Notices
SC - 1st Gen (1992-2000)

what diff do i have

Thread Tools
 
Search this Thread
 
Old Nov 1, 2010 | 09:52 PM
  #1  
Guest
Guest
 
Posts: n/a
Default what diff do i have

I have 2 diffs one is auto and one is manual but not sure which one is which... I'm going to be putting the manual one on tomorrow so it would be nice if you guys can tell me which is which. thanks!

also fyi the shop that sold me the my wheels just gave me the diffs he said it both came from a sc300 but just to make sure would you guys know?




how can i find out what diff's i have? is there any part numbers on it? i think there are both open diffs? what is the one with the fins on the housing?


thanks!

Last edited by djkevin510; Nov 4, 2010 at 01:13 PM.
Reply
Old Nov 2, 2010 | 05:58 AM
  #2  
Biggu's Avatar
Biggu
Lexus Champion
iTrader: (12)
 
Joined: Aug 2007
Posts: 2,001
Likes: 10
From: Ohio
Default

mine looks like the one on the left, with the smooth casing and I have a original 5 speed car.
Reply
Old Nov 2, 2010 | 08:07 AM
  #3  
nivek5sfe's Avatar
nivek5sfe
Pole Position
 
Joined: Oct 2005
Posts: 336
Likes: 0
From: Georgia
Default

i also think that the one on the left is the 5speed one.
Reply
Old Nov 2, 2010 | 09:11 AM
  #4  
spdrcr771's Avatar
spdrcr771
Lexus Champion
iTrader: (21)
 
Joined: Mar 2009
Posts: 1,631
Likes: 12
From: Arlington TX
Default

The one on the right looks like it came out of a Supra, cause it has the cooling ribs on the top. That doesnt meen is was a 5spd supra. All supra diffs looked like that till 97-98 when they used the housing on the left. I bought a diff from a 98 TT supra & mine looks like the one on the left. There is a way you can check the gear ratio. Its kinda hard, but you mark both sides that the axle's bolt up to & you mark the drive shaft side too. Then you spin both of them at the same time, making 10 full rotations. You count how many full rotations that the drive shaft side spins. So if its a 3.76 diff & i think thats what the 5spd ratio is, after making 10 full rotations the drive shaft side would have spun 3.7 times around.
Reply
Old Nov 2, 2010 | 10:14 AM
  #5  
SCfamily's Avatar
SCfamily
Driver School Candidate
 
Joined: Oct 2010
Posts: 32
Likes: 0
From: Riverside, CA
Default

Open the cover count the ring gear teeth and divide them by the pinion gear teeth....you will have your gear ratio.
Reply
Old Nov 4, 2010 | 01:05 PM
  #6  
Guest
Guest
 
Posts: n/a
Default

do i have a supra auto tt diff? is that a tt auto diff on the right side? how can i confirm?
Reply
Old Nov 4, 2010 | 02:03 PM
  #7  
93MSB's Avatar
93MSB
Instructor
15 Year Member
Liked
Loved
Community Favorite
iTrader: (8)
 
Joined: May 2007
Posts: 1,057
Likes: 192
From: Texas
Default

take the rear cover off and look inside, youll be able to tell if its a torsen unit. You can also count the teeth on the ring gear and then figure out what ratio it is

***EDIT measure the driveshaft flange on the diff, if the one with the ribs one the casing has a bigger flange its most likely an auto tt supra diff

the one with ribs could also be one of the rare factory option LSD units

the torsen(auto tt supra) is on the left, the open diff is on the right

Last edited by 93MSB; Nov 4, 2010 at 02:11 PM.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rwdanthony
SC400 / 300 Classifieds
4
Nov 24, 2010 06:38 PM
Hectorm
Performance
1
Nov 1, 2007 12:54 PM
Bryan858
SC - 1st Gen (1992-2000)
7
Jun 6, 2006 11:50 AM
soj17
Performance
1
Jan 19, 2004 07:22 AM




All times are GMT -7. The time now is 02:53 PM.

story-0
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE
story-1
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

Slideshow: How to Get the Best Fuel Economy with a Hybrid and Plug-In Hybrid!

By Michael S. Palmer | 2026-05-05 20:54:44


VIEW MORE
story-2
10 Best Lexus Models No One Remembers

Slideshow: 10 best Lexus models no one remembers.

By Joe Kucinski | 2026-05-05 17:33:28


VIEW MORE
story-3
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

Slideshow: diving into 4Runner TRD Off-Road Premium's pricing, performance, fuel economy, features, and amenities!

By Michael S. Palmer | 2026-04-23 13:09:18


VIEW MORE
story-4
Top 10 Lexus & Toyotas to Drive Before You Die!

Slideshow: the 10 Lexus and Toyota vehicles you need to drive before you die.

By Joe Kucinski | 2026-04-23 10:34:24


VIEW MORE
story-5
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

Slideshow: Top 10 Lexus/Toyota models with the lowest 5-year depreciation rate.

By Joe Kucinski | 2026-04-08 12:19:06


VIEW MORE
story-6
Lexus LC500 Convertible Auction: A Preview of Rising Values?

The LC hasn't even disappeared from the Lexus lineup yet, and we're already seeing signs of an explosive market.

By Brett Foote | 2026-04-06 09:25:02


VIEW MORE
story-7
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

Slideshow: comparing the pricings, specs, power, fuel economy, fun-factor, and features of the GX 550 Luxury+ and TX 550h+ Luxury.

By Michael S. Palmer | 2026-03-19 13:44:11


VIEW MORE
story-8
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

Slideshow: 9 best Lexus models you can buy for half price and 1 you should avoid

By Joe Kucinski | 2026-03-19 12:01:07


VIEW MORE
story-9
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

Here's everything you need to know about the latest NX.

By Brett Foote | 2026-03-19 11:56:59


VIEW MORE