I just got the vehicle and iv noticed that when I accidentally took off to hard only one tire patch was left behind? I know its not a electronic lsd in the 08 but isn't it a mechanical?

 

Other way around my friend. The early ISFs had an electronic LSD differential, later models (2010+) have the Torsen unit.

Lou

 

so shouldn't it be leaving 2 patches?

 

^^^^No, the electronics are slower to respond than the Torsen. IMHO, the early diff was a mistake by Lexus. It's really not suitable for track work. One note, I have an '08, so I have the early diff and for spirited street driving I find that it works OK. There are a couple of threads of folks retrofitting the later diff to an early car. And SpeedFreaks had a Group of the Giken Unit:

https://www.clublexus.com/forums/cl-...on-thread.html


Lou

 

Just upgrade with the giken, it's a gangster LSD unit oh and figs/super pro diff bushings!

 

I just sourced a 2012 LSD what all needs replaced with the install? Seals etc?

 

Definitely do the axle seals. I didn't and it was back in the shop 2 weeks later. You'll be very happy with the upgrade! If you don't mind me asking how much did it cost?

 

A Search would have led you here:

https://www.clublexus.com/forums/is-...eted-pics.html

Lou

 

Axle and shaft seals.

 

Part number?

 

The 08 and 09 had open differentials that used the rear brakes to send power to the wheel with most traction.

This car should have never been released without a proper true Mechanical LSD system.

 

Gearbangin- did you buy the one that was on Robbins auto parts this week? What did you end up paying if you don't mind me asking? I emailed them about it but they never got back to me. I assume someone else called and jumped on it.

 

IMHO, you would be ahead of the game to just buy a used open diff and have the OS Giken LSD installed. It's way better than any Torsen. After putting mine in, I am seriously considering removing the Torsen and putting a Giken in my Supra. It really is that much better.