Helical only locks up 1 wheel at a time. Clutch type locks the whole axle. OS Giken has the most clutch plates. An aftermarket clutch type diff lets the car put down all of the power right away. No need to mess with anything else. But upgrading the diff bushings and to the finned diff cover are great ideas

Clint, I'm assuming you're on the OSG. How many miles do you have on it so far and have you ever had to service it (other than oil change)? Everyone is scared of the maintenance of clutch type LSDs but I don't know anyone who's had to service an OSG one yet. The same cannot be said for carbonetic and nismo, however.

No im not on a OS Giken, but ive driven on several in FWD, AWD, and RWD cars. Im actually on a Cusco Type RS, but mine is custom tuned. Im pushing the OS since its prolly the least maintenance from the get go. The Cusco is setup too tight for proper road course grip, but its easy to open and tune and even comes with instructions on how to, but most people here dont want to tune there diffs. OS giken's cannot be tuned privately, only by sending to OS. FYI ive had my Cusco for over a year now, lots of DD and track days and still no issues, just changing fluid.

This is why my first upgrade for <$500 was a diff cooler. Way easy to do and keeps the temps down so it works!

I have a set :tup:

But I prefer the solid SPL.

im on the solid SPL diff bushings too, but some people i dont think can deal with the low super charger style whine from the ring pinion once you go solid lol. but then again i dont know how the NVH is after the whiteline poly diff bushings is in comparision

You can't hear a difference with the whiteline ones.

that being the case the whitelines are better for a DD

Really? I hear nothing! Granted I'm stripped and have a no muffler exhaust. Only maybe have I heard something once or twice. I really wanted a loud whine. I was expecting something like poly motor mount bushings I did in a Wrx once. Being so quite I'll be doing solid tranny bushing and poly engine will be plenty for me if its like the jaw shattering rubble the WRX had.

Clint do you run the rs-spec f ? Just quicly looked at the cusco site and the spec f looked to be kinda road course specific. Do you also have to modify stub shafts or any other stock parts?

when you had yours tuned what torque were finally set at?

alot of questions I know just really interested in this LSD.

thanks

my car is still full interior and my exhaust isnt that loud, its a very subtle diff whine. i dont mind and i still street drive the car often.

i have the Type RS, i dont see a "spec F". mine is capable of 1.5 or 2 way if that clears up anything.

with the cusco diff no sub axle modding or replacing needs to happen, my OE VLSD stubs work with the LSD as is.

i have my RS set at 1.5 way, 80% lock, with 6 out of 12 ramp up springs in place for a smooth and progressive lock engagement. Also my Clutches are WPC treated for smoother operation and less heat.

Sub'd....

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Just found this because of new interest...


Looks like these guys tuned at 6 spring and 80 % as well. He mentions a treatment for the clut h pack that provides more life and smoother operation. I think the type F that I mentioned is similar as the discs are polished from the factory maybe a new option.

Thanks for the info Clint.

I just looked up the price for a OS Giken and my jaw hit the floor....:icon17:

So a quaife would be the appropriate choice for a daily driver running significantly more power than stock? When the VLSD ***** the bed I'll be damned if I throw another one in.