Lsd Diff Swap

[chook]

I am thinking about buying an R200 R33 viscous diff to put into my S2 Stagea, which doesnt have an LSD, one question, as the ratios are different, can my gears be swapped onto the LSD centre so as to keep my original ratio ? cheers

[fergo308]

yes.

I'll be doing the exact same thing when I can get around to it. I have a spare 4.1:1 S14 Q's diff,and an S14 Viscous centre sitting here spare.

I'll only need to swap the diff cover out of the wagon,and use my driveshafts.

Justin...

[ian]

yet another reason I bought the series 2 RS4S - it has a LSD as standard.. :-)

[CruiseLiner]

  chook said:

I am thinking about buying an R200 R33 viscous diff to put into my S2 Stagea, which doesnt have an LSD, one question, as the ratios are different, can my gears be swapped onto the LSD centre so as to keep my original ratio ? cheers

my ratios in my stagea were 4.3 and gtr diffs are 4.11, they are interchangable, and i installed the gtr internals into the stagea diff housing so all the attessa pump brackets remained as gtr have theres mounted elsewhere. the gtr and stagea housings are identical in size/shape except the mounting points for the pumps, etc. u can either use the larger gtr backplate or the stock stagea one, i had to modify the xmember a fraction (about 2-3mm) to allow the gtr backplate to fit on without touching the xmember.

ask away if u need any questions answered as i did the conversion about 14 months ago.

to answer your question, yes the ratios are interchangable.

Edited December 24, 2006 by CruiseLiner

[chook]

thanks, i prob wont do the change over myself, just needed to know before i went ahead and bought the LSD. cheers

[AlexCim]

i am probably just going to drop the drive shaft and weld the rear diff for a while.

Which reminds me, cruise you have PM about your diff!

[fmlycar]

I have just picked up a complete S15 diff. I want to fit just the centre in my housing and retain my ratios. Would it just be a matter of disassembling both units, swapping crown wheels and slotting it into my housing and using the stub axles from the s15 diff? I'm assuming I may need to mix and match the spacer washers to get the crownwheel alignment correct? Possibly trying the ones currently fitted to my diff at the moment and going from there. I will try and take plenty of photos and create a thread for my experience once I get around to it.

[KiwiRS4T]

  On 22/04/2015 at 3:58 AM, fmlycar said:

I have just picked up a complete S15 diff. I want to fit just the centre in my housing and retain my ratios. Would it just be a matter of disassembling both units, swapping crown wheels and slotting it into my housing and using the stub axles from the s15 diff? I'm assuming I may need to mix and match the spacer washers to get the crownwheel alignment correct? Possibly trying the ones currently fitted to my diff at the moment and going from there. I will try and take plenty of photos and create a thread for my experience once I get around to it.

Did you get a helical or viscous LSD? A viscous, especially an old one, would seem a waste of energy! Also some S15 diffs are 4.083 same as the Stagea (although there are a couple of other S15 ratios too).

[fmlycar]

I got a helical one. Pretty sure the ratio is 3.69 but I'll double check. Wanted a good street lsd. The kazz 2 way I had in my 180sx was far too agressive for daily duties

[KiwiRS4T]

  On 22/04/2015 at 10:57 AM, fmlycar said:

I got a helical one. Pretty sure the ratio is 3.69 but I'll double check. Wanted a good street lsd. The kazz 2 way I had in my 180sx was far too agressive for daily duties

Yep if its a 3.69 it should be a helical. Should be a good open road cruiser. You won't find a front one to match - have you decided to stay 2wd (removed the front driveshaft)?

[fmlycar]

No staying 4wd, that's why I'm only fitting the centre and not anything else.