430 - Exhaust valve rattle/buzz - possibly | FerrariChat

430 Exhaust valve rattle/buzz - possibly

Discussion in '360/430' started by Spleen, Jun 16, 2021.

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  1. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    Annoying buzz/rattle from the engine bay which is driving me bloody nuts. So far I've had the following done:
    • Loose exhaust tip sorted
    • LH manifold heat shield tac welded as slightly loose
    • Exhaust brackets checked - all good
    • Stripped bolt in exhaust bracket replaced
    • Twin pipe brackets tightened
    • Engine bay panels taken out and car driven, noise still present
    • Spring attached to exhaust valve for added tension - no joy
    Noise occurs at 3-3100k, warm or cold. If in sport or race and you accelerate hard from 3k the buzz just overshadows everything and it sounds like it occurs when the valves open. Below 3k nothing. Going out for spirited hoon is just frustrating because all I can hear is the noise, it's just not a clean sound.

    It's going back to GTO Engineering tomorrow for another look but just wondered if the wise and wonderful of Ferrarichat have any other ideas because I'm all out. The other question I have is can valves be economically replaced or fixed/serviced?

    Sigh.
     
  2. Sj_engr

    Sj_engr Formula 3

    Sep 15, 2020
    1,280
    San Jose
    Full Name:
    dc
    Shafts of the valves could be worn and then heat+resonance of the exhaust pressure causes to exacerbate?

    My suggestion would be to borrow a gopro and then record the event with different areas under surveillance.
     
    Spleen and NMNMNMN like this.
  3. duck.co.za

    duck.co.za Formula Junior

    Jan 9, 2007
    980
    Cape Town South Afri
    Full Name:
    Dave
    Inlet manifold throttle butterflies , for the variable inlet track length ? Just a suggestion
     
    Spleen likes this.
  4. AandSC

    AandSC Formula Junior
    Silver Subscribed

    Dec 12, 2016
    757
    Jax, FL
    Full Name:
    Allen
    Taillights rubbing against the body??
     
    NMNMNMN likes this.
  5. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    Cheers all, what I'd really like to do is find another F430 Spider and compare them side by side. My money's on knackered valves but I have no idea if they can be serviced or replaced, looking on Eurospares it seems as if they are part of the whole tailpipe assembly. Chatting with the tech yesterday (I took him out for a drive and he can definitely hear something, he's just not sure what it is) and the plan is to dismantle the valves as far as he can to see if that removes the problem. If so then at least we know where we are.

    It's crap really because this noise is really spoiling it for me, I can't unhear it and to me it's just horrible. If it can't be solved I'm not sure I can live with it. :(
     
  6. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    5,563
    Central NJ
    Full Name:
    Dominick
    A quick test would be to wrap valve with something that is fire and melt proof and sound deadening ..and see for a very small trip if sound changes etc .. just don't know what to wrap with

    Sent from my moto g power using Tapatalk
     
    Spleen likes this.
  7. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    5,563
    Central NJ
    Full Name:
    Dominick


    Sent from my moto g power using Tapatalk
     
  8. redcaruser

    redcaruser Formula 3
    Rossa Subscribed

    Apr 8, 2012
    2,419
    switzerland
    Full Name:
    daniel
    Does it matter if the roof is open or closed?
     
  9. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    The sound is always there but is much more obvious when the roof is down and the windows are up.


    Sent from my iPhone using FerrariChat.com mobile app
     
  10. redcaruser

    redcaruser Formula 3
    Rossa Subscribed

    Apr 8, 2012
    2,419
    switzerland
    Full Name:
    daniel
    Then you can rule out the soft top mechanism as the source of the fault, so that's good.

    Then the next question would be, is the noise present even when stationary or only while driving?
     
  11. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    Only when driving.


    Sent from my iPhone using FerrariChat.com mobile app
     
  12. Kent Adams

    Kent Adams Formula 3
    Silver Subscribed

    Sep 11, 2020
    1,831
    Full Name:
    Kent Adams
    cracked manifold. Do you still have the factory headers on the car?
     
  13. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    Passed the smoke test a couple of weeks ago so they’re fine.
     
  14. Scottslaw

    Scottslaw Formula Junior

    Try to disconnect the vacuum lines to the valves and see if that makes a difference. If it does, you will know you are on the right track to address the valves. I concur however that it looks like the shafts aren't really replaceable. You'd have to buy a new middle section. would probably be cheaper to buy an aftermarket exhaust!
     
  15. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    Aye, I don't think they're fixable things so it may well be that I have to replace the outer tailpipes. It's still with GTO so fingers crossed...
     
  16. Moopz

    Moopz F1 Veteran
    Owner Rossa Subscribed

    Jun 29, 2004
    5,348
    Orlando, FL
    My exhaust broke apart inside and rattled like yours. I had mine replaced with the OEM sport exhaust.

    Sent from my SM-N975U using Tapatalk
     
    one4torque likes this.
  17. ttforcefed

    ttforcefed F1 World Champ
    Rossa Subscribed

    Aug 22, 2002
    18,772
    is it a baseball card in spoke of a wheel but metallic type sound?
     
  18. one4torque

    one4torque F1 Veteran
    Silver Subscribed

    May 20, 2018
    5,090
    Houston
    Full Name:
    One4torque
    Moopz— was thinking same thing… a baffle break loose inside the muffler can.
     
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  19. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    Hmm, interesting. Not sure it does, if you recorded it and slowed it down maybe but thinking back to when I was a nipper and doing the playing card trick on my bike then no. Not heard from GTO since dropping the car off last week, will try and get an update today.
     
  20. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    So the verdict is - it's normal. I've had two different orgs look at it and beyond the most obvious problems listed above that have been fixed there doesn't appear to be anything else amiss. GTO did says that it sounds like a normal 430 and they can be a bit 'raspy' when pressing on and is not unusual on other, more newer models.

    It's my first Ferrari and I thought I would have a cleaner sound but if the noise I'm hearing is normal then I'll just have to live with it and readjust my ears. Tiny bit disappointed if I'm honest but hey-ho, at least there's nothing I have to shell out £££s on to fix!
     
  21. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    17,913
    USA
    My F355 had an exhaust rattle/buzz...it was the muffler box had a broken or cracked baffle inside. Capristo replacement muffler resolved it.
     
  22. Moopz

    Moopz F1 Veteran
    Owner Rossa Subscribed

    Jun 29, 2004
    5,348
    Orlando, FL
    Please post a video. I'm curious because I don't have any rattles normally.

    Sent from my SM-N975U using Tapatalk
     
  23. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    I don’t really have the gear to film it, I’m going to pick the car up tomorrow and have a chat with the workshop manager, see what she says.
     
  24. craze

    craze Formula 3

    Mar 5, 2021
    1,026
    Melbourne
    Full Name:
    Michael
    mine has a slight buzz noise at certain rpm like something is vibrating, cant find it!
     
  25. Spleen

    Spleen Karting

    Mar 2, 2021
    50
    UK, West Berkshire
    Full Name:
    Spleen
    What RPM?
     

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