Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 08-23-2006, 08:11 AM   #1
h8z2luze
12psi boost
 
h8z2luze's Avatar
 
Join Date: May 2006
Location: Nor*Cal
Posts: 338
h8z2luze is on a distinguished road
Default Rearend???

I was just wondering what kind of rearend is in the mk3 supras? Is it limited slip or posi or neither? Anyone know the gear ratios???? Thanks.
__________________
1989 Supra 7MGE MK3 5-speed project...
http://www.cardomain.com/ride/2385505
h8z2luze is offline   Reply With Quote
Old 08-23-2006, 11:06 AM   #2
suprasforlife
3" Exhaust
 
Join Date: Jun 2006
Location: Montana
Posts: 71
suprasforlife is on a distinguished road
Default

There are several different gear ratio's and some have lsd rearends and others are open(no lsd, no posi). The way you tell is by the code that is on the tag in the drvers door jam. Look at the code that begins with G.
It should be something like G305.
The G is for the diff size so G=8inch diff(all Supras have the 8inch)
The 1st two numbers are the ratio.
They are as follows.
28=4.3
30=3.9
31=3.7
The last number tells if it is open or lsd. If it is an odd number it is lsd, if it is even, it is open.
So G305 is an 8 inch rearend housing with 3.9 gear ratio and is lsd.
Hope this answers your question. I have never heard of a Supra with a true posi in it, would take away from the cars cornering ability to much. There might be more ratio's but these are all I know of.
suprasforlife is offline   Reply With Quote
Old 08-23-2006, 11:29 PM   #3
newbsupra
3" Exhaust
 
newbsupra's Avatar
 
Join Date: May 2006
Location: Sask/Canada
Posts: 238
newbsupra is on a distinguished road
Default

i dont have a code on my car? 86.5 NA
newbsupra is offline   Reply With Quote
Old 08-23-2006, 11:44 PM   #4
damdog05
12psi boost
 
damdog05's Avatar
 
Join Date: Apr 2006
Location: Georgia
Posts: 250
damdog05 is on a distinguished road
Default

my 86.5 has an lsd, but it doesnt mean yours does. take a look at your rear end. mine said right on it somewhere that it was lsd.
__________________
My cars:
85 Trans Am- Ehhh- Gone
83 Rx7- Much Better- Gone
86.5 Supra- Love- Not Gone
damdog05 is offline   Reply With Quote
Old 08-23-2006, 11:47 PM   #5
newbsupra
3" Exhaust
 
newbsupra's Avatar
 
Join Date: May 2006
Location: Sask/Canada
Posts: 238
newbsupra is on a distinguished road
Default

well, when i spin around corners, or squeel the tires, there is two tire marks, which would probibly mean LSD?
newbsupra is offline   Reply With Quote
Old 08-24-2006, 12:47 AM   #6
suprasforlife
3" Exhaust
 
Join Date: Jun 2006
Location: Montana
Posts: 71
suprasforlife is on a distinguished road
Default

Yes 2 tires spinning is lsd, and the tag is under your hood on the firewall, I forgot that they did not put the stickers in until 1989, it's a big metal tag, you can't miss it.
suprasforlife is offline   Reply With Quote
Old 08-24-2006, 05:32 PM   #7
Dejvid1785
3" Exhaust
 
Join Date: Aug 2005
Posts: 193
Dejvid1785 is on a distinguished road
Default

Just lift your rear end up and spin the back wheels if they both spin in the same direction you have lsd. If you spin them and they go seperate ways then you don't have lsd. It also says on the differential LSD oil only which means you have an LSD.
__________________
88 Targa: Exhaust, Headers, Intake
Dejvid1785 is offline   Reply With Quote
Old 08-24-2006, 06:04 PM   #8
grygst76
3" Exhaust
 
Join Date: Dec 2005
Location: Springfield, Massachusetts
Posts: 87
grygst76 is on a distinguished road
Default

sorry to jack....

some idiot peeled the sticker off my door, I have an 89 turbo and I do not see the lsd tag on the rear either is there anywhere else they put the id??

Last edited by grygst76; 08-24-2006 at 06:10 PM.
grygst76 is offline   Reply With Quote
Old 08-25-2006, 01:08 AM   #9
suprasforlife
3" Exhaust
 
Join Date: Jun 2006
Location: Montana
Posts: 71
suprasforlife is on a distinguished road
Default

I don't know of any other place on the car other that the door jam and on the rearend itself. I remember seeing somewhere in my forum travels that one guy found his sticker on the inside of the car in the hatch area, but if memory serves me correct it was under the interior pannels, I cannot say if that is where the factory put it or if someone just moved it there because they painted it or something. What gear are you in at 75 mph and what rpm are you at? Tell me that and I might be able to tell you what you have for a gear ratio. It's really pretty simple, if you are doing 75 in 5th gear and are at 4,000 rmp or so you have low gears, if you are only at 2,500rpm or so then you have high gears or long gears as some people call them.

Last edited by suprasforlife; 08-25-2006 at 01:10 AM.
suprasforlife is offline   Reply With Quote
Old 08-25-2006, 02:03 AM   #10
grygst76
3" Exhaust
 
Join Date: Dec 2005
Location: Springfield, Massachusetts
Posts: 87
grygst76 is on a distinguished road
Default

Quote:
Originally Posted by suprasforlife
I don't know of any other place on the car other that the door jam and on the rearend itself. I remember seeing somewhere in my forum travels that one guy found his sticker on the inside of the car in the hatch area, but if memory serves me correct it was under the interior pannels, I cannot say if that is where the factory put it or if someone just moved it there because they painted it or something. What gear are you in at 75 mph and what rpm are you at? Tell me that and I might be able to tell you what you have for a gear ratio. It's really pretty simple, if you are doing 75 in 5th gear and are at 4,000 rmp or so you have low gears, if you are only at 2,500rpm or so then you have high gears or long gears as some people call them.
at 70 I am at 2100 rpms in 5th. 75 I think 2850
grygst76 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
MK4 Rearend Gearing? Sub-Zero MKIV Supra 0 10-12-2008 01:01 AM


All times are GMT. The time now is 01:53 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86