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Great video on clutch life and setting the PIS

Discussion in '360/430' started by CoreyNJ, Jun 20, 2021.

  1. CoreyNJ

    CoreyNJ Formula Junior
    Silver Subscribed

    Apr 17, 2006
    776
    New Jersey Shore
    Discovered this guy a few weeks ago. He just posted this cool video. I know much of this has been discussed here before, but seeing and hearing the car as he drove and explained things was very interesting.






    Sent from my iPad using FerrariChat.com mobile app
     
    colorfull and Red 27 like this.
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  3. carguy007

    carguy007 Formula Junior

    Apr 24, 2013
    481
    Its pretty crazy he set PSI to 1.78 considering my car is set at 4.7.
     
  4. ifeelfree0

    ifeelfree0 Formula Junior
    Silver Subscribed

    Feb 26, 2014
    344
    Medina, Ohio
    Full Name:
    Dan
    Ditto....that didn't line up with me either. My indie swears around between 4.3- 4.7. Go lower for quicker shifts but sacrifice wear. Choices, choices....
     
  5. carguy007

    carguy007 Formula Junior

    Apr 24, 2013
    481
    IS it the opposite - quicker shifts would mean less wear theoretically.
     
    Island Guy and sparetireless like this.
  6. Flyingbrick242

    Flyingbrick242 Formula Junior
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    Feb 26, 2017
    349
    So. Cal
    I agree that setting did sound very odd..
     
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  8. ifeelfree0

    ifeelfree0 Formula Junior
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    Feb 26, 2014
    344
    Medina, Ohio
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    Dan
    I am with him on Wed....I'll get it from the horses mouth.o_O
     
  9. carguy007

    carguy007 Formula Junior

    Apr 24, 2013
    481
    Nice - I am in San Francisco. Seems like we may all be Norcal.
     
  10. sparetireless

    sparetireless Formula 3
    Silver Subscribed

    Nov 2, 2003
    1,442
    i set mine so it rolls slightly in 1st with no gas and no brakes, just barely rolls in 1st on level ground, so far 61,000 miles on the same clutch and shifts fast.

    I do go to N on red lights.
     
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  11. carguy007

    carguy007 Formula Junior

    Apr 24, 2013
    481
    That’s impressive. I thought it was piontless to go to neutral at red lights. You think it wears throw out bearing if you leave in gear? What’s your thoughts? You are doing something right to make it last 60k miles. Mine is set up same, so it rolls slightly in first. I do have to feather first a little to get moving with no slip and typically fully disengage clutch around 1200rpm.
     
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  13. Sj_engr

    Sj_engr Formula Junior

    Sep 15, 2020
    447
    Full Name:
    cd
    Unless sitting for a really long time, I found shifting into Neutral to be a pain. I read in another thread that the 360 throw out was pressed against the pressure plate so that it always spun w the crank. Is that accurate and is the F430 the same?
     
  14. jag-oo-r

    jag-oo-r Formula Junior

    May 27, 2015
    387
    I once had a n employee whose greatest asset was that he could speak with authority, even when he knew nothing about the subject.

    The guy in the video seems like a great guy, but when he makes an entire video about the single-clutch setup and adjusting the PIS, but tells you mid-point that he has "no idea what it even means", well I'll be honest: he lost me. (not difficult to know what it means, as it's pretty clearly described in the owners' manual and the shop manual, and pretty much ANYWHERE you look on the internet)

    He speaks of rev-matching on down shifts, like it's something he's doing himself..... I think we all know better.
    He talks about how he sets the value with his Leonardo, but he doesn't talk about how he CHOOSES a setting/value, except to say that it's a compromise between himself and the other driver. And then the value he comes-up with eschews all conventional wisdom and 15-years of others' experience.
    I'm not saying it can't be correct; but when one bucks the conventional without an explanation of how or why, one loses credibility.

    I guess I'm saying "Eyes Wide Open". I wouldn't follow this video blindly. Add it into all of the rest of the sources available and make your own determinations.
     
    ifeelfree0 likes this.
  15. GCalo

    GCalo F1 Veteran

    Sep 15, 2004
    7,090
    Northern California
    Full Name:
    Greg Calo
    I think this one offers a great deal more.

    This person obviously knows the F1 system quite well

    It's for Maserati but it's the same and he'll indicate that

    One other note with respect to the Launch X431 V Pro

    There is a red case version and a black case version.

    The black case version is $50.00 cheaper!

     
  16. sparetireless

    sparetireless Formula 3
    Silver Subscribed

    Nov 2, 2003
    1,442
    I don't think it hurts the TO bearing. I think it spins all the time no matter what, but I cant swear to it. I figure if it rolls slightly in 1st, it might be better to just set in N at long lights. No idea if it does anything, but I think it does. 61k miles is for real.
     
  17. Felix Yuen

    Felix Yuen Karting
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    Sep 3, 2018
    108
    Full Name:
    Felix Yuen
    i go to N every single time i come to a full stop
    it was a habit i developed driving manual cars i think it's better for the car simply because there are no springs being stretched
    nothing being pressed ...the car is in it's neutral state.


    can someone explain what PIS do ?
     
  18. jag-oo-r

    jag-oo-r Formula Junior

    May 27, 2015
    387
    "Punto di Incipiente Slittamento" or, "Point of Initial Slip".
    This is a measurement (in mm) which informs the TCU where the clutch begins to engage as it moves. (in the driver-training world, we call this the "Friction Point".)
     
  19. Felix Yuen

    Felix Yuen Karting
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    Sep 3, 2018
    108
    Full Name:
    Felix Yuen
    good info ... so what do i set it at for MAX clutch life on a street car
     
  20. Flyingbrick242

    Flyingbrick242 Formula Junior
    Silver Subscribed

    Feb 26, 2017
    349
    So. Cal
    Great vidio very informative. I found it interesting how he concentrated on clutch wear index and how the PIS effects this which is 100% correct it would have been nice if he included how the PIS and gearbox input shaft speed are being effected at the same time.
    I could have done without the background music.
    I could not catch what SW version he was running..
    Overall very good.!
     
  21. jag-oo-r

    jag-oo-r Formula Junior

    May 27, 2015
    387
    You're referring to that second video, not the first, I think? Yes?

    Sent from my SM-G991U using Tapatalk
     
  22. Flyingbrick242

    Flyingbrick242 Formula Junior
    Silver Subscribed

    Feb 26, 2017
    349
    So. Cal
    Yes sir..its the one above..
     

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