Diffs again....
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canada karl
- Posts: 1065
- Joined: Tue Jan 06, 2009 3:50 pm
Diffs again....
If I take out the diff(3:64)in my 76 530i with a 5 speed and put in a diff(3:45) from a 77 530i auto how does it change things in terms of losing or gaining acceleration and also gearing for highway cruising?
1976 530i. BMW 59 Triumph TR3A(rolling resto). 67 Triumph TR4A(salvageable). 86 900S Winter car
Re: Diffs again....
You would lose a bit off the line, and at all speeds actually, and drop the revs 150 RPM or so at 100k. With a 4 speed I would want a 3.45, with the 5 speed I'd leave the 3.64 in place. Your speedo will also be off by 5.5%.
Mike W.
02 525ita. Wife's, aka grocery getter
02 530i. New to the fleet, 3 pedals.
03 QX4, AKA the Datsun. Finally got the 4WD vacationmoble to stop smoking.
07 Xterra. Still on the DL, a purchase from hell.
02 525ita. Wife's, aka grocery getter
02 530i. New to the fleet, 3 pedals.
03 QX4, AKA the Datsun. Finally got the 4WD vacationmoble to stop smoking.
07 Xterra. Still on the DL, a purchase from hell.
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canada karl
- Posts: 1065
- Joined: Tue Jan 06, 2009 3:50 pm
Re: Diffs again....
Thanks Mike 
1976 530i. BMW 59 Triumph TR3A(rolling resto). 67 Triumph TR4A(salvageable). 86 900S Winter car