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R200 Diff Ratios 

130 replies to this topic

#121 blingcommander

  • Joined:05-October 06
  • Location:Japan
  • Car:Scooty-Puff Jr.

Posted 15 June 2014 - 07:46 AM

In the car? Doesn't sounds right becwuse the diff doesn't sit central in the subframe. It is offset towards the passenger side

#122 180X

  • Joined:03-February 08
  • Location:Australia QLD
  • Car:180 type X, s15

Posted 16 June 2014 - 09:14 PM

yeah, when i had my type X i swapped over to 5 bolt shafts from another 180. They were equal length. Now that i have a s15 i wanna chuck the diff in there but got these shafts that arent equal length =S.. so not sure if they will work or not.

#123 blingcommander

  • Joined:05-October 06
  • Location:Japan
  • Car:Scooty-Puff Jr.

Posted 17 June 2014 - 06:04 AM


Offset towards the passenger side. Passenger side is shorter

#124 redrocketman01

  • Joined:03-July 14
  • Location:Australia QLD
  • Car:1992 s13 sr20de

Posted 03 July 2014 - 12:41 AM

OK so I am new to Silvias I just got myself 92 s13 Sr20de 5 speed manual. With a welded diff running 205/40r17 I have had to do a speed check with gps results are as followed. 60km/h(gps)=80km/h(speedo) 100km/h(gps)=140km/h(speedo) we belive the diff ratio is 4.11 however what may have been changed that the speed is out so much ?

#125 Frequent Slider

  • Joined:07-April 13
  • Location:Australia NSW
  • Car:Corolla KE70

Posted 21 August 2014 - 03:03 PM


Very useful!

#126 billywhiz

  • Joined:20-June 06
  • Car:200sx s14

Posted 26 August 2014 - 09:42 PM

Frequent Slider, beware, when I cross matched Nismo recommendations for LSD kits vs kit data within the install instructions (also on thier site) I found that
It recommended 38420-RSS15-C5 for S14 SR20DET MT, install instructions mention C5 kit has 38220-0V161 (Qty2) side flanges ie same, whereas D5 has 38220-RSS50 & 38220-4P071 side flanges, ie different ones for driver/passenger sides. I found as Bling above, I needed asymmetric flanges.

#127 20SIX

  • Joined:11-October 10
  • Location:Australia QLD
  • Car:s13 silvia

Posted 29 December 2014 - 08:30 PM

Hey guys, trying to do my research here doing a lot of reading, looking for some confirmation..

Pulled diff out of my s13, snapped a tooth of pinion. Now it's an abs, 4.08 (viscous) with 6 3x2 bolt shafts (thought was r200 but not sure now)
With the small front mounting bolts and 4 bolt rear casing,,

I bought a 4.11 r200 abs 5 bolt shaft diff out of r33
(Large front mounting points with bushings, and 2 bolt back casing)

Now the plan was to transfer pinion and centre over to my casing and fit.. Done a dummy fit and its appearing like not going to work well, without some light machine for clearance..

So what I'm trying to find out now is ( as if rather not do any machining etc) if I swap the rear casing over, and aquire some longer bolts and bushings for the 33 diff... Can I bolt that diff/casing into my s13, will that work? ( before I got transferring the centre and pinion back into it)

Also yes my shafts appear to fit into the new centre fine too, so doesn't appear to be an issue there.


Edited by 20SIX, 29 December 2014 - 08:32 PM.

#128 Casper

  • Joined:04-November 07
  • Location:Australia NSW

Posted 30 December 2014 - 10:48 AM

Just switch over the rear cap and make sure you have the bushes for the bigger mounting points then should bolt straight up no issues

Also need to change the shafts

Edited by Casper, 30 December 2014 - 10:49 AM.

#129 20SIX

  • Joined:11-October 10
  • Location:Australia QLD
  • Car:s13 silvia

Posted 30 December 2014 - 12:36 PM

Cool that's what was hoping, thanks mate much appreciated.

Just trying to find bolts and bushes at the moment

#130 Sanouske

  • Joined:17-December 11
  • Location:Australia SA

Posted 10 December 2015 - 05:47 PM

Thread revival.

Long story short ive built an R32 GTS rally car. Its using the GTST brakes and hubs and currently has a 4.3 open ratio diff which i believe is from a 180sx as its an R180 with the small ears, 4 bolt rear cover and 3x2 bolt flanges. Firewall code suggests its meant to have a 4.1? If i recall correctly.

Anyways, im planning on keeping the engine the RB20DE, so i cant use the extra HP of a turbo setup to benefit the launches and out of corner speed requirements im having. But what i want to do is fit a taller ratio diff. Something ideally around 4.9 or even 5.1.

I need it to have LSD also. Welding it will not suffice.

Is there any suggestions for what to look out for to fit my requirements? There is so much misinformation out there its becoming harder to precisely work out whats the best combination of parts.

I was hoping to find the unicorn front r200 diff fitted in some navaras/pathfinders that ran the 5.1 ratio and pinch the parts to use in a vlsd r200 rear diff and use the 5x1 shafts and half shafts if needed. But not having much luck locating anything as yet. Ideally a clutch packed LSD would be best but im happy to shim the vlsd to accomodate what i need. Also plan to swap the rb20 gearbox to a z32 gearbox to assist a tiny bit in the wide gap between 2nd and 3rd. Affectively tightening that up a fraction. As down the straights, Its a sleeper.

Very much appreciate any of your idead and assistance.


#131 GerQuomma

  • Joined:09-February 18
  • Car:Guam

Posted 10 February 2018 - 04:53 AM

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