Learn me about differentials...

Driftomodachi

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

__________________
2010 40th Anniversary ll GT-R start button ll GT-R map lenses ll Plastidipped fangs and rear valence ll OEM foglight & switch ll Motordyne E370 Cat back ll Motordyne ART Pipes ll Takeda aFe Attack CAI ll Sprint Booster ll Z1 34 row Setrab oil cooler ll Z1 Motorsports M-Spec Shift Knob

dP3NGU1N

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.

__________________

35% Hooper Optik | Takeda Attack CAI | F.I. HFC | Hotchkis Sway Bar | Stillen 24row | OS Giken Super Lock LSD | TK Shift Knob | EVO-R Carbon Diffuser

clintfocus

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.

synolimit

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

__________________
13 370z-

synolimit

I have a set

But I prefer the solid SPL.

__________________
13 370z-

clintfocus

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

Chuck33079

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

__________________
2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

clintfocus

that being the case the whitelines are better for a DD

synolimit

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.

__________________
13 370z-

Rangerz

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

__________________
Stillen Gen III/ NST/ Fast Intentions Non-Res HFC & 12" Resonated CF TDX/ Setreb series 9 OC/ SPL upper control arms/ Whiteline front & rear swaybars/ Uprev tuned by Seb@specialtyZ/ 319HP 262TQ/ Z1 PS Cooler/ Z1 SS Premium break lines/ CJM Road Race pump/Carbotech F:XP10 R:XP8 Nismo OC DIY

clintfocus

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.

Wonka2581

Sub'd....

__________________
"I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

Rangerz

*****************************************/ID/2966/Project-370Z-Improving-Grip-by-Tuning-a-Cusco-RS-LSD.aspx

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.

__________________
Stillen Gen III/ NST/ Fast Intentions Non-Res HFC & 12" Resonated CF TDX/ Setreb series 9 OC/ SPL upper control arms/ Whiteline front & rear swaybars/ Uprev tuned by Seb@specialtyZ/ 319HP 262TQ/ Z1 PS Cooler/ Z1 SS Premium break lines/ CJM Road Race pump/Carbotech F:XP10 R:XP8 Nismo OC DIY

Wonka2581

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

__________________
"I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

Chuck33079

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.

__________________
2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent