If you take the two reading of 25.3 - 20.2 you get the 5.1mm difference. You have what to me looks like 85%

 

looks like 76.8%...left on your clutch that shown at LARA you posted here.

Thanks

 

Thanks for the reply.
Surprising it's still so much more after 30000+km of start stop driving

 

Where are you located and what clutch do you have?

What year is your LP?

 

Hi all, thanks for the reply.
My dealer just confirmed that the clutch wear of LP 560's are based on the "clutch wear index" which is not suppose to exceed 15000.
Not by doing the mm calculations.
They actually confirmed this with Lamborghini in italy.
It's gettin really confusing.
It seems pretty true cos as far as i know from my dealer, they ordered a spare clutch from 2yrs back and it's still sitting in the store till now.
We've plenty of 560's visiting the track very oftenly but none had ever gone for a clutch change even with mileage above 50000km

 

LaRa snapshot by Dallas Lambo of my SL when purchased last year, car had 4400 miles. Wear indicates as 0.4mm.
Guess this is pretty good using the calibraton method indicated above.

 

Hi TwinV10 ,:wave:

Using the factory workshop manual recommended wear figure of 5.6 mm,
your clutch lining was worn 7.7% on purchase. Remaining life is 92.3%.
Previous owner either had near perfect e-gear shift technique or exceptional clutch lining.

Can you advise if your SL's clutch package is an OEM F clutch or aftermarket?

cheers,
john

 

I hate to be the bearer of bad news but it looks like you have 11% left, not 89% .

Your usage is at 5.1 mm. We have noticed about 90% of our customer's clutch is worn out by the time they hit 5.7 mm.

You have to be very careful when you have less than 20%. The snapshot is not super accurate. It's just an indication to give an approximate data. The difference between a cold clutch snapshot and a hot clutch snapshot can be as much as 0.5 mm.

A lot of our customers have told us when the clutch goes, it goes and they barely made it home. Try not to travel too far from home.

There is a test that you can do that puts a lot of loads on the clutch but only do this for testing once because it's not good for the engine or the clutch. Put it in the highest gear that the E-gear allows you(5th or 6th gear) and have a very low rpm 1200-1500 and 30-40 mph, then step on the throttle. If it slips then it means your clutch is at the end of its life.

Again sorry for giving you the bad news.

Thanks,
Sean

 

Fwiw, there is another somewhat more scientific method for seeing
your slowly increasing clutch slip. Get regular E-gear snapshots, so
that you can add the "space covered" numbers and divide that sum
by the miles. The result should slowly creep up over time.

By contrast, I haven't found much use for the deterioration index --
here is how my original clutch (which I am still on) has looked over
the course of the past 4 years and nearly 60k miles:

miles index space/mile
15.0k 17061 1.471998
22.5k 17550 1.480164
30.0k 18586 1.485207
32.5k 16471 1.487468
35.0k 17309 1.481667
37.5k 16504 1.490417
40.0k 16448 1.494440
45.0k 15887 1.496162
50.0k 15743 1.496493
52.5k 15791 1.495938
57.5k 16373 1.493945

At 30k I had the PIS setting lowered, from 0096 to 0095, to make it
a bit more crisp / less soft, but that was the only thing that seemed
to make a difference w.r.t. the deterioration index. I am waiting for
my space/mile ratio to go above 1.5 at some point.

Armed with regular snapshots you can do other fun things, e.g. look
at wear rate per 1k miles, wear rate per couplings, etc. And you can
see how cold versus hot readouts differ, as Sean mentioned. So you
always want to take those mm readings with a bit of salt.

Well... lets see how far above 150k couplings mine will go -- its just
a bunch of slipping revolutions per coupling, each eating away some
layers of atoms worth of material, slowly eating ~5.6 mm...

 

At 30k I had the PIS setting lowered, from 0096 to 0095, to make it
a bit more crisp / less soft, but that was the only thing that seemed
to make a difference w.r.t. the deterioration index. I am waiting for
my space/mile ratio to go above 1.5 at some point.

Could you elaborate more on this setting procedure because on the other day the dealer had mine fixed on PIS 0094, that's after three weeks of replacing a new clutch (with around 300 miles done on it)
Is that ok
Thanks

 

> Could you elaborate more on this setting procedure [...]

The procedure is trivial: plug in the Lamborghini diagnostic laptop
and select your desired PIS setting... and you are done. Then you
go drive around with the new setting to see if you want to keep it.

This takes a bit more than one trip around the block -- you really
want to go on a nice relaxed drive with all kinds of conditions.

As for technical details...

http://www.lamborghini-talk.com/vbforum/163422-post57.html

The default value is 96 hexadecimal = 150 decimal = 5.0 mm. So
every notch is 0.0333 mm. A lower value results in a biting point
at lower rpm (which makes it more harsh/crisp) whereas a higher
value results in a biting point at higher rpm (which makes it more
soft/smooth). The recommendation is to adjust the value in small
steps of no more than 3 notches at a time -- going one at a time
is really what you want... because if you can't feel that, then that
PIS setting isn't gonna make much of a difference to you anyway.

> [...] the other day the dealer had mine fixed on PIS 0094, that's
> after three weeks of replacing a new clutch (with around 300
> miles done on it)
> Is that ok

The key when replacing an E-gear clutch is to reset the settings --
that is, make the car learn the "original position when closed" and
the "current position when closed" values for the fresh clutch disk.

Otherwise it will continue to use the settings for the old disk, which
will cause the new disk to wear out really quickly. (If it was even
drivable to begin with -- you should feel this mistake right away.)

Adjusting the PIS setting is separate -- it's really just a way to fine
tune the "match" between your car's clutch and your driving style.

You don't want to over-do the PIS adjustments of course; otherwise
you end up with too much bite (bucking... to the point of stalls), or
too little bite (slip... to the point of no-go), and wear rate will suck.

 

Hi LAUTLOS

Thank u Sir, very helpful

 

Hi all, thanks for all the imput.
Just checked with a few 560 owners with more than 40000km on their cars some even crossing 50000km.
None complain about clutch slip or worn out clutch.
Readings are somehow worse than mine.
Still visiting the track and still going on strong.
Btw, it's all stock clutches that came with the car from day 1.
Strange??

 

I know that LP560 have dlifferent clutch than pre-LP. Do you experience more bucking since you have less than 20%? I have less than 20% and it bucks more now.

 

Pardon me, what do u mean by bucking

 

When you take off from a red light, there is jerkiness...That's bucking...

 

nope, no jerkin at all.
Smooth like before.