Another way to drop your lap times ...

[sparky]

Have you track junkies noticed that SoS are finally offering a 4.4:1 differential? read about it here

Before going to the trouble of engineering the design of the 4.4:1 (in Japan) SoS tested the demand in prior thread and at least 10 of us responded. Now it's actually available only 2 or 3 of us have put our hands up again, and unless we get 10 it probably won't go ahead.

And why would you do this - well, after 10 seconds off the line a NSX equipped with 4.44 diff will be about 1.5 car lengths ahead of it's stock sibling .... now that's a real track advantage :smile:

 

[Ponyboy]

As an alternative, you can get the OS Giken diff and it comes with a 4.44 diff. I've got it in mine and there's a sizable difference in corner exit speed. Plus the 4.44 diff for acceleration benefits.

The only disadvantage was, obviously, the initial cash outlay and a noticeable push on corner entry. But once it hooks up, there's a lot of traction there.

 

[stuntman]

Is this just a r&p or a lsd as well?

The OSG is a 4.40:1 final drive and a GREAT LSD.

 

[Ponyboy]

If you do end up going the OS Giken LSD route, instead of choosing the 4.44, you can choose the 4.62. If you're FI, it's probably overkill but if NA, it could be advantageous.

 

[sparky]

Is this just a r&p or a lsd as well?
The OSG is a 4.40:1 final drive and a GREAT LSD.

It's just the R&P for about $2K depending on the number in the initial buy (vs about $3.5K for OSG with LSD)

Is your OSG the 1 way, 1.5 way or 2 way configuration?

 

[Hapa88]

Here's the benefit of the 4.235 ratio from the NSX-R.

Fast forward to 4:42 on this video.
<iframe width="420" height="315" src="http://www.youtube.com/embed/es1RKcW_tSA" frameborder="0" allowfullscreen></iframe>

 

[sparky]

great demo, after 13 secs with 4.235:1 the NSX-R did the NSX by about 1.5 car lengths.

A stock NSX fitted with a 4.4:1 diff will be about 2 car lengths ahead of a stock NSX after 13 seconds (i.e. about 1/2 car ahead of NSX-R)

 

[stuntman]

It's just the R&P for about $2K depending on the number in the initial buy (vs about $3.5K for OSG with LSD)

Is your OSG the 1 way, 1.5 way or 2 way configuration?

The standard 1.5-way 4.06:1 OSG LSD with a JDM 5spd ratios.