1st Gen General Discussion The place for non-technical discussion about 1st Gen RX-7s or if there's no better place for your topic

85 gs limited slip conversion

Thread Tools
 
Search this Thread
 
Old Mar 10, 2025 | 10:06 AM
  #1  
Jax85fb's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2022
Posts: 20
Likes: 0
From: MA
85 gs limited slip conversion

Help. I am in the process of converting to limited slip. 85 GS with rebuilt motor.

I need to Ring and Pinion Gear Set with 4.88 ratio. Can someone please help me with this?
Also, if anyone can recommend the replacement parts that would be needed with this conversion. Racingbeat.com is the only site that has most of what I'm looking for, yet they only offer 4.111 ratio.

Thanks!
Sue
Reply
Old Mar 10, 2025 | 02:06 PM
  #2  
j_tso's Avatar
Rotary Freak
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Dec 2004
Posts: 1,972
Likes: 399
From: Austin, TX
Since you have an '85 axle you can use a Kaaz or Mazda Torsen LSD. Mazdatrix sells them and they show ring & pinion sets available.

Also the front diff on 95-2002 Kia Sportage has a 4.77 final drive that can be swapped in.
Reply
Old Mar 15, 2025 | 09:37 AM
  #3  
Jax85fb's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2022
Posts: 20
Likes: 0
From: MA
thanks!
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
hauntedz28
1st Generation Specific (1979-1985)
4
Feb 14, 2008 11:46 AM
RoTARY-ReX
1st Generation Specific (1979-1985)
1
May 6, 2002 06:18 AM




All times are GMT -5. The time now is 07:10 AM.