Nissan differentials in S2K.
 

Read about a guy using a 350z axle here a while ago but can't find the thread, 1 hour of searching...
Anyone else tried to build your own kit? Most common to use 300zx axle?

i found the thread through searching google but when i open the link it says: You do not have permission to view this topic !!!

the thread title was: New diff upgrade in the works! R200 350Z DIFF!

Weird... That's the title for sure. Maybe removed for some reason.

Like te idea of this upgrade, please post if there's other projects like this going on out there. :)

inline pro makes a kit

http://www.inlinepro.com/s1/p-31-s2000-diff-kit.aspx

most likely removed because he was trying to market that stuff without being a sponsor. He should host that stuff elsewhere.

guess that kit uses custom driveshafts?

I think he talked about using the stock shafts, one Nissan axle had the same bolt pattern. Correct me if I'm wrong here.

yeah i think i remember something about the same bolt pattern

the oem driveshafts bolt straight up to the nissan diff. Pretty much if you mount it in the same spot as the oem diff, you use stock axles and find a way to custom mount the driveshaft to the diff flange.

the s2000 oem driveshafts? does the 350z diff has 6 bolt flanges?, as earlier R200s have either 5bolt or a 3x2 bolt pattern...

that would be easy enough, just get a custom one piece shaft and spend a day making mounts.

yes, the oem 6 bolt flange axle bolts up to the nissan diff.

Mr Joe, do you know how wide the 350 axle is with flanges? Close to S2K?
Damn hard to find one over here and measure all that stuff... :(

I'm no expert since I merely read the thread, but I memorized it well. I don't have any hard number to answer your questions. What I can recall is that the width of the 350z diff is very slightly larger than the s2000 one, thus making it easy to fit the s2k axles. The side flanges' bolt pattern matches up well to the s2k axles so they're bolt on. All you need to do is to fabricate the proper mounts and find a way to custom mount the s2000 driveshaft to it.

Ah, cool. That axle got built in spacers then. ;) I´ll try to find one and pay the owner for some measuring.

Teach me some proper English here, trying to learn. Some people say drive shaft to both the one between tranny and rear axle and the ones between axle and wheels.
Isn´t there different names on these parts? Confusing sometimes.

Its worth checking out Hybridz.org. The drivetrain forum has a wealth of information on the various Nissan differentials and pros/cons. Any of the later model R200 diffs will be stronger than anything a f20c can dish out. My old rb26 powered 240z was putting out 300 rwtq and the r200 never blinked an eye. The gear ratio may not be ideal with our transmissions so doing some research on the best set up is a good idea. The 350z has a viscous diff (r230 version) I believe, but you can find aftermarket clutch type or geared LSD versions (such as Quaife) as well. Good luck. Keep in mind the R230 diffs are over 100lbs in weight.

http://forums.hybridz.org/index.php?...11-drivetrain/

The usdm 240sx had 6 bolt flanges. The r200 vlsd sucks ass, though. The whole vlsd concept is a terrible idea.

The gear ratio for the 240sx and 350z were the same, IIRC....the 240sx for sure was 4.08:1. That's close to the S2000's 4.1:1 ratio.

Btw, your english is better than a lot of native speakers abilities (at least from what I can see here).

It depends on what car you pull the r200 out of. The one I have is a 4 bolt input flange and 5 bolt output flange.

Interesting, so stock axles can be used (assuming the diff is mounted in the same spot)? So basically you just need custom mounts for the diff and some sort of adapter/extender for the driveshaft?

Does anyone know how the inline mount kit works? Does it position the diff in the same spot and use stock length axles? I ask because maybe inline would sell just their mounting hardware/adapters separately without the upgraded axles and driveshaft? Guess best thing is to just give them a call..

Sorry for my ignorance here guys but what would be the benefit of doing this swap??

basically cuz this is a stronger diff that can hold more abuse,
s2k's diff are weak,

correct me if im wrong

I wouldnt say weak but I will say that the S2K diff is 'delicate'.

I've seen people blow it up after 4 or 5 hard launches at the drag strip (Were there's more grip in the surface).

Only reason I would swap for a stronger piece is if I go FI and/or set up the car for drag or drift. For NA and time attack/track the stock one should be fine initially.

Expensive.. I'm pretty sure you can just get the internals swapped out of our diff for some that are alot beefier for alot cheaper as well

Correct me if I am wrong, I think the housing on our differential is weak... Not the actual LSD. I'm really tempted to design my own kit instead of using Inline Pro's since it is so damn expensive. I have some guys who do CNC work so if I design it they could probably cut it for me.

Doesn't look like too much R&D would be required to mount the actual Nissan diff in a similar to stock location. I don't think I would try to use our stock axles as they are most likely the next weak link after the differential.

you can buy stronger oem sized axles.. I believe DSS offers them.

I think the stock axles are adequate.
Let me know if you make such a mount kit I'm in for that :thumbup:

Thanks for all the great info guys! Forgot to tell you it´s for FI, probably a waste of money on N/A.

About the gear ratio in the Nissan axles, maybe a good thing for FI?
No need for the "GTI" gearing when you have torque and more hp on every gear. Anyone here ever driven a S2K with 3.5:1 final gear? Slow up to boost?

I believe the stock Nissan ratio is 3.90...

When I checked ebay they listed 3.3, 3.73 and 3.538 on the 350z axles.
I guess 3.3 is automatic but can´t figure out the other ones, maybe different from year to year?

Thanks for the information fatjoe10
 

Thanks for the fatjoe10 for the information on the 350z diff in s2000:LOL: