For the M20 drag racers differential?

[DarKane]

What differential do you guys use at quarter miles?:D

[e30s52]

4.10lsd all day for a m20.

[Jon325i]

4.10lsd all day for a m20.

^^^^ What he said.

There are other lower (numerically higher) E30 ratios out there, but somewhat tough to locate. 4.10s are pretty common.

Jon

[DarKane]

i have 4.10s and that's why i started this topic.some friends told me that it's the stock m20b20 differential and when i'll swap with a m20b25 the car will rev like a motorcycle.i knew this diff is common at drifters,not draggers.

[Danny]

Its stock on both motors

[Wh33lhop]

I don't think B25 cars came with S4.10s and 5 speeds.

But it's a good diff for the 1320. The 318ti came with an S4.45 as an option but those are hard to come by.

[Kingb]

In Europe the 320i's came with 4.10 cause of the lower horsepower. I have a 320i with a 2.5i in it. I could only get about 300 km per tank or 17 per 100l. But it had power all day. Now I have a S3.73 more driveable with better gas mileage but there is a M50 in progress too

i have 4.10s and that's why i started this topic.some friends told me that it's the stock m20b20 differential and when i'll swap with a m20b25 the car will rev like a motorcycle.i knew this diff is common at drifters,not draggers.

[rThor432]

But also, not all 320i's had the 4.10. The diffs are sort of a selectable option in Germany, right? My bosses 320i Baur had a 3.64 pegleg in it before the 1:1 trans was installed with a 3.23. Basically any diff works with any car, it just depends on what you want to do with it.

[DarKane]

the guys here use mostly 3.64 non lsd for drags...don't know why

[nando]

the guys here use mostly 3.64 non lsd for drags...don't know why

maybe that's what they came with.. non-lsd for drag racing sucks. plus the 3.64 is too long for an N/A M20.

[rThor432]

maybe that's what they came with.. non-lsd for drag racing sucks. plus the 3.64 is too long for an N/A M20.

Agreed, plus one.

[DarKane]

so 4.10 lsd is the best choice then :-D