360 - Crunching noises in low speed turns | FerrariChat

360 Crunching noises in low speed turns

Discussion in '360/430' started by C360S, Oct 22, 2020.

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  1. C360S

    C360S Karting

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    Hi guys
    I have a CS which is recently starting to make crunching rotary noises when executing slow speed turns either left or right. Going straight and turns at higher speeds are ok. Is this due to my wheel bearings wearing out ?
    Cheers
     
    C360S, Oct 22, 2020
    #1
  2. flash32

    flash32 F1 Veteran

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    Can it be the diff clutch disks ..did you recently change the type of gear oil used ?

    Sent from my moto g(7) using Tapatalk
     
    flash32, Oct 22, 2020
    #2
  3. LP360

    LP360 Karting

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    I had a similar issue about 3 months ago, mine turned out to be the front brake discs and pads were needing replacement. Replaced and no strange noise anymore so maybe worth a check.
     
    LP360, Oct 24, 2020
    #3
  4. sparetireless

    sparetireless Formula 3

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    bad engine mounts is my vote
     
    sparetireless, Oct 27, 2020
    #4
  5. KC360 FL

    KC360 FL Formula 3

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    Could it be CV joints? At times I've heard some sort of a similar noise. Low speed, turning at full lock into a parking space. Not always but concerning none the less.
     
    KC360 FL, Nov 2, 2020
    #5
  6. gatago

    gatago Karting

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    Marco
    pull off the wheel, check the brakes like lp360 suggested. I don't think this is it but worth a try. If noise is coming from the front, next remove the brake caliper and spin the hub with no pressure, then while pushing it, then while pulling it. it should spin smooth as butter, (though maybe not super easy) any grinding or rubbing feeling and you have a bad bearing. If you're unsure, take the other wheel/brake off and compare the two.

    On my 430, I had some noise coming from the back during turning (I'm sure fast too just couldn't hear it) and it turned out to be a worn tierod. I replaced both and noise went away. Not sure if 360s have those or not. but it's worth a check.
     
    gatago, Nov 2, 2020
    #6
  7. SAFE4NOW

    SAFE4NOW F1 Veteran Sponsor Owner

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    If you know you know
    How old are your tires and did this start with the drop in temperatures?
    Summer / Performance tires can make a rotational " crunching " type sound when cold on cold pavement when turning.
    Just a WAG on the internet!

    S
     
    SAFE4NOW, Nov 2, 2020
    #7
  8. KC360 FL

    KC360 FL Formula 3

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    My 360 has about 26K miles. The brake pads were changed right before I bought it @ 21K miles. No track events just fun around town. I haven't had the time to check it out but it does sound like a suspension link of some sort. More of a light clunk instead of a "crunch". Only hear it on the rear-- that I can tell. Car tracks straight and true with no odd handling.
    I'm in Florida so tires almost never are "cold" and I only hear it after I have "heated" them up just fine ;)
     
    KC360 FL, Nov 3, 2020
    #8

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