08-09 doesn't have LSD right?
03-10-15, 07:02 AM
#1
Pole Position
Thread Starter
08-09 doesn't have LSD right?
Yesterday when i changed my wheels,as the mechanic was tightening up the wheel bolts on the rear driver side (while the car was on jack stands),the rear left wheel was rotating as he turns the wheel on the other side...im the second owner of my isf and the car was equipped with sikky headers and joe z intake tube, i just want to confirm if what i saw was a sign of having LSD or this happens even the car has no LSD...
TIA
TIA
03-10-15, 07:05 AM
#2
the wheel will rotate on the other side but its the direction the wheel rotates.
with an Open the wheels will turn in opposite directions of eachother, IIRC with a torsen it will still do the same.
The wheels will turn the same way at the same time if the car has a clutch type LSD in the car.
no 08-09 came factory with a torsen or clutch type differential.
with an Open the wheels will turn in opposite directions of eachother, IIRC with a torsen it will still do the same.
The wheels will turn the same way at the same time if the car has a clutch type LSD in the car.
no 08-09 came factory with a torsen or clutch type differential.
03-10-15, 07:32 AM
#4
The 08-09 came with Electronic LSD. It works fine but not as effective on track. When i bought mines, i specifically wanted electronic lsd. Why? I don't track my car and I like the idea of not replacing the differential fluid every 60k miles. If i wanted a torsen lsd, i could always add it in later.
03-10-15, 08:34 AM
#5
Pole Position
Thread Starter
03-10-15, 08:47 AM
#6
Yes. If you put the car up on a lift and rotate one of the rear wheels, the opposite wheel will rotate in the opposite direction.
All 08-09s were equipped with open differentials. They used electronics/abs to simulate the effects of an LSD.
All 08-09s were equipped with open differentials. They used electronics/abs to simulate the effects of an LSD.
03-10-15, 08:51 AM
#7
Pole Position
Thread Starter
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03-10-15, 09:51 AM
#8
The Third Thing I would Do
I have a 2011 SFP, but If I had either an 08 or 09, the third thing I would add to it would be an OS Giken clutch type differential. The car, I believe, needs it.
You never know, but maybe the previous owner added it. I would have and I don't have much to spend on it.
A good way to tell is to put one rear wheel on a solid surface and try to turn the opposite wheel by hand while it is off the ground. Another, is to pound on the car from a standing start while going in a straight line. Two black and evenly applied rubber streaks mean that both rear tires were hooking at the same time.
Having both rear tires off the ground and turning in the same direction also works but I've had it fool me once.
Loren,
You never know, but maybe the previous owner added it. I would have and I don't have much to spend on it.
A good way to tell is to put one rear wheel on a solid surface and try to turn the opposite wheel by hand while it is off the ground. Another, is to pound on the car from a standing start while going in a straight line. Two black and evenly applied rubber streaks mean that both rear tires were hooking at the same time.
Having both rear tires off the ground and turning in the same direction also works but I've had it fool me once.
Loren,
03-10-15, 10:14 AM
#9
Just so you're clear 08-09 is an open diff.
The interesting thing is, when the car is on a hoist and you rotate one wheel, the opposite wheel rotates in the SAME direction. I noticed this in my IS350 also. Not sure how open the diff really is.
The interesting thing is, when the car is on a hoist and you rotate one wheel, the opposite wheel rotates in the SAME direction. I noticed this in my IS350 also. Not sure how open the diff really is.
03-10-15, 12:42 PM
#13
It still bothers me that Lexus/Toyota would build a beast of a car, only to hinder it by not giving it a real LSD to begin with. Many critics criticized the car from the get go. So even when they did install a real LSD after 09, nobody cared to reevaluate the ISF.
If I remember correctly, someone here on this forum mentioned the ISF w/ torsen LSD tracked a few seconds faster than the 08-09 ISF around Fuji Speedway. That to me says a lot, considering the "F" in IS-F and "F"-sport stands for Fuji Speedway...and supposedly the F symbol is designed after turn 1 at Fuji Speedway. This car was specifically designed on and for that track.
If I remember correctly, someone here on this forum mentioned the ISF w/ torsen LSD tracked a few seconds faster than the 08-09 ISF around Fuji Speedway. That to me says a lot, considering the "F" in IS-F and "F"-sport stands for Fuji Speedway...and supposedly the F symbol is designed after turn 1 at Fuji Speedway. This car was specifically designed on and for that track.
03-10-15, 12:49 PM
#14
It still bothers me that Lexus/Toyota would build a beast of a car, only to hinder it by not giving it a real LSD to begin with. Many critics criticized the car from the get go. So even when they did install a real LSD after 09, nobody cared to reevaluate the ISF.
If I remember correctly, someone here on this forum mentioned the ISF w/ torsen LSD tracked a few seconds faster than the 08-09 ISF around Fuji Speedway. That to me says a lot, considering the "F" in IS-F and "F"-sport stands for Fuji Speedway...and supposedly the F symbol is designed after turn 1 at Fuji Speedway. This car was specifically designed on and for that track.
If I remember correctly, someone here on this forum mentioned the ISF w/ torsen LSD tracked a few seconds faster than the 08-09 ISF around Fuji Speedway. That to me says a lot, considering the "F" in IS-F and "F"-sport stands for Fuji Speedway...and supposedly the F symbol is designed after turn 1 at Fuji Speedway. This car was specifically designed on and for that track.
03-10-15, 03:04 PM
#15
It still bothers me that Lexus/Toyota would build a beast of a car, only to hinder it by not giving it a real LSD to begin with. Many critics criticized the car from the get go. So even when they did install a real LSD after 09, nobody cared to reevaluate the ISF.
If I remember correctly, someone here on this forum mentioned the ISF w/ torsen LSD tracked a few seconds faster than the 08-09 ISF around Fuji Speedway. That to me says a lot, considering the "F" in IS-F and "F"-sport stands for Fuji Speedway...and supposedly the F symbol is designed after turn 1 at Fuji Speedway. This car was specifically designed on and for that track.
If I remember correctly, someone here on this forum mentioned the ISF w/ torsen LSD tracked a few seconds faster than the 08-09 ISF around Fuji Speedway. That to me says a lot, considering the "F" in IS-F and "F"-sport stands for Fuji Speedway...and supposedly the F symbol is designed after turn 1 at Fuji Speedway. This car was specifically designed on and for that track.
Some includes the Ferrari 458, McLaren P1 and also in the new Corvette C7's