Transmission differentiation - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Mac Nibbles · 07-10-2014, 08:55 PM

So I recently (stupidly) purchased a ka transmission without any sensors. I know there's a difference between the s13 ka dual and single cam transmissions, particularly the gear for the speed sensor. I know for sure I don't have a s14 transmission because there's no hole for the crank angle sensor. So my question is, how do I identify and tell the difference between the two types of s13 transmissions so I don't mistakenly cram the wrong speed sensor gear in there?

Agamemnon · 07-10-2014, 09:57 PM

All S13 manual speed sensors are the same.

Mac Nibbles · 07-10-2014, 10:33 PM

Apparently there are two possible different speed sensor pinion gears for the s13:
http://forums.nicoclub.com/240sx-spe...l-t393740.html

Found some mixed info in this thread too:
http://forums.nicoclub.com/differenc...s-t283066.html

So some clarification would be appreciated

Agamemnon · 07-12-2014, 01:04 AM

The difference is that the one came with a 20 tooth pinion, and the "Sport pack" came with a 21 tooth pinion. The 21 tooth pinion was used to correct the speedometer due to changes in the diff gearing for faster acceleration. What diff are you using? If you have a lower geared diff or swapped in a JDM 180sx diff(4.36 ratio), then use the 12T pinion.

Really all you get is a 2-4mph difference in the speedo.

07-10-2014, 08:55 PM	#1
Mac Nibbles Join Date: Apr 2014 Location: 707 to the 510 Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	Transmission differentiation So I recently (stupidly) purchased a ka transmission without any sensors. I know there's a difference between the s13 ka dual and single cam transmissions, particularly the gear for the speed sensor. I know for sure I don't have a s14 transmission because there's no hole for the crank angle sensor. So my question is, how do I identify and tell the difference between the two types of s13 transmissions so I don't mistakenly cram the wrong speed sensor gear in there?

07-10-2014, 09:57 PM	#2
Agamemnon Post Whore! Join Date: Sep 2003 Location: Lake Stevens, WA Age: 42 Posts: 2,667 Trader Rating: (20) Feedback Score: 20 reviews	All S13 manual speed sensors are the same.

07-10-2014, 10:33 PM	#3
Mac Nibbles Join Date: Apr 2014 Location: 707 to the 510 Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	Apparently there are two possible different speed sensor pinion gears for the s13: http://forums.nicoclub.com/240sx-spe...l-t393740.html Found some mixed info in this thread too: http://forums.nicoclub.com/differenc...s-t283066.html So some clarification would be appreciated

07-12-2014, 01:04 AM	#4
Agamemnon Post Whore! Join Date: Sep 2003 Location: Lake Stevens, WA Age: 42 Posts: 2,667 Trader Rating: (20) Feedback Score: 20 reviews	The difference is that the one came with a 20 tooth pinion, and the "Sport pack" came with a 21 tooth pinion. The 21 tooth pinion was used to correct the speedometer due to changes in the diff gearing for faster acceleration. What diff are you using? If you have a lower geared diff or swapped in a JDM 180sx diff(4.36 ratio), then use the 12T pinion. Really all you get is a 2-4mph difference in the speedo.