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> trans gearing ?'s
ottox914
post Dec 31 2008, 10:37 AM
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OK, here's what I know, and would like to know. Our 901 has a 2nd gear that can't be changed w/out alot of $$$. If I want a shorter 3rd gear, the shade tree method would be to "flip" a 5th gear set.

If I want a taller 5th gear, would a "flipped' 3rd gear in the 5th gear location be taller than the factory 5th gear, and calm things down on the highway at 80 mph?

Yes, it might make for some odd gear spacing, I'll have to think hard about that as well, but as the car is mainly an auto x toy, the short 3rd would be nice, and a taller 5th for the trip to and from the events would be welcome, although the 3,4,5 spacing might not be so good for a track day.
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race914
post Dec 31 2008, 05:43 PM
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Here's the '901 gear flip chart'

Attached Image


This chart, along with the gear ratio worksheet is available here:

http://www.914world.com/bbs2/index.php?showtopic=79893

Coincidentally, the Re-gearing tech article includes an example auto-cross setup that shows flipping 3rd & 5th making a A-F-Ka-V-Z (IMG:style_emoticons/default/smile.gif)

I just bought R_Towle's 904 mainshaft & Ha 2nd gear from the classifieds here and plan to do some re-gearing myself!
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