The Big LSD FAQ thread (About various Limited Slip Differentials)
You can configure at the time of purchase. OSG charges $125 to reconfigure the unit and they turn it around in one day. I can also reconfigure the units and just did one for a customer who drag races his LS7 240Z. Dropped the lockup timing from 336kg to 258kg and increased preload by 15%.
FYI... in most cases you do not need to reconfigure. They ship with a Spec-S setting that works well. In my NASA TTC 350Z I ran the Spec-S setting and the car worked very well.
FYI... in most cases you do not need to reconfigure. They ship with a Spec-S setting that works well. In my NASA TTC 350Z I ran the Spec-S setting and the car worked very well.
Last edited by betamotorsports; Jan 16, 2012 at 09:08 AM.
If you talk to the right people you can get the specs you need for adjustment. I havn't even touched mine since it was installed. IMO the only people who need to be able to adjust it are the ones with a high dollar race team competing at a national level.
99% of the people on this forum do not need the OSG Super Lock reconfigured from the Spec-S setting as shipped from OSG. The 1% that do have a very specific application where the additional tuning is need. I've reconfigured two diffs out of the dozens I've sold. One is for the drag racing example above (a 9 second car) and the other was for the 2011 FP National Championship winning E36 BMW.
"1 way, 1.5 way, and 2 way" are mostly marketing terms used to help manufacturers sell diffs. The terms very vaguely describe a diff's behavior under acceleration and deceleration but there are many other aspects to a diff's behavior then the pressure ring ramp angles that those terms pretend to describe.
Percentage of diff lock is the value when the diff reaches its full lock capability. All diffs allow adjustment of lockup percentage by swapping driven vs. drive plates and preload. Some diffs reach that number at low torque values and others reach it at high torque values.
The OSG Super Lock is different in that lock timing can be adjusted. OSG lock timing can be adjusted so that 100% lock is reached at some torque level and that torque level is what is changed to affect lock timing. The lower the torque level, the sooner the diff reaches 100% lock.
As shipped for an R200 diff (may not be correct for the 350Z R200) the 100% lock torque number is 336kg. That's diff torque not engine torque.
Percentage of diff lock is the value when the diff reaches its full lock capability. All diffs allow adjustment of lockup percentage by swapping driven vs. drive plates and preload. Some diffs reach that number at low torque values and others reach it at high torque values.
The OSG Super Lock is different in that lock timing can be adjusted. OSG lock timing can be adjusted so that 100% lock is reached at some torque level and that torque level is what is changed to affect lock timing. The lower the torque level, the sooner the diff reaches 100% lock.
As shipped for an R200 diff (may not be correct for the 350Z R200) the 100% lock torque number is 336kg. That's diff torque not engine torque.
New Member
Joined: Dec 2003
Posts: 573
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From: Oakland
Just get the OS, it's been awesome on the street for me, track reviews are universally positive, you get t-shirt and license plate frame, fluid changes are best, Rob gets relieved when you show up with that instead of something else, you can look down on everyone else's diff, and no other diff company has made DOHC conversions for old L-series 4 bangers.
Just get the OS, it's been awesome on the street for me, track reviews are universally positive, you get t-shirt and license plate frame, fluid changes are best, Rob gets relieved when you show up with that instead of something else, you can look down on everyone else's diff, and no other diff company has made DOHC conversions for old L-series 4 bangers.
Cusco LSD.
Last edited by RandomHer0; Jan 17, 2012 at 04:00 AM.
