??

[charlE30]

3.07 on mine, the M30 has plenty of torque to cope with it from low down, if anything it makes the lower gears much more usable. Hits 60 in second with ease and rather rapidly

3.91 also been on mine, 1st gear is useless and crap if you do any commuting but damn good fun for getting the back end out

My life has become one long commute so the 3.07 is 85 @ 3k

[ImysE30]

I've got a 2.93 going in mine.

For drifting you will want a taller/higher diff.

[DonkeyPunch]

I have a 2.93lsd also, and it's pretty good for a daily.
Good mileage, you can cruise at high speed, and Less shifting.

[leeparkes]

Is 1st still usable with the 3.73??

Just about

[k20trew]

i think the 3.73 is for me thanks lads

[johnl320]

3.07 on mine, makes 1st usable

[S38B38]

I am running 3.73---- w/S38B38 and 245-35 17" and the ratio is to short IMO,, i am going to 3.46

and i have plenty of power

[MrGMan]

so the way i see it 3.91 is the best to have some in the first gear to swing the back out ?

[Pembo]

I have a 3.91 and the wheels just spin in first! Been great fun as I use the car from drifting but I find you seen forever changing gear. Im going with a 3.63 meduim case. So somewhere in between everyone elses recommendations.

[Rav335uk]

3.64 or 3.73

[Jeltuh]

Just use a 3.07/3.25 lsd from a E28. Or for drifting a 3.64