stony Posted June 8, 2003 Share Posted June 8, 2003 4.11 or higher pinion and ring gear. anyone have some layin around or know any shops that can get them? Quote Link to comment Share on other sites More sharing options...
BRAD D Posted June 8, 2003 Share Posted June 8, 2003 http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2418643338&category=33731 Happy bidding I will keep an eye out for you Alberta is some what close to you too, Well closer than any other state So what do you think 4.11's will do for you? Get you out of the hole faster? Be not so hard on the clutch? Quote Link to comment Share on other sites More sharing options...
stony Posted June 8, 2003 Author Share Posted June 8, 2003 i was just looking on there ??? Quote Link to comment Share on other sites More sharing options...
BRAD D Posted June 8, 2003 Share Posted June 8, 2003 http://www.zandzxparts.com/highperformance.html here too Quote Link to comment Share on other sites More sharing options...
BRAD D Posted June 8, 2003 Share Posted June 8, 2003 One more thing, I dont know if this will work but... Look at the 4x4 trucks they have super high gear sets...I think. And they might swap in...but again I dont know. Quote Link to comment Share on other sites More sharing options...
BRAD D Posted June 8, 2003 Share Posted June 8, 2003 he he he This page is dedicated to those users who have gone above and beyond the call of duty in providing technical information to the group. Member Name: Tloof Excerpts of messages featuring rear axle, driveline, front and rear final gear interchangability info. The H190 rear housing was used in the '80-'82 4WD 720's which had a 4.375 ratio ring & pinion, so that is why I mentioned it, as it is a good source for those that want to swap a 4.375 pumkin into their 2WD 720's (for example: 240SX engine swaps in the 2WD 720 need at least a 4.111 or 4.375 rear gear to get the engine RPM up into it's powerband on launch off the line). It is true that the '83-'86 4WD 720's used the C200 housing (which is a salisbury type of housing with rear removable cover), and the gear ratio in those models is a 4.111. I might point out that the C200 housing was resurrected again by Nissan in the '98 up 2WD Frontiers, and the ones behind the auto trans version have a 4.375 ratio (which could be transplanted into an earlier '83-'86 4WD 720 C200 housing by pulling the ring & pinion with spider gear carrier out of it for those who might want to change to the 4.375 ratio). There is also now a C200 housing variant in the '02 up Desert Runner and 2WD Crew Cab model Frontiers (available in only some of the models, the others still seem to have the H233 housing in them as well...who knows what Nissan is up to with such variations within the same model vehicles?) that has, I believe, a 4.625 ratio and a 4.9 ratio in them (it appears to be dependant on tire diameter and not transmission type), so those may offer some more gear choices for those of you that have the C200 housing in your '83-'86 4WD 720's. Also, all the pumkin center sections of the H190 housings used in the '86 1/2-'97 2WD Hardbody trucks and the '98 up manual trans model 2WD Frontiers will bolt-in to the 720's H190 housing. They do however, have 1 1/2" longer pinion gear input yokes on them that use a larger bolt pattern for the driveshaft u-joint connector (the pinion gear shaft length, diameter, spline size, and bearings are still the same though), so in order to use a late model pumkin in the 720's, you will have to either change the input yoke out with the one on the 720's center pumkin pinion gear shaft, or shorten your driveshaft 1 1/2" and use a pinion yoke flange to u-joint adapter from a 240SX driveshaft (they use the smaller u-joints of the 720, but the larger flange bolt pattern of the Hardbody trucks). The ring & pinion itself can also be installed in the 720's pumkin center section as well, but keep in mind that you will have to use the spider gear carrier that the ring gear is bolted to from the later model versions because Nissan changed to a larger bolt diameter on them (the bearings on them are still the same however). If the longer pinion yoke is used by shortening the 720's driveshaft, then the optional '96 up rear wheel antilock brake ABS system can be added to a 720 pickup due to the ABS sensor integrated in the pumkin center section on the pinion input yoke on those optional center section castings (that is what I did on my '85 2WD 720). That also paves the way to add the 4 wheel ABS system that have now come out in the '03 up 2WD Frontiers (requires also adding the front hubs & spindles from it on the 720 as well!). This should add more data to conversions possible on the 720 pickup!!! Oh, I forgot to mention that the Toyota rear end I measured was in an '88 Toyota truck. If you have to go to the trouble of removing the spring perches off, and rewelding them in the right spot for the springs to fit, then why even use the Toyota rearend? You can just as easily do the same to a V-6 Hardbody H233 rear housing, and then transplant a Pathfinder center pumkin section that has the limited slip carrier in it, and the gear ratio you already want! The brakes will also be more compatible then. Both the Toyota and Nissan V-6 Hardbody rearend are about 2 inches wider than the 720's rear housing is though! (so the tires will most likely hit the wheel wells with those swaps). Yes, the '80-'82 4WD 720's use a R180 front differential that has a 4.375 gear set in them. As a matter of fact, I just bought a low 52K mileage rear pumkin (it had supposedly been sitting in a Washington State wrecking yard for over 12 yrs) out of an '82 4WD 720 (which have the H190 type rear housing) to get a 4.375 ring & pinion for an upgrade on my '85 2WD 720 since I blew two teeth off the pinion gear of my 4.111 gear set (the higher power of my 240SX engine was finally too much for the over 300K mile ring & pinion!). Unfortunately, the dumb asses sent me the front differential by mistake (I got it for $100), so if you want it in order to upgrade to a 4.375 ratio, I can get the wrecking yard to sell it to you instead, and have them ship it to you direct (the wrecking yard is going to have to recall the item back via UPS and then reship the proper rear differential pumpkin regardless because of their mistake!). ------- Oh, and to be more accurate about the hub-to-hub dimensions on all the rear ends, all of the 720 H190 housings (both 2WD & 4WD) are 55", the Hardbody & Frontier 2WD 4 cyl housings are 56 3/4", and the Hardbody 2WD V-6 H233 housing is 57 1/2". The 4WD Hardbodies (both 4 cyl & V-6) H233 housings are also 57 1/2", except the spring perches are on the top of the housing rather the bottom like the 2WD models (the 720 4WD's are similar in that the rear housing mounts on the underside of the leaf springs too, and the 2WD model housings mount above the leaf springs). ------- The easiest way to convert your '86 4x4 720 to the 4.375 gears is to swap your entire rear end out for the earlier '80-'82 4x4 720 model H190 housing, since it has the 4.375 gear ratio already, and it has the correct hub-to-hub width and top side mounted spring pads (although it may well be difficult to find a low mileage unit in reasonable shape, and it will require a driveshaft change as well!). The next best option is to find a '98 up 2WD auto trans type Frontier, as it has a C200 housing with a 4.375 ratio, and pull the ring & pinion out of it and transplant it into your '86 C200 housing. A low mileage unit should be fairly easy to find, but since it is a salisbury type housing that doesn't have a removable center section like the H190 type housing, you will most likely have to buy the entire rear end just to get the ring & pinion (unless you can find one with a bent housing from a wreck), so it may be cheaper in the end to buy a brand new ring & pinion from Nissan (I don't believe that anyone makes an aftermarket ring & pinion for the C200 housing...and I know that there are no aftermarket ring & pinions for the H190 type housing either!). Keep in mind that you will also need to get a R180 front differential from a '80-'82 4x4 720 as well, to get the 4.375 gear ratio. I have a fairly low mileage one (51K miles) that I will sell for $100 to anyone that wants it, since I got it with the rear H190 housing center section from out of an '82 4X4 720 in order to get a 4.375 gear ratio to put in my 240SX powered 2WD 720. This would be cover the front half of what is needed to convert your '86 4x4 720 to the 4.375 ratio anyway! -------- No driveshaft mods are required to change the '80-'82 R180 front differential out for the '83-'86 one (they are both physically the same, just different gear ratios in them). As for the rear differential I am not sure if the u-joints are the same size, and the driveshafts are the same length between the early 4x4 720's with the H190 housing & the later 4x4 720's with the C200 housing. I do know that the 4x4 720's use a larger u-joint than the 2WD 720's, but the input yoke flange on the H190 center section is the same on all model 720's (whether 2WD or 4WD). The driveshafts are larger in diameter on the 4x4 720's when compared with the 2WD 720's (thus the reason for the larger u-joints). If anyone of you out there has a '80-'82 720 factory service manual, it has a chart in the PD section of it that gives the driveshaft length, diameter, and u-joint size. Let me know what it is and I will compare it with the data in my '85 720 factory service manual to determine if any driveshaft mods are required on such a conversion. Quote Link to comment Share on other sites More sharing options...
HS30-H Posted June 8, 2003 Share Posted June 8, 2003 4.11 or higher pinion and ring gear. anyone have some layin around or know any shops that can get them? Hi Stony, I have a spare 4.375 Ring & Pinion set for an R200 on its way to me from Japan at the moment. Condition is excellent. The problem is I'm in London, England - so it would need to be sent to you by International Air Mail, which would certainly be more expensive than finding one in the USA. PM me if you would be interested. Alan T. Quote Link to comment Share on other sites More sharing options...
zxgts-4 Posted June 10, 2003 Share Posted June 10, 2003 Hey Stony, try these. 8) http://www.courtesyparts.com/Merchant2/merchant.mv?Screen=CTGY&Store_Code=CP&Category_Code=z31_nismo_ringset http://www.courtesyparts.com/Merchant2/merchant.mv?Screen=CTGY&Store_Code=CP&Category_Code=z31_nismo_ringset2 Just to show they are around check this out, http://www.adelaidejap.com.au/accessories.htm There you go. Neil Quote Link to comment Share on other sites More sharing options...
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