What's new

Diff swap questions

Joined
15 November 2017
Messages
4
Reaction score
0
Points
0
Location
Albera
Country
So here's the deal I'm looking to put a lsd in my 1999 spec-s. From my resurch I believe it currently has a open diff system. So my question is will I have to change the whole diff housing or can I still just drop in the gear box and go?
 
Joined
25 May 2014
Messages
125
Reaction score
0
Points
0
Location
Stoke-on-Trent
Country
Can't answer your question on that sorry but I've got a spec r lsd in my garage (no housing) if you'd be interested in that?

Leo


Sent from my iPhone using Tapatalk
 

sniffy

Joined
27 February 2007
Messages
334
Reaction score
3
Points
18
Location
Co.Wicklow Ireland
Country
you can just drop the diff center into the spec s. just unbolt the the gear ring from the diff center and bolt it to the new diff center drop it back in and away you go. I would keep the spec s diff as it is a 4.1 ratio. I put a spec s diff in my spec r but i swapped the centers so that i got rid of the open diff as they are ****.
 
Joined
15 November 2017
Messages
4
Reaction score
0
Points
0
Location
Albera
Country
Thank you sniffy that's exactly what I was looking for! You wouldn't believe how little info there is out there about this topic it's some what suprising
 
Joined
5 December 2008
Messages
197
Reaction score
0
Points
0
Location
Huddersfield
Country
I made up my diff from the S15 housing (to keep the abs sensor), an R33 Auto 4.36:1 Crown and pinion gear with viscous diff, and R33 stub shafts (leading to R33 drive shafts)

Just remember the shims are selected on assembly so try to remember what order they went. You may need to play around with different shim sizes.

Not a difficult task, but just make sure it all spins freely and doesn't sound like its grinding. I found a set of digital callipers useful for checking measurements.
 
Top