Learn me about differentials...

dP3NGU1N

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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

DavidZ370

FIRST let me learn you about grammar xD

osbornsm

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osbornsm

No but seriously...

I like the idea of the Quaife that doesn't lock up under slow turning.

THIS is the model i was thinking of: QDF13L | Quaife USA


What's this about upgraded diff bushings? *strokes chin
- Anyone?

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DR_

Yes the QDF13L is the one you want. I will warn you though, the Quaife is only a small improvement over the stock VLSD and you will still get wheel spin out of corners. I wish I went with a clutch type.

Masterbeatty

Are you upgrading anything else while its down?

Also make sure you buy new diff bearings and ring gear bolts. I bought mine from a near by dealer and i later after they were installed i saw it was wayyy cheaper on courtesy parts.com I also did not need shims but you wont know that untill you acctually install it and measure backlash, so that is a potential $50 or so on top of everything.

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2011 MB 6MT
Masterbeatty journal

Chuck33079

Whiteline diff bushings. Less than $100, goes a long way toward fixing wheel hop. Money well spent, especially if you're pulling the diff out anyway.

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

osbornsm

Really?!? Wheel spin as in, inside tire lighting up?
or
Both tires sliding properly?

I don't want to have to do maint on the diff all the time either... that's another perk of the Quaife... but now i hear it doesn't really work well

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clintfocus

It worked better then the VLSD, but its still limited by its design. If you want the most low maintenance/smoothest clutch type LSD, go OS Giken. If you want the most versatile and tunable clutch type LSD, go Cusco Type RS. If you want a affordable yet still decently smooth clutch type LSD, call Kaaz and have them setup a 1.5 way with "Super Q" clutches. If you want cheaper but still effective, go Nismo Pro LSD, regular Kaaz, or MFactory.

osbornsm

My only experience with a 1.5 way vs 2-way differential was with Gran Turismo.

The 370 is the first car i've purchased that's had a LSD... and it blows

- Any drawbacks of 2-way?
- Which one binds up when ur driving slowly?

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DarkJak

I remember reading a thread about how someone's OS G LSD unexpectedly locked up on the track a couple of times. Did that ever get sorted out? That really scares me about clutch LSD's.

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clintfocus

Even a torsen can fail the wrong way and lock itself. Usually failures like that are from over heating

clintfocus

when a Clutch type is noisey or "chirps" in low speed parking lot driving, it has to do with the Lock % setting, not the "way". a more aggressive lock setting with be rougher in low speed. 60% lock is good for DD and track fun on street tires. 80% is good for street and track on wide high grip street tires or R comps. 100% lock is good for drifting or a track only car on slicks.

In regards to the "way", that is the lock percentage rate during accelration and deceleration. if you have a 60% lock, then under throttle that is what you have, under decel, you have 30%. 2 way is the same lock % under accel and decel. road race setups tend to be good on 1.5 because there is less corner entry understeer, drifting is good on 2 way since you are constantly on and off the gas the lock % stays consistant

FL 4Motion

I'm currently going round and round in my head as to which LSD to upgrade to myself. I'm currently leaning towards the quaife b/c of the low maintenance but I'm afraid down the line I might wind up switching it out again for a "better" performing one like the OSG or nismo.

clintfocus

all the positive reasons people go quaife instead of clutch type are valid, and i myself even did that on past track car i had, and it was nice for the time i had on it. then i went clutch type and ill never go back HAHA