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Which LSD to get

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Old Oct 27, 2015 | 12:19 PM
  #11  
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Originally Posted by Bullwings
https://www.s2ki.com/s2000/topic/1136982-lsds/

Two guys that track very frequently in the S2k Challenge are using a custom tuned cusco LSD.

I'm likely going to go with Cusco since CSG is local to me; no list price on the counter space garage site, though, so depending on pricing, I'm still considering os-giken.

If you want a bullet proof solution, i'd go with the PuddyMod OS-giken which has an upgraded pinion or something (the main part that tends to break and wear out in the diff).
S2k Challenge drivers get special treatment from CSG.

Side note, I have a PuddyMod built diff paired with my Cusco LSD on a custom spec.
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Old Oct 30, 2015 | 09:06 AM
  #12  
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Originally Posted by SpeedFreaksUSA
Originally Posted by shind3' timestamp='1445878751' post='23786358
Sounds like clutch plates are better at slower corners to aid rotation?

The track I would go do is no slower than 3rd gear at any point. I guess the stock TorSen is good enough then?
In an extreme example like if you are doing a tight 180* turn then yes the clutch pack diff will be a little quicker to put the power down to both drive tires. More importantly for road courses, the clutch packs will lock/stay locked even when you are putting power down over curbing (where the torsen can open up).

-Matt M.
good explanation, thanks.

so on flat fast ground, torsen is fine? how stiff does a suspension and how sticky do the tires have to get before a torsen becomes a problem even on flat fast ground?
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Old Oct 30, 2015 | 02:23 PM
  #13  
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Originally Posted by takchi
Originally Posted by Bullwings' timestamp='1445629982' post='23784496
https://www.s2ki.com/s2000/topic/1136982-lsds/

Two guys that track very frequently in the S2k Challenge are using a custom tuned cusco LSD.

I'm likely going to go with Cusco since CSG is local to me; no list price on the counter space garage site, though, so depending on pricing, I'm still considering os-giken.

If you want a bullet proof solution, i'd go with the PuddyMod OS-giken which has an upgraded pinion or something (the main part that tends to break and wear out in the diff).
S2k Challenge drivers get special treatment from CSG.

Side note, I have a PuddyMod built diff paired with my Cusco LSD on a custom spec.
Good to know. Thanks David.
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Old Nov 20, 2015 | 06:39 AM
  #14  
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From: Brandon, MS
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Originally Posted by shind3
Originally Posted by SpeedFreaksUSA' timestamp='1445894515' post='23786656
[quote name='shind3' timestamp='1445878751' post='23786358']
Sounds like clutch plates are better at slower corners to aid rotation?

The track I would go do is no slower than 3rd gear at any point. I guess the stock TorSen is good enough then?
In an extreme example like if you are doing a tight 180* turn then yes the clutch pack diff will be a little quicker to put the power down to both drive tires. More importantly for road courses, the clutch packs will lock/stay locked even when you are putting power down over curbing (where the torsen can open up).

-Matt M.
good explanation, thanks.

so on flat fast ground, torsen is fine? how stiff does a suspension and how sticky do the tires have to get before a torsen becomes a problem even on flat fast ground?
[/quote]

The stock torsen is fine unless you lift a wheel. Even on flat ground you can lift depending on conditions, setup, and inputs. Sticky tires isn't really a factor.
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Old Nov 20, 2015 | 06:41 AM
  #15  
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Originally Posted by SpeedFreaksUSA
We had the option to go with a couple different brands but chose OS Giken for the tunability and reliability-
Did you use off the shelf setup on the Giken? If not, what did you change?
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Old Nov 22, 2015 | 03:20 AM
  #16  
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Originally Posted by SpeedFreaksUSA
We had the option to go with a couple different brands but chose OS Giken for the tunability and reliability- the clutch packs are pretty much bulletproof and won't wear out/need replacement like on some other options. We had a group buy on these to get the prices closer to other less expensive options not too long ago. It is closed but if there is more interest we could do another run of them.

I just got mine in my car not too long ago. I've only done two track events on it but the difference was apparent and it has greatly improved the dynamics of the S2000. Once the weather cools down out here I expect to be shattering personal bests at all the tracks I frequent.

Here is a quick video from my first day testing with it, the clutch packs engage/disengage so smoothly that the car feels a little less on edge and is easier to control beyond the limit. With only 200whp and sticky tires it's a horrible drift car but you can still have some fun

[media]https://www.youtube.com/watch?v=9GB2kRqk__4[/media]

-Matt M.
Nice! Looks like it's much happier trailing the throttle. Great driving.
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Old Nov 23, 2015 | 03:37 AM
  #17  
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Originally Posted by SpeedFreaksUSA
We had the option to go with a couple different brands but chose OS Giken for the tunability and reliability- the clutch packs are pretty much bulletproof and won't wear out/need replacement like on some other options. We had a group buy on these to get the prices closer to other less expensive options not too long ago. It is closed but if there is more interest we could do another run of them.

I just got mine in my car not too long ago. I've only done two track events on it but the difference was apparent and it has greatly improved the dynamics of the S2000. Once the weather cools down out here I expect to be shattering personal bests at all the tracks I frequent.

Here is a quick video from my first day testing with it, the clutch packs engage/disengage so smoothly that the car feels a little less on edge and is easier to control beyond the limit. With only 200whp and sticky tires it's a horrible drift car but you can still have some fun

[media]https://www.youtube.com/watch?v=9GB2kRqk__4[/media]

-Matt M.
Love the drifting Matt, awesome control
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Old Nov 23, 2015 | 07:42 AM
  #18  
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Originally Posted by WynnS123
Did you use off the shelf setup on the Giken? If not, what did you change?
No I chose to spec mine as a 1.1-way because I like a fair bit of rotation off throttle and I plan on running aero eventually.

Originally Posted by JJ7
Nice! Looks like it's much happier trailing the throttle. Great driving.
Originally Posted by MB
Love the drifting Matt, awesome control
Thank you kindly, sirs

JJ- It absolutely is. The car throttle steers beautifully with this 1.1-way as a result. If your videos are any indication I'd say we have a similar driving style and preference in setup. I think you might prefer a 1.1 to the 1.5 as well.

-Matt M.
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