Locked Diff, ActiveLSD, or LSD ? Someone explain...

[ix9]

Hi guys,

I've seen some skylines around with what I assume to be "Locked Diffs" they make this skipping noise of the inside wheel while turning tight corners.....

... first of all, is this safe for daily driving ?

Does anyone here recommend a locked diff brand/type ? Are there switchable diffs to lock/unlock them ?

What's wrong with the standard LSD that comes with Skylines ? Or was it an option?

And what exactly is an active LSD ?

Are you able to lock a standard skyline diff ?

[Clint32]

Those are probably a mechanical LSD, just a bit noisy. The standars ones just wear out after a while.

[CamGTS]

I have Active LSD on my R33 SII GTS-25T and this is what I know about it and it aint much.

The Active-LSD uses a computer to sense wheel slipage and diverts power to the aposing wheel rather than by mechanical methods, the main difference is the speed that is can tranfer power from wheel to wheel. 1/50 sec. It uses a similar system to the 4WD system on the GTR but only transfers power from side to side.

[Jay95R33]

I've got a mechanical in mine and your right, they are a bit noisey around tight slow corners. But apparently they give you the best grip for a (two wheel drive) rwd car.

Straight line drags are great, corners are a bit strange at first, but once you realise that they are very pradictable your OK.

They really aren't as bad as everyone says they are in the wet either.

J

[T0nyGTSt]

Do all Skyline r33 models have the basic mechanical LSD?

T.

[Jay95R33]

  Quote

Originally posted by tlai909

Do all Skyline r33 models have the basic mechanical LSD?

T.

All turbo R33's have LSD as standard. But mechanical locking LSD's are an after market thing.

Some loucky people got the Active LSD's, they are again different to normal LSD and mechanical locking LSD's.

Sooooooo many diff's.........

J

[Guest neoGT-25]

whats the best diff for a car like mine to get it drifting? (Slow & Heavy)

I want to convert my car into a drifter anyhelps appreciated

[akeenan]

i have active lsd ahhaha i am lucky

[skyzerr33]

kymbo don't go a locker unless u want it for race only

in WA u'll get a yellow for it.

[GET53T-GTR33]

I was told i had a locked Nismo diff of some sort, and in regards to wet weather, it is pretty bad, as when u hammer the pedal the rear end just spikes out, i found out the hard way doing a 360 around a round about, and thats with 4wd. =(

[Reggi34dr]

I'm looking at getting a manual r33 sedan still deciding on turbo or not.

so does that mean a turbo sedan will have a viscous LSD and a non turbo wont have LSD?

can someone clear it up for me please.

[SLY33]

whats there to decide? get the turbo!! You prob wont even need LSD in a non turbo most of the time

-is the std diff in the turbos viscous? or does it have clutch plates? what is a viscous LSD?!

[Duncan]

Yeah, standard diff is viscous.

Viscous diff uses property of the oil to limit slip - as slip occurs it get stickier. quickly.

The active diffs use sensors on the wheels, and electronically controlled clutches to control torque - just like the front to rear split in atessa.

[R31Nismoid]

with the mechanical... so it locks under power ?

That sounds good... The wet wouldn't bother me as my car is nasty as it is so i take it easy.

But it can be a little unpredicatble at times, so J, if as you said it makes it more predictable ?? Then i would want that.

And that's good for drifiting isn't it ? That's what i'm aiming for over the next 2-3 years as a project!

[Jay95R33]

R31 - yepp, you've hit the nail on the head. From my limited experience (cause I drive like a granpa most the time!), when the back comes around it's very predictable.

From what I've read, the mechanicals are great for drags and trackwork, and even better for drift. They can be a bit noisey for street driving. Some days it pi$$es me off, but other days I think 'damn I love this diff !!'

Like last night overtaking someone doing 70 in a 80 zone... Raining... I drop it back to 3rd and give it 1/2 throttle. It starts spinning the wheels but it still holds a dead straight line.... Unless you flick the wheel a bit of course

[Nexus_SiX]

hhehe...

I have "active LSD"

Probably why the sky has been this tangerine colour for a while....

[meggala]

jay hit the nail on the head they are predictable.

mycefir has one fitted its a 1.5 way not a 2 way but it makes drifting that much easier its great I wont have a stock diff again

meggala

[R31Nismoid]

mmm thanks guys!

That's another thing i've put down on my project list LD

[GaryD]

doesnt a locked diff mean that both wheels are forced to spin together at the same speed regardless? which would be uterly useless for track work not to mention day to day driving, youd be wheel spinning around corners wouldnt u? im prolly hopelessly wrong thou

[Jay95R33]

Meg's - does your's clunk (inside wheel skip) around tight corners when you give it a bit of throttle?

GaryD - Mechanicals only lock up when the throttle is pressed, so they are sort of open wheeler diffs until you give it some go.

The reason why they are good for track work is cause instead of pulling hard out of corner from just before the apex and spinning the inside wheel (typical for even LSD diffs) they will power around with both wheels with a bit of oversteer.

But the oversteer isn't massive and is very easily controlled. Infact most, if not all V8 supercars use either locked or mechanical lockers of some sort.

I was up at Wakefield last friday watching the Brute Utes have a pratice, and as they were coming into the workshop area all of them were skipping the inside wheel while turning tight and slow....

J