cannonball55 Posted April 24, 2010 Share Posted April 24, 2010 Looking into getting a new ring and pinion for my 1989 r200 out of a 300 zx turbo. Its the clutch style lsd. I would prefer 4.10 or atleast 3.90. The 3.70 are too tall for my setup. In 6th gear at 70 mph I'm at only 1800 rpm. I know they put r200 rears in a ton of things over the years. Are all the gears from any r200 interchangeable? I have tried doing searches to find the answer and read the sticky threads posted in drivetrain and found that there is a 10mm version and a 12mm version. I think I have the 12mm but I'm not sure (may have got my numbers crossed). Any suggestions on where to buy a new set of gears that would work with my setup or a list of interchangeable gears would be much appreciated. Thanks Stewart Quote Link to comment Share on other sites More sharing options...
JMortensen Posted April 24, 2010 Share Posted April 24, 2010 There are longnose R200's and shortnose R200's and the gears don't interchange. I believe new gears are NLA from Nissan. Installing gears in a housing is the difficult way to get a different ratio. A much easier way is to find a diff with the gears you want and swap the LSD into that diff. I did a write up on this and it is posted in the FAQ section. I bought a 200SXT diff with 4.11's and swapped the LSD into that. You can get 3.90's from a 280ZX pretty easily as well. The earlier diffs come with 10mm ring gear bolts, so you just use a bushing to make up the difference. If you search you'll find a part number from McMaster Carr for the bushing. Quote Link to comment Share on other sites More sharing options...
cannonball55 Posted April 24, 2010 Author Share Posted April 24, 2010 I would rather keep my clutch style lsd instead of switching to a viscous one. Do any aftermarket companies make ring and pinion sets for r200s that will work? Anyone have a set of gears that they would like to sell? With the long nose r200 am I limited to finding gears for an 84-89 300zx? Thanks Stewart Quote Link to comment Share on other sites More sharing options...
johnc Posted April 26, 2010 Share Posted April 26, 2010 I would rather keep my clutch style lsd instead of switching to a viscous one. Do any aftermarket companies make ring and pinion sets for r200s that will work? Anyone have a set of gears that they would like to sell? With the long nose r200 am I limited to finding gears for an 84-89 300zx? Thanks Stewart Please search and read the previous post in this thread. Quote Link to comment Share on other sites More sharing options...
JJ Reyes Posted August 23, 2023 Share Posted August 23, 2023 I have an r200 long nose out of a N/A 87 z31. I want to keep it open diff but I’d really like to swap a 4.11 or 4.3 gear set. Will it just swap over? And will it work with the stock axels if I put the 4.11 gear in my r200 housing? (Z is going to remain N/A) Quote Link to comment Share on other sites More sharing options...
AydinZ71 Posted August 24, 2023 Share Posted August 24, 2023 (edited) My understanding is that all R200 long-nose ring and pinion’s are interchangeable in any R200 long-nose assembly. However, I would watch a few YouTube vids before you take on the challenge. It’s not really “easy” if you aren’t experienced. You need a dial gauge to set backlash, or some enamel paint to check tooth surface contact. It’s also a bit of a pain in the ass to get the center assembly out. Lots of banging with a rubber mallet to get things in/out etc. might want to just hand it to a local diff shop and pay them for 2-3 hrs labor Edited August 24, 2023 by AydinZ71 Quote Link to comment Share on other sites More sharing options...
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