ktm Posted November 23, 2008 Share Posted November 23, 2008 A few of us have swapped the Z32 tranny in our S30s and we have all encountered the problem of retaining our mechanical speedometers. The Z32 tranny utilizes an electronic speed sensor. Over in the RB forum, some one posted a possible solution for the RB25 gearbox. This got myself and Proxlamus (Ryan) pursuing possible solutions based on the discussions contained in the thread (http://forums.hybridz.org/showthread.php?t=136439). I am not going to regurgitate the entire thread, needless to say Ryan stumbled upon the correct speedometer assembly from a D21 hardbody truck. I say correct assembly because there are quite a few choices to select from. A picture of the speedometer pinion assembly with the part number is below. I tried other parts as well with no success. They were both too short and the diameter of the pinion assembly was just a bit too small. The assembly in the photo above is a perfect fit in length and diameter. I installed it yesterday and took it out for a drive today. Needless to say I am excited to have a speedo again! The speedometer is approximately 5ish mph too fast at 75 mph since the pinion is not setup for my 3.70 LSD differential. However, I am not going to complain at all and am thankful I can utilize my stock speedometer. I like the period look of the gauges and of my LED lighting modifications. Quote Link to comment Share on other sites More sharing options...
Kash Posted November 24, 2008 Share Posted November 24, 2008 Picked up mine form dealer a few days ago, was on back order...tell us more about the LED lighting mod. Quote Link to comment Share on other sites More sharing options...
Daeron Posted November 24, 2008 Share Posted November 24, 2008 Many thanks!!! I agree with you on the gauges, so it is good to know that you guys have done the leg-work to make these particular Nissan Lego Bricks fall into place. Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted December 20, 2008 Share Posted December 20, 2008 Bo how did you mount the pinion assembly?! I haven't hoped under the car yet and fooled around with it quite yet.. but the new pinion assembly doesn't have a mount?! does the old mounting assembly come off the old electric one ? Quote Link to comment Share on other sites More sharing options...
ktm Posted December 20, 2008 Author Share Posted December 20, 2008 Ryan, if you look at the pinion you will see that there is an 1/8-in. (?) wide slot. I simply inserted the pinion until the bottom of the slot was flush with the tranny and I cut a thick washer to fit so that the washer hole was over the bolt hole while sliding it up into the pinion slot. You can see the slot in the picture above, it is to the left of the o-ring at the very edge of the pinion body. Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted December 21, 2008 Share Posted December 21, 2008 perfect! Thanks Bo!! Quote Link to comment Share on other sites More sharing options...
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