Lsd?
10-23-02, 11:19 AM
#16
Guest
Posts: n/a
Power burnouts I'm telling you ;-) 
Push brake and pedal down at same time, slowly adjust each pedal (less on brake more on gas) until you find the spot where the rear wheels are spinning and you aren't lurching forward.
The biggest one I've done was like 30 seconds or so and filled up the entire block with smoke. You couldn't see anything in front of you. The car smelled like burnt rubber for days.
After the tires are hot, you can just floor it or almost floor it, and let off the gas, lexsc- you will do about 20ft burnout after this.
Explains why I think my TC is bad..you do put alot of wear initually on the TC before the wheels start spinning, not to mention brakes and tires. This is alot easier to do if you don't have rear brake pads(for this purpose only) or if they are really worn out.
Push brake and pedal down at same time, slowly adjust each pedal (less on brake more on gas) until you find the spot where the rear wheels are spinning and you aren't lurching forward.
The biggest one I've done was like 30 seconds or so and filled up the entire block with smoke. You couldn't see anything in front of you. The car smelled like burnt rubber for days.
After the tires are hot, you can just floor it or almost floor it, and let off the gas, lexsc- you will do about 20ft burnout after this.
Explains why I think my TC is bad..you do put alot of wear initually on the TC before the wheels start spinning, not to mention brakes and tires. This is alot easier to do if you don't have rear brake pads(for this purpose only) or if they are really worn out.
Last edited by Lvangundy; 10-23-02 at 11:20 AM.
10-23-02, 11:37 AM
#17
Lexus Champion
Originally posted by lexcoupe
yah how do we eliminate the one wheel burnout? cause i noticed that the other day, when only one of my wheels roasted.
Kevin
ps, i got an sc3 5spd
yah how do we eliminate the one wheel burnout? cause i noticed that the other day, when only one of my wheels roasted.
Kevin
ps, i got an sc3 5spd
Remember guys that an LSD is not a full locking diff; it will spin one wheel after a certain anount of force is applied.
My burnouts usually are 1 wheel, and I have the TRD Torsen LSD.
10-23-02, 01:37 PM
#21
Lexus Champion
Perhaps we're splitting hairs.
TRD / Lexus / Toyota = they all have used a Torsen LSD in thier cars from the factory. Claim whatever name you'd like.
I got into the habit of clarifying "TRD", and not "RMM", since most would say "the RMM 3.76 LSD". Maybe I should say Toyota.
TRD / Lexus / Toyota = they all have used a Torsen LSD in thier cars from the factory. Claim whatever name you'd like.
I got into the habit of clarifying "TRD", and not "RMM", since most would say "the RMM 3.76 LSD". Maybe I should say Toyota.
10-23-02, 01:56 PM
#23
Lexus Champion
Originally posted by Lex Luthor
Not splitting hairs, is it a Torsen or a clutch-type unit in your GS?
Not splitting hairs, is it a Torsen or a clutch-type unit in your GS?
http://www.rodmillenstore.com/gs_400/diff.htm
You can also check out some more info on it from my site.
Last edited by ///MDex; 10-23-02 at 01:58 PM.
10-23-02, 02:14 PM
#25
Lexus Champion
Originally posted by Lex Luthor
Now forgive me if i'm wrong, but that's not the TRD LSD, it's a factory Supra automatic rear with the Torsen.
Now forgive me if i'm wrong, but that's not the TRD LSD, it's a factory Supra automatic rear with the Torsen.
Originally posted by Dex
Perhaps we're splitting hairs.
TRD / Lexus / Toyota = they all have used a Torsen LSD in thier cars from the factory. Claim whatever name you'd like.
I got into the habit of clarifying "TRD", and not "RMM", since most would say "the RMM 3.76 LSD". Maybe I should say Toyota.
Perhaps we're splitting hairs.
TRD / Lexus / Toyota = they all have used a Torsen LSD in thier cars from the factory. Claim whatever name you'd like.
I got into the habit of clarifying "TRD", and not "RMM", since most would say "the RMM 3.76 LSD". Maybe I should say Toyota.
10-25-02, 05:41 PM
#26
Lexus Champion
On the subject of splitting hairs... an LSD, limited slip differential, is just that, one with a clutch pack that actually allows enough SLIP for the tires to turn at different speeds. This is necessary when turning. Otherwise the outside wheel would be trying to turn faster than the inside wheel. On pure drag cars that only go straight, a spool is often used. A spool locks both rear axles to the ring gear. When these cars turn one tire "hops" as something has to give.
The torsen or quaife differential is not technically an LSD it is a torque sensing unit designed to deliver power to the wheel with the most traction. This is done with a complex arrangement of straight cut and worm cut gears. I didn't know that a Torsen would allow one wheel to burn out. My only hands on is with clutch type LSDs.
The other type is called a locker. It has ratched type parts that will allow turning but in a straight line physically LOCK the axles to the ring gear effectively creating a spool. These tend to be very noisy and are used mostly in trucks.
The torsen or quaife differential is not technically an LSD it is a torque sensing unit designed to deliver power to the wheel with the most traction. This is done with a complex arrangement of straight cut and worm cut gears. I didn't know that a Torsen would allow one wheel to burn out. My only hands on is with clutch type LSDs.
The other type is called a locker. It has ratched type parts that will allow turning but in a straight line physically LOCK the axles to the ring gear effectively creating a spool. These tend to be very noisy and are used mostly in trucks.
10-28-02, 04:33 PM
#27
I just replaced the differential in my '95 sc300 5-speed as part of a N/A-to-turbo conversion. I've learned that while the differential cases are similar from a mounting standpoint, the LSD's have additional cooling fins on top of the case. Unfortunately, you probably can't tell unless you wrap your hand around the differential to feel the fins. If it's smooth up there, you have a standard differential
Check out the lower left hand corner of this illustration:
http://www.mkiv.com/specifications/ncf/ncf93/ncf159.jpg
I know it's just an illustration, but the top of the case has no fins.
Additionally, the companion flange is larger for the Supra LSD's (6-speed and Automatic)
To be sure I received an LSD, I removed the back cover and verified the Torsen sub-assembly was inside. That's the only *sure* way to know. :-)
-scott
Check out the lower left hand corner of this illustration:
http://www.mkiv.com/specifications/ncf/ncf93/ncf159.jpg
I know it's just an illustration, but the top of the case has no fins.
Additionally, the companion flange is larger for the Supra LSD's (6-speed and Automatic)
To be sure I received an LSD, I removed the back cover and verified the Torsen sub-assembly was inside. That's the only *sure* way to know. :-)
-scott
10-28-02, 05:10 PM
#28
Lexus Champion
Originally posted by motorheaddown
...the LSD's have additional cooling fins on top of the case.
...the LSD's have additional cooling fins on top of the case.
Also, another sure fire way to know is that you feel it working.
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