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Irritating Rattle

Discussion in '348/355' started by Buzzl, Feb 9, 2020.

  1. Buzzl

    Buzzl Karting

    So I got grommet installed and still have rattle. My next area to explore would be where the engine cradle attaches to the upper right hand side of the car. Could be a loose bolt. I will probably have to remove the oil tank to have access to these bolts. It’s a process of elimination. Any thoughts?
     
  2. 348Jeff

    348Jeff Formula 3
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    Oct 25, 2011
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    Jeff
    What about the srung brackets securing the exhaust box? Also, the rear bumper mounts?

    If it was me I would go around the components and and try and grab each piece and try and shake it in cae there is any pay?

    One final thing sometimes the arch liners can not be secured to the inner lip of the wheel arch or to each other?
     
  3. Buzzl

    Buzzl Karting

    It’s sounds like someone is taking a hammer and tapping on the firewall right behind the passenger seat. Almost sounds like it’s inside the cabin.
     
  4. m.stojanovic

    m.stojanovic Formula 3
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    Dec 22, 2011
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    Miroljub Stojanovic
  5. Buzzl

    Buzzl Karting

    Will do, what is the torque value of the subframe bolts? Thanks
     
  6. m.stojanovic

    m.stojanovic Formula 3
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    Dec 22, 2011
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    Miroljub Stojanovic
    I have been unable to find the torques for the subframe bolts. If the knock is from there, you will find the bolts rather loose so just tighten them by feel judging by the bolt diameter. If you are able to measure the diameter of the bolts and see their grade (stamped on the bolt head, probably 8.8 or 10.9), you can then use the table below for the torque setting.

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  7. Buzzl

    Buzzl Karting

    Thanks Stojanovic, all is well at that location.
     
  8. Buzzl

    Buzzl Karting

    I’m thinking it could be the right rear shock causing a rattle. Could the shock be malfunctioning and causing the noise? If so, what next, shock is not leaking. All bushings seem to be tight and ok as I pried around the areas. For a noise to occur I would think the shock would be very stiff. Any thoughts?
     
  9. taz355

    taz355 F1 Veteran
    Silver Subscribed Owner

    Feb 18, 2008
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    Grant
    I thought you had a berlinetta
    What about the tank and pump for the soft top.
    The problem is like others have said you should go shake things
    There is a lot of potential possibilities.
    Just thought of something else,
    A loose battery in behind the passenger front tire
     
  10. Buzzl

    Buzzl Karting

    Thanks Taz, I’ll check those
     

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