Careless Posted October 4, 2008 Share Posted October 4, 2008 I ran the model number for WD21 here's what I got: Then I ran checked Section 330 of the FAST system for D21 units. There were tons of engines that came in the D21, none being a VG or an RB. but here's what I got: May not be of great use, but I can tell you for sure that all the 31GXX and the 33GXX are the same unit, but for different years, so if anyone knows what diffs came in the certain years, the gears can be cross-referenced to the years in section 330 of the Nissan FAST catalogue. looks like nissan put special parts on certain cars too that we never new about. all we get are turbo chargers Quote Link to comment Share on other sites More sharing options...
rayaapp2 Posted October 5, 2008 Share Posted October 5, 2008 What the thread is about is that when you use the RB25 gearbox it has an electronic drive for the speedo. If you want to use the original Z speedo then you need a mechanical drive to put in the RB25 gearbox. The part being discussed is a mechanical insert or pinion assembley that will go in the RB25 gearbox from another (Navara) Nissan model. Is that clear. So we are talking all RB25DET engines from the GTS cars then, just for clarification? So I should be following this thread for final part number and be prepared to do this so I have a speedo on my 260z when Im done. Im not sure what a Navara model is but I saw reference to it as D21. So Hardbody pickups? The ones readily avail here stateside? Thanks Quote Link to comment Share on other sites More sharing options...
Stealth-Z Posted October 5, 2008 Share Posted October 5, 2008 So we are talking all RB25DET engines from the GTS cars then, just for clarification? So I should be following this thread for final part number and be prepared to do this so I have a speedo on my 260z when Im done. Im not sure what a Navara model is but I saw reference to it as D21. So Hardbody pickups? The ones readily avail here stateside? Thanks I just ordered one yesterday from Elk Grove Nissan. Part No: 3270202G17 will be here for me some time next week. Quote Link to comment Share on other sites More sharing options...
Mike Rowe Posted October 6, 2008 Author Share Posted October 6, 2008 So we are talking all RB25DET engines from the GTS cars then, just for clarification? So I should be following this thread for final part number and be prepared to do this so I have a speedo on my 260z when Im done. Im not sure what a Navara model is but I saw reference to it as D21. So Hardbody pickups? The ones readily avail here stateside? yes to all Quote Link to comment Share on other sites More sharing options...
palauoriginal Posted October 6, 2008 Share Posted October 6, 2008 does this apply to the RB25de(non turbo) engines? ive read that they have the same transmissions as the rb20. but they are 93+. Quote Link to comment Share on other sites More sharing options...
Careless Posted October 6, 2008 Share Posted October 6, 2008 if it's an fs5w71c trans, then no. far as i know, all non-turbo RB25's (or all non-turbo RB's for that matter) came with that trans, ands its not EXACTLY the same in every application (different case designs). if your car has an FS5R30A trans from another car, it will possibly work, pending results of this thread... Quote Link to comment Share on other sites More sharing options...
Mike Rowe Posted October 6, 2008 Author Share Posted October 6, 2008 If its the same as the Rb20 as you say, I have read that they already have a mechanical speedo drive. I cant believe that the speedo housing would be physically any different but rather mechanical or electronic, so the same issue would apply. I would not be going into such detail/concern about a minor item like this, if you have not even decided/started an RB swap. First decide if you have the money, the will, the expertise and the tenacity to undertake the conversion. This is your major decision to worry about. Speedo cable drive is a long long way down the track. Quote Link to comment Share on other sites More sharing options...
ktm Posted October 6, 2008 Share Posted October 6, 2008 Please refer to this page and go to the VERY bottom of the page: http://www.nissannut.com/projects/SAS_3link/ You will see the speedometers we are talking about. They appear to be identical to the Z32 electronic speedometer assembly in dimension. I placed my order on Friday and hope to have mine later this week. The next issue will be clearance between the end of the assembly and the tranny tunnel. I do not know if the cable can make that bend..... Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted October 6, 2008 Share Posted October 6, 2008 I placed my order this morning!! Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted October 7, 2008 Share Posted October 7, 2008 I have two spare FS5R30A trans in my shop. One has the cable type assy, the other has the electronic type speedo drive assy. They were both sold to me (at different times) as Z31 88-89 turbo Z trans. I can pull them both and take pics if needed?? If that will help, since they are identical to the RB25det trans... Quote Link to comment Share on other sites More sharing options...
ktm Posted October 7, 2008 Share Posted October 7, 2008 J. Soileau, thank you for the offer, but since at least 3 of us have ordered a mechanical sender, I would wait until one of us has received it and can compare it directly to the sender in the Z32 trans. The link I provided above has the mechanical sender that we all ordered. At first glance, the red pinion-equipped sender looks identical to the electronic sender in my Z32 trans. Quote Link to comment Share on other sites More sharing options...
mtnickel Posted October 8, 2008 Share Posted October 8, 2008 Will be interesting to see the results here. On a side note...for those who have put the z32 trans in the s30 chassis...would you recommend it? OR should i go through the hastle of finding a 2wd pathfinder / 3.0L 2wd Hardbody or /z31 turbo 87+ trans. These are all basically the same as the rb25 trans, but more difficult to find. I can get the pathfinder one on ebay for about $600 shipped...but mileage and condition won't be fully known...OR i can get a basically newish z32 NA JDM trans that will surely have tones of life. Can i get the shifter far enough forward by cutting the linkage? That shifter linkage really baffles me in how it works (regarding the shaft and the geometry of it...guess i'd have to see it in action to understand). Just thinking out loud...but right now i'm leaning to the z32 trans for availability reasons (plus it's cool to say in the end that you have a z twin turbo trans). Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted October 15, 2008 Share Posted October 15, 2008 I received the part... and unbelievably.. the part bolts RIGHT up to the factory speedometer cable!! I'm stunned.. something actually worked the first time I hooked it up!! Excellent excellent news!! Now I can use the factory speedometer! yeppie!! Quote Link to comment Share on other sites More sharing options...
ktm Posted October 16, 2008 Share Posted October 16, 2008 Fantastic news. Courtesy screwed up my order and only sent a pinion. What was the exact part number? Quote Link to comment Share on other sites More sharing options...
mtnickel Posted October 16, 2008 Share Posted October 16, 2008 GREAT SUCCESS. I was worried about getting the speedo hooked up with my swap...can put my worries to rest. Just gotta figure out what gear i need. Mark Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted October 16, 2008 Share Posted October 16, 2008 the part number is on the box .. on the picture I posted!! 32702-02G17 Quote Link to comment Share on other sites More sharing options...
Jaspendlove Posted October 26, 2008 Share Posted October 26, 2008 i will order that tomorrow Quote Link to comment Share on other sites More sharing options...
ktm Posted October 26, 2008 Share Posted October 26, 2008 I would like to add that I experimented a little bit and also ordered the speedometer assembly from 1988 300zx turbo. I have a 1988 3.70 LSD differential and this would mean that the assembly would have the correct pinion. Unfortunately, while the assembly body is identical to the assembly for the truck, there is one crucial difference. The 300 zx turbo assembly does not have the little tab that allows it to be bolted to the transmission case. As a matter of fact, I do not see how it is retained in the transmission at all. Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted October 28, 2008 Share Posted October 28, 2008 the assembly body I purchased does not have a tab to mount it to the transmission either. I was going to fab up a mount to attach it somehow. Im not driving the car yet.. but i took a drill and rotated the assembly and watched my speedo increase in speed Quote Link to comment Share on other sites More sharing options...
ktm Posted October 30, 2008 Share Posted October 30, 2008 I received my new assembly and it has the mounting tab. It is also 50% longer than the 300 zx turbo pinion assembly. I'll compare them both to the z32 assembly when I pull it out. Quote Link to comment Share on other sites More sharing options...
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