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Mike S.

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  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    Getting ready to buy a Cayman S
  • Future cars
    2007 Cayman S
  • Former cars
    1986 944 Turbo

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Mike S.'s Achievements

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  1. Guys. This topic has been discussed at great length at www.CaymanClub.net. There are dozens of threads discussing it over there. It appears to be a common and still unsolved problem affecting the Cayman. The clunk is caused by a resonant counter weight that is installed in the hatch itself. Because the hatch is quite heavy and it sits on a flexible rubber seal, when the car goes over an abrubt bump the rubber seal will compress and the hatch will vibrate. Because it has a lot of surface area, this sends a loud audible bass note through the car. The weight changes the resonant frequency of the vibration, making it sub sonic so it's not so noticable, and it dampens the vibrations. The problem is, in certain conditions the weight itself will hit the edge of the opening in which it is installed, creating a metal to metal clunk that is annoying the h$&% out of Cayman owners. It also appears to be more less prevelant on cars equipped with PASM because of the softer ride. One of the members over there assembled a very verbose article documenting a home grown fix. Most all members who have tried the fix report back that it works. Take a look for yourself: http://www.caymanclub.net/reviews/showprod...uct=7&cat=6 I also suggest visiting the Cayman Club and searching for 'Clunk', 'Suspension Noise', or 'Boom'.
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