S15 HLSD Durability.................

[g81981]

I understand they are more durable than VLSD, but how durable are they? Has anyone broken one?

[OptionZero]

They can handle the S15 Spec R's 250lbs/ft of torque (stock level) and more.

Helical gears last quite long, and require far less maintenance than a clutch type.

VLSD = nice for street driving
HLSD = drop it in, never worry about it, great for road racing and autoX
Clutch type = handles more power, but needs more upkeep. Possibly more expensive depending on brand/shop

Unless you are running major boost or plan to swap in a VK45DE, i wouldn't worry about breaking it

[g81981]

I have heard they are durable, but just need to know how durable. Quaife has a lifetime warranty on there unit. I'm wondering if the same material is used for the S15 as the quaife.
I know the s15 and quaife unit are helical, but the torque biasing is different.

[OptionZero]

look, if ou're worried about warranties, you probably shouldn't be driving a used car or modifying it.

The HLSD will last unless you do something stupid or crazy to it.

[g81981]

Not worried about warranties. I just want to know what type of materials they used for the HLSD.

[Var]

Not worried about warranties. I just want to know what type of materials they used for the HLSD.


Hardened Steel

[420sx]

I understand they are more durable than VLSD, but how durable are they? Has anyone broken one?

both vlsd and hlsd are stock differentials in a stock cars :mepoke:

[g81981]

both vlsd and hlsd are stock differentials in a stock cars :mepoke:

and..............?

[kandyflip445]

And some cars come with clutch lsds stock. WTF is your point?

[420sx]

my point oem is very strong. thats wtf my point is. the thread itself is stupid.

[kandyflip445]

Alright. It just sounded like you were trying to say they weren't up to par. ;)

[TheSnail]

How is it pronounced? I used to say "hell-ical" until my bro said it was "heel-ical" and made fun of me. Then the next day I said "heel-ical" and my old boss made fun of me and said it was "hell-ical" He asked me "do people pronounce helicopter, heel-icopter, or hell-icopter?" WTF ! which one is it?

[ranisron]

Or just say it "HLSD" I guess, make others to figure it out...

How is it pronounced? I used to say "hell-ical" until my bro said it was "heel-ical" and made fun of me. Then the next day I said "heel-ical" and my old boss made fun of me and said it was "hell-ical" He asked me "do people pronounce helicopter, heel-icopter, or hell-icopter?" WTF ! which one is it?

[boosteds13]

How is it pronounced? I used to say "hell-ical" until my bro said it was "heel-ical" and made fun of me. Then the next day I said "heel-ical" and my old boss made fun of me and said it was "hell-ical" He asked me "do people pronounce helicopter, heel-icopter, or hell-icopter?" WTF ! which one is it?

It's HEE-lical. Like helix from which it's derived.

[TheSnail]

I knew I should of trusted my bro. He went indepth about helical cut gearing? He said the gears are cut like those on a motorcycle? I knew I should of took a GT graduate’s word over a HS dropouts. Heel-ical it is. Thanks:)

[kandyflip445]

Just like HEELicoils ;)

[420sx]

he-lical msg lenghth fuck shit sonofbitch whore!!!!!!!!!!!

[Var]

tor-sen. is it tor-sen? i've heard people say both tor-sen and torsion. I just say helical


ir is torsen just a brand name?

[MakotoS13]

torsen is a "torque sensing" way of applicationg of power. i think.

[Var]

o...i thought helical did the same. i dunno. i like welded diffs. :)

[kandyflip445]

tor-sen. That how I've always heard it. The Torsen (from Torque Sensing)

[TheSnail]

o...i thought helical did the same. i dunno. i like welded diffs. :)


Torsen is a helical

[sykikchimp]

I would bet they're good for 500hp+ depending on how you drive, and what kind of tires you run. You would likely break teeth off the pinion or ring gears or in the transmission itself before actully breaking gears in the diff.

[suhster85]

Do people actually buy these? My friend has one or two coming form Japan.

[kandyflip445]

GIVE ME NOW.

[420sx]

helical is the suck for drift.

[OptionZero]

thank you for your contribution, but i can beat that wisdom with some of my own:

open diff sucks for everything

[Jeff240sx]

helical is the suck for drift.

Clutch is the suck for daily driving. Who cares? Drifters aren't the ones looking for hlsds. And don't say clutchpacks don't suck for DD. When you pull into a parking lot and your car sounds like it's falling apart, any reasonable woman will snicker at your expense.
-Jeff

[Var]

I got something to add here. I started off with an open diff, then got a 2-way, then bought another car equipped with vlsd, got my extra open diff welded 2 days ago and replaced the vlsd, then i drove my friend's car on the track with an hlsd yesterday.

Starting from the top
open diff is for daily driving for a non-enthusiast or a show car. And that's it.
2-way is damn overrated. Clunks a lot and sucks for daily driving. Very shitty. Grips hard when it needs to but unnecessary
Vlsd is ok for daily driving/some clutch kick drift action with shitty tires. Otherwise unresposive and shitty. Again good for show cars.
Welded diff.Awesome for daily driving and drifting. A LOT LESS NOISY than a 2-way because there is no slippage. It's just like a 2-way minus the clunking. Only the tires chirp around tight corners and very slightly. The operation of a welded diff > 2way . A LOT BETTER.
HLSD...umm. Not terrible by other reviews, but i drove this car right after i drove my car with the weld loc diff, and there is no comparison. It felt like a vlsd compared to welded. I suppose it would be very forgiving during grip sessions.

[OptionZero]

open diff= sucks. Period. It's free, though.

VLSD= cheap, sporadically effective, risky to buy because you don't know if its worn out, and even if it hasn't worn out, it will wear out sooner rather than later, and then you've got an open diff again

Clutch 2-way = like others said, not practical for daily driver, require maintenance, not cheap. Effective for drifter, less than optimal for grip. If you're a drifter and u don't care about noise, you buy a 2-way. Understeer on corner entry

Clutch 1.5-way = same noise, price, and maintenance issues, also not cheap, but great for grip, less than optimal for drift

HLSD= if u find the correct hardware and get it for under $700, best you can get for grip driving. No maintenance issues, no noise. Step on gas and you rotate (presuming you have decent tires). Crap for drift, as others have said

Welded diff= great for drift, cheap, lasts forever. Chirp tires in daily driving, but at least it doesn't clunk. Not sure of its effect for grip, but probably similar to a 2way with 100% locking (understeer on entry?)

This is just from what I read. I own an HLSD, had open diff for 2 years. HLSD gets bad rap because the fast majority of people here drift rather than grip, and therefore have no need for the advantage an HLSD provides (and it does help).

So if you are going to road course or auto X: buy an HLSD or Quaife (pricier HLSD)
If you are going to drift: buy a welded diff or 2-way
If if a diff is lower on your to-do list than 19's and a body kit: get a VLSD or leave it open

[TurDz]

Cusco RS does not clunk or make any noise during daily driving. It's a 1.5 to 2 way adjustable.

Anyway...this is becoming an LSD thread :p

[Jeff240sx]

^^ Then it's broken/wore out.
A clutch type, by definition, HAS to clunk/pop.. or it's not tight enough to be working at 100%.
-Jeff