Clicking sound from belt area on Mondial | FerrariChat
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Clicking sound from belt area on Mondial

Discussion in 'Technical Q&A' started by jonathan.mccall, Oct 15, 2008.

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  1. jonathan.mccall

    jonathan.mccall Karting

    Jan 25, 2008
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    #1 jonathan.mccall, Oct 15, 2008
    sound started after parking the car on a slope. Not front to back but from Passenger to drivers side. Its (RHD) Once moved to level ground it disappeared... Now even parked on level ground every other time it clicks. Esp if its left over nite or longer... Any ideas???
     
  2. dakharris

    dakharris Two Time F1 World Champ

    Jun 7, 2001
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    #2 dakharris, Oct 15, 2008
    Belts are cold and bent and hardened in place around the pulleys. Once they heat up...a few seconds....the clicking goes away. Right?
     
  3. snj5

    snj5 F1 World Champ

    Feb 22, 2003
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    #3 snj5, Oct 15, 2008
    +1 Belts or A/C clutch wheel needs lube.
    Common.
     
  4. maurice70

    maurice70 F1 Rookie

    Jan 25, 2004
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    #4 maurice70, Oct 16, 2008
    This started happening on my car as well recently.It sounds like static electricity coming from the belts area.It only happens on first start up when the car is cold and lasts for around 30-40secs then it goes away.Anoter thing that I thought it could be is I welded a steel bung in the exhaust on the long pipe that comes from the front header to the exhaust.Its for the O2 sensor for my LM-1.The noise also sounds like metal expanding.I have't quite worked out what it is but coincidently it started making the noise after I welded the bung
     
  5. gt500blue

    gt500blue Formula 3

    Oct 18, 2006
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    #5 gt500blue, Oct 16, 2008
    My 83 308 has done this several times too. Since it is intermitten, I was alarmed and thought maybe a pulley/bearing was going bad on one of the cams or other drive pully. It does sound like it comes from the front (near fire wall) timing belt cover. I listened with a stethoscope. But it does go away after it warms up.

    I would love to understand this better to be sure it's not serious. It has not happened in the last 10 or 15 starts.
     
  6. Artvonne

    Artvonne F1 Veteran

    Oct 29, 2004
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    #6 Artvonne, Oct 16, 2008
    Static discharge from the belts is a very real possibility. I was first made aware of it by Doc Fung back on the old Ferrarilist 100 years ago, and if you sift through Gates and Daytons website you can find reference to it. My understanding is it can be quite audible, even over a Tubi.
     
  7. jonathan.mccall

    jonathan.mccall Karting

    Jan 25, 2008
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    Johnny Mccall
    #7 jonathan.mccall, Oct 16, 2008
    I see Im not the only one! Yes the clicking does go away, after a few minuites. Sometimes not until ive driven it for 30 seconds or so. It does seem to be getting worse now its got colder over here... When parked on a slope the sound is very like a colapsed bearing, which has been a worry for me for some time now...The crackling sound does disappear as soon as i move it onto level ground...It sounds like the oil hasnt worked its way around because of this... Heres hopeing!!! Is there any thing or way to lube or grease the pully wheels in there??? Even if its not doing any harm, i would still like it not to be there at all...Esp for peace of mind...A mechanic had mentioned that he had heard the spark leads on Ferraris sometimes make a sound which has led people to belive it was a belt issue...Thanks for the advise.........
     
  8. blkprlz

    blkprlz Formula 3

    Mar 24, 2007
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    #8 blkprlz, Oct 16, 2008
    +1, same here, & never reoccurs unless it sits overnight. I read somewhere on this site that belt lube cures it.
     
  9. tatcat

    tatcat F1 World Champ
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    #9 tatcat, Oct 16, 2008
    this mystery and it's fix was just explained to me by one of our resident gurus. seems the pulleys get some corrosion on them and when the belts are cold and stiff the pulleys grab at the belts and they snap until they warm up. the fix is to carefully take some sandpaper and while the motor is running clean the groove on the pulley.
     
  10. eurogt4

    eurogt4 Karting

    Apr 15, 2006
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    #10 eurogt4, Oct 16, 2008
    You can lose part of a finger (or worse) doing that. Don't ask how I know.
     
  11. jonathan.mccall

    jonathan.mccall Karting

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    #11 jonathan.mccall, Oct 17, 2008
    Last edited: Oct 17, 2008
    Sounds interesting!!! Is that explanation on a thread some where??? Im def not gonna take a chance im going in there to find out!!! Once the car is off the road for the winter that is... That question i shouldnt ask doesnt bare thinking about...
     
  12. finnerty

    finnerty F1 World Champ

    May 18, 2004
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    #12 finnerty, Oct 17, 2008
    Yup --- situation is normal on the older V8's that run the thin "plastic" v-belts.

    When I first got my 308, I started it up one cold morning, and about had a heart attack! The belt snapping was so loud and sharp that I thought I had a broken valve spring or a dropped valve seat!

    Once the engine warmed up --- the noise disappeared. I rushed the car over to my mechanic immediately, and he just starting laughing and explained to me what was happening.
     
  13. jonathan.mccall

    jonathan.mccall Karting

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    #13 jonathan.mccall, Oct 17, 2008
    Ha i was pretty much the same... big panic on big time... I only bought the car last December and it never did it until the summer... I was convinced something was gonna go, quite scarry id say... You are lucky to get advice from youre mechanic... There isnt many over here that have any idea esp classic F cars over here!!! My Mates a mechanic and he thought ther wasnt much to worry about...Happy days...
     
  14. mg54

    mg54 Rookie

    Jan 12, 2005
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    #14 mg54, Oct 28, 2008
    It is defiently your belts. Mine drove me crazy for about 10 minutes with a cold start. I sprayed some belt dressing on the ac belt and it went away. After a while, i cut the belt off because I don't use the ac anyway and have not heard a thing..
     
  15. magspider

    magspider Karting

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    #15 magspider, Oct 28, 2008
    problem is your a.c compressor. The clutch is sticking Had the same problem on my 86 mondial
     
  16. jonathan.mccall

    jonathan.mccall Karting

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    #16 jonathan.mccall, Nov 1, 2008
    Yeh think i will just have to live with it... I took the cover off and started it several times, just to make sure... I also rang the garage that last serviced her in 2007... It had a 18.750 mile service which includes belts... They reasured me that the tensioner bearings were replaced...
     
  17. Glassman

    Glassman F1 World Champ
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    #17 Glassman, Nov 1, 2008
    That fix is just about as crazy as the idea of cutting your cam belt in half with the engine running. I really hope nobody is thinking seriously about this idea. I get queezy just thinking about it. I once saw a guy with long hair get scalped by a belt sander. Not a pretty sight.
     
  18. snj5

    snj5 F1 World Champ

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    #18 snj5, Nov 1, 2008
    +1
    see post 3 - mine was cured with some spray lube.
     
  19. ronfrohock

    ronfrohock F1 Rookie
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    #19 ronfrohock, Nov 1, 2008
    Only when is has been sitting for a while.
    I feeked out and took it to the dealor and they told me the same thing, about the AC belt.
    Havent worried about it sience.
    - ROn
     
  20. CliffBeer

    CliffBeer Formula 3

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    #20 CliffBeer, Oct 28, 2009
    Have to resurrect this old thread here - had the same problem on my '88 mondial....a fairly loud clacking sound in the neighborhood of the AC pump belt. I just changed my belts and tensioner bearings so I knew it wasn't something in there. I replaced the AC pump belt et voila, noise gone. She runs and sounds just like she should.

    Thank you to the posters above for pointing me in the right direction in solving this one!
     

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