A GENUINE KIND of gear replacement for 63307100 f355 timing actuator | Page 5 | FerrariChat
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A GENUINE KIND of gear replacement for 63307100 f355 timing actuator

Discussion in '348/355' started by vincentf355, Sep 16, 2024.

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  1. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    #101 vincentf355, Jul 28, 2025
    I looked back what I posted earlier in this thread, there should be 5 wires since it is a 5 pin potentiometer for a very common actuator across many brands like VAG, Fiat, etc.

    However, even with 5 wires, still not sure if it functions the same as original 63307100 potentiometer?

    [​IMG]
     
  2. vincentf355

    vincentf355 Karting

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    vincent tseng
    #102 vincentf355, Jul 30, 2025
    Last edited: Jul 30, 2025
    FYI I just got the confirmation with a photo from one of the vendors I had checked.

    5 wires. Partially putting together a puzzle!

    Image Unavailable, Please Login
     
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  3. Qavion

    Qavion F1 World Champ
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    #103 Qavion, Jul 31, 2025
    You'd have to check the range of motion and the shape/size of the drive. I'm not sure about the potentiometer value. The ECU may be able to calculate the resistance range, but I guess it would depend on whether the pot was linear or logarithmic.
     
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  4. m.stojanovic

    m.stojanovic F1 Rookie
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    Miroljub Stojanovic
    #104 m.stojanovic, Aug 1, 2025
    Last edited: Aug 1, 2025
    Yes, the actuator's range of motion is important, i.e. it would need to be similar to that of the original actuator. As for the potentiometer, the AC ECU does not work with the pot's resistances but with the voltages it receives from the pot's middle pin. Being a voltage divider, a potentiometers will, for a given fixed voltage at its end pins, produce the same voltage on its middle pin for various rotational positions irrespective of whether it is a 5K or 10K or 100K potentiometer.

    Otherwise, potentiometers in actuators are always linear. The logarithmic pots were developed mainly for the volume control on amplifiers to be in line with the human hearing which is logarithmic.
     
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  5. vincentf355

    vincentf355 Karting

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    #105 vincentf355, Sep 9, 2025
    Erik, it has been relisted on ebay.

    However, delivery to USA becomes unavailable and/or very expensive due to the end of of the "de minimis" exemption.

    There could be a workaround if you are still interested.
     
  6. eckeph

    eckeph Rookie

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    #106 eckeph, Sep 15, 2025
    Ahh, ok... I have however already bought another cog wheel
     
  7. vincentf355

    vincentf355 Karting

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    #107 vincentf355, Sep 25, 2025
    Last edited: Sep 25, 2025
    For US, I managed to have a limited local stock in early November so there should no import tariff.

    If anyone interested, let me know by mid of October to ensure the supply.

    The next window is not foreseen.
     
  8. vincentf355

    vincentf355 Karting

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    vincent tseng
    #108 vincentf355, Oct 9, 2025 at 1:34 AM
    Last edited: Oct 9, 2025 at 1:42 AM
    Glad to know that post office delivery to US is now back under certain condition. Local stock plan is removed.

    It can be ordered on ebay now.

    For those reserved, I managed to specially provide $20 off to thank you very much for the patience and interest.
     
  9. Timmo

    Timmo Formula Junior

    Aug 26, 2017
    709
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    #109 Timmo, Oct 9, 2025 at 2:12 AM
    Do you also make the gear for the recirculation motor 63306700 ?
     
  10. vincentf355

    vincentf355 Karting

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    vincent tseng
    #110 vincentf355, Oct 9, 2025 at 2:42 AM
    Last edited: Oct 9, 2025 at 2:56 AM
    Are you referring to the gear inside the red circle?

    Several of mine are broken as well.

    Yes, I can do that. It is only one piece and not that complicated as two piece 63307100 gear.

    However, I think 63306700 is still available with no crazy price. I have also a few NOS on hand but the aging plastic gear is not guaranteed not to be broken someday.

    Second, I have opened several 63306700. To open the case intact is almost impossible. The most I can do is leave it 80% intact but no signs could be found after putting case back.

    If you come to me, either NOS or replacement gear could be provided.
     

    Attached Files:

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  11. Timmo

    Timmo Formula Junior

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    #111 Timmo, Oct 9, 2025 at 4:21 AM
    Last edited: Oct 9, 2025 at 4:29 AM
    Thanks. I'll have to check which gear was broken when I pried mine open last year as I can't remember right now, but it must be the output gear, as circled in your picture.

    Back to the vane motor (63307100), I can hear mine being loud only when turning the ignition on the first time after reconnecting the battery, as it seems to cycle for about 10s. When the engine runs and the car drives the vane motor does work (the orientation of the vane changes as required when turning the knob on the control panel) but does so without making any noise. Why is that?
     
  12. vincentf355

    vincentf355 Karting

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    vincent tseng
    #112 vincentf355, Oct 9, 2025 at 4:41 AM
    All my cracked gears of several 63306700 are always the middle layer gear as red circled. I saw others same.

    Well, it is because each movement between each knob position is slight as well as back and forth which yields only short or no noise when around the not yet cracked portion. You would realize what I meant after you see the photos/video I posted in #34 page 2.

    Believe me, when it sounds loud during full movement of 270 degree calibration on car, if I recall it right,, it surely is the sign of a partially cracked gear which is almost gone.
     
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