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Old 01-09-2013, 08:40 PM   #12
TitaniumCranium
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Join Date: Apr 2005
Location: Seattle / Sequim
Posts: 3,151
My Ride: 2002 BMW 330Ci
Quote:
Originally Posted by trive2 View Post
Yup, the transmission will cost you three times as much for the extra gear :S Much stronger gearbox, but who needs it unless they're blowing 300+ HP.

And the extra gear is just an extra overdrive, as far as I know 1-5 are identical, so it's not any quicker, just more economical.
Gear Ratios - 323i
  1. 4.23
  2. 2.52
  3. 1.66
  4. 1.22
  5. 1.00

Gear Ratios - 330i 6-spd
  1. 4.35
  2. 2.5
  3. 1.66
  4. 1.23
  5. 1.00
  6. 0.85

Not a lot of difference, and basically an overdrive.

Other notable differences are that 5-speed has a TSB for the shift forks that should (must) be performed and I think Neil covered that in his diy.

A negative of owning the 6-speed (non-m) is a serious lack of available aftermarket flywheel/clutch combinations by comparison to the 5-speed. The clutch discs are both 240mm but the input shaft splines are much different.
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