355 - F1 Lift to shift? | FerrariChat
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355 F1 Lift to shift?

Discussion in '348/355' started by watkinsgt, Jul 22, 2023.

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  1. watkinsgt

    watkinsgt Karting

    Feb 4, 2008
    215
    #1 watkinsgt, Jul 22, 2023
    When I purchased my 355 F1 in '99 the salesman said 'momentarily lift off the accelerator when manually shifting gears...releasing the pressure is beneficial'. So, ever since I've lifted when shifting - both up and down. Seemingly to no ill effect. The other day I read a 458 owner's manual and it said NOT to lift when shifting. This caused me to check my 355 F1 manual and - sure enough - it says the same thing - don't lift when shifting. I've been doing it wrong for 23 years. Since then I've made a point of not lifting when shifting. But golly some of those shifts slam home pretty hard! Both up and down. And not just when pressing. In relaxed driving as well. What are you guys doing? Lifting to shift? And Why?
     
  2. Mitch Alsup

    Mitch Alsup F1 Veteran

    Nov 4, 2003
    9,721
    #2 Mitch Alsup, Jul 22, 2023
    458 transmission is 15 years of advancements over the F355 transmission. In addition the clutches for 458 are between flywheel and transmission input; while F355 has a foot long shaft between the crankshaft and the flywheel. So, there are enough differences to alter standard mode of use.

    And, yes the manual says F355F1s don't have to either, and many people "enjoy" getting less than 30K miles on a clutch assembly.
     
  3. JSBMD

    JSBMD Formula Junior

    Mar 17, 2007
    450
    The OC
    Full Name:
    John
    #3 JSBMD, Jul 23, 2023
    355 was the last of the throttle cable engines. So what you do with your foot directly affects what fuel/air go into the intakes. 360 and newer use "drive by wire" meaning the throttle pedal has a sensor to see what you tell the throttle to do, and also a servo at the intake plenum to enact your throttle inputs PLUS WHAT ELSE IS PROGRAMMED INTO THE FUEL INJECTION ALGORITHM.

    So if you slightly lift on the throttle when upshifting your F1 355, there will be slightly less torque on the clutch/flywheel/transmission, and you'll see a smoother shift. The newer cars do this for you, whether you realize it or not-- it's programmed in. This also extends the lifespan of every component in the system, meaning you should be doing this.

    When downshifting, on the other hand, you should be momentarily adding a bit of throttle, to bring the revs up, matching the revs anticipated in the lower gear, smoothing the downshift. This not only sounds very cool, it eases driveline shock, extending life of all the components. Again, the newer cars do this for you whether you realize it or not, because it's programmed in.

    Lastly, no use comparing our cars to the 458 or newer, as Ferrari switched to dual clutch transmissions after the 430.
     
  4. Ferrarium

    Ferrarium F1 Veteran
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    Jul 28, 2018
    5,728
    Central NJ
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    Eric
    #4 Ferrarium, Jul 23, 2023
    My 348 is dual clutch and when it grabs it f'in grabs with authority like a gear lock. :)
     
  5. watkinsgt

    watkinsgt Karting

    Feb 4, 2008
    215
    #5 watkinsgt, Jul 24, 2023
    Thank you Mitch Alsup, JSBDM and Ferrarium for you insightful replies. Made perfect sense. I will lift to shift on the 'up' and rev match on the 'down'.
     
  6. Ferrarium

    Ferrarium F1 Veteran
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    Jul 28, 2018
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    Eric
    #6 Ferrarium, Jul 24, 2023
    It's called mechanical sympathy, your car will thank you for it. Enjoy
     
  7. Targatime

    Targatime Formula 3

    Feb 22, 2014
    1,449
    Los Angeles
    #7 Targatime, Jul 27, 2023
    I believe the TCU/ECU cuts the injectors for a split-second while shifting.
     
    MAD828 and Rifledriver like this.
  8. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,089
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #8 Rifledriver, Jul 27, 2023
    Exactly. No torque being generated until clutch fully reengaged.
     
    BenjaminB likes this.

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