S2000 Under The Hood S2000 Technical and Mechanical discussions.

AP2 Transmission Gear tooth counts needed

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Old Jun 15, 2010 | 11:52 AM
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Default AP2 Transmission Gear tooth counts needed

If anyone has an open AP2 transmission and would be kind enough to count the teeth on the following three gears and post them here that would be great. I need to calculate the VSS PPM for the AP2. I have them for the AP1.

My educated guess is as follows
#6 = 29
#2 = 24
#1 = 40

Thanks

On the end of part #6


The large end of part #2 and the gear to the left end of part #1
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Old Jun 15, 2010 | 12:46 PM
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With #6 and #2 you've got the AP2 sec. reduction ratio (1:1,208333333 )
I guess it doesn't really matter what the tooth count is.
IIRC 3rd gear wasn't changed in the AP2 transmission.
So IMO you've got all you need.

(AP1/1,160)*1,208333=AP2
No?



P.S.
Short answer: "No I don't have an open AP2 transmission lying around"

edit: the VSS reads 3rd gear, doesn't it?
A drawing of the transmission housing makes me think it is.

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Old Jun 15, 2010 | 01:05 PM
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Agreed, and I really don't care. But since I have done this much work getting to the AP1 VSS pulse per mile number, and seeing that the AP2 is different. I figured I might as well verify what the AP2 is for reference. someone will need it at some point.

Also I agree that from the spec they did not change the gear that the VSS reads, but better to be sure.
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