360 Belt Squeal/Chirping - Help | FerrariChat

360 Belt Squeal/Chirping - Help

Discussion in '360/430' started by Michael_1982, Apr 5, 2025.

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  1. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    Hi all

    I’ve had what I believe to be a belt squeal/chirping for a couple years now. The squeal/chirping is present only after the car is at temperature (say after 20mins of driving), and can be annoyingly heard quite loudly as the car comes to a stop. Sometimes after about 5-10 seconds stationary the squeal stops - Only to start again not long after takeoff (5-10secs)

    I’ve tried tackling this from a few angles to eliminate possible causes - Timing and services belts, tensioner bearings, water pump but the problem still persists.

    Anyone had anything similar and if so how did you tackle the problem?
     
  2. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,675
    Central NJ
    Full Name:
    Dominick
    Did you use freq meter to tune aux belts
     
  3. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    The belts were all done through Ferrari dealership so assume was all done to correct spec.
     
  4. EastMemphis

    EastMemphis Formula 3
    Owner Silver Subscribed

    May 25, 2019
    1,825
    Memphis, TN
    Full Name:
    John
    It might not be a belt. It might instead be your headers committing suicide.
     
  5. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,675
    Central NJ
    Full Name:
    Dominick
    I think a video or sound clip would help

    Honestly it could be anything ..even a throw out Bearing .. try to record it or use a mechanic stethoscope to isolate it

    I just threw out the aux belts freq check because one of the people I helped this week had a squeak but only cold and it was the tension of the belt
     
  6. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    Possible but unlikely - I would assume if it was headers the squeal/chirping would be consistent at temperature vs coming and going
     
  7. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    Thanks Eric - I’ll see what I can do.
     
  8. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,675
    Central NJ
    Full Name:
    Dominick
    Eric ? My name is Dominick :)
     
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  9. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    :) Sorry Dom
     
    flash32 likes this.
  10. DiSomma6

    DiSomma6 Karting

    Nov 27, 2023
    138
    Full Name:
    Erik
    I had (knock on wood) the same issue. At idle, there would be a random chirping/squeaking with an unknown cause. Never affected performance but embarrassing when pulling up to a crowd, which was when it typically made the noise.

    After daily driving the car for a few months, it went away. That was 20K miles ago last year.
     
  11. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    Yer - sounds the same as what I’m experiencing. I do only take the car out on occasion but may try to a few longer runs and see if that makes any difference.
     
  12. collegeboy

    collegeboy Formula 3
    Silver Subscribed

    Aug 25, 2007
    1,311
    Texas and Kaua’i
    Full Name:
    Mikey
    Don’t assume that it was done right. Trust me.
     
    Michael_1982 likes this.
  13. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    Agreed Mikey
     
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  14. Motob

    Motob Formula 3
    Professional Ferrari Technician

    Nov 11, 2003
    2,343
    Frederick, Maryland
    Full Name:
    Brian Brown
    Ferrari lists the incorrect belt frequency specifications in the regular 360 repair information. The only manual that has the correct specifications is for the 360 Challenge Stradale. There is a possibility that the dealership used the incorrect specification when setting the belt tension.
     
    flash32 likes this.
  15. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    6,675
    Central NJ
    Full Name:
    Dominick
    Good info ..can you elaborate ..which belt ..aux or timing
    .what is the right freq

    Would love to know .. Tia
     
  16. Art H

    Art H Karting
    Rossa Subscribed

    Apr 15, 2014
    160
    I can’t believe I’m reading this thread. I was about to place my question while I was coming across this thread. I have a 360 F1. It has 42,000 miles and I just did a complete belt service, tensioners, and water pump. the car made squeaky noises consistent with the rotations of the engine, only at very warm temperature. After the work was done, the car ran great for a couple of weeks. But now, especially with warmer temperatures, the noise came back when the engine was up to temperature. Although the noise is not as bad, as before, it’s still there and it’s very annoying after all that money was spent to eliminate it.
     
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  17. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    Interesting comment - first I’ve heard of this.

    my understanding was frequency tension meter, aims for a reading between 190 and 220,
     
  18. Pete Schweaty

    Pete Schweaty Formula Junior

    May 21, 2014
    264
    20k miles ago last year? Am I reading that right?
     
  19. Michael_1982

    Michael_1982 Karting

    Mar 15, 2020
    93
    Perth
    Full Name:
    Michael
    Based on the comments from some owners in this feed It’s seems this issue is common and a few of us have been exploring different solutions (Headers, Waterpump, Bearings, Tension frequency etc). If anyone does find a solution that’s worked for them please do share, keen to know what’s worked for others.
     
  20. KJB355

    KJB355 Karting

    Apr 4, 2006
    152
    Chicago
    Full Name:
    Kenneth Brom
    I solved this problem by replacing the motor mounts and adjusting the CV heat shields down a bit. The crease of the header shield came into contact with the heat shield and created the chirp sounds. Sort of like nails on a chalkboard in short sound bites. I exhausted every option thinking it was belt related.
     

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