[Healeys] Scuttle Shake

rrengineer at dslextreme.com rrengineer at dslextreme.com
Fri Sep 14 23:23:56 MDT 2007


Is Scuttle shake a 6 cylinder phenomenon or are the 4 cylinder cars
affected by it also?  My car is almost ready to paint, so it's not too
late to install this mod.
Mike MacLean
56 BN2
60 AN5


Tom Felts
> FWIW, I had this mod done to my BJ8.  It made a noticable difference.
>
> tom
>
>
>> [Original Message]
>> From: <TRICARB at aol.com>
>> To: <38derby at suscom-maine.net>
>> Cc: <healeys at autox.team.net>
>> Date: 9/14/2007 8:52:00 PM
>> Subject: Re: [Healeys] Scuttle Shake
>>
>> Jon,
>>     I had the pleasure of discussing this phenomenon at  length with
> Geoff
>> Healey.
>> He says that the vibration frequency of the box frame and the interior
> body
>> panels are not the same.  They come together for a harmonic frequency at
>> about 55 MPH.
>>        Jensen spot welded the interior  body to the frame, thus it is
>> not
> a
>> solid structure with the frame.
>>     The phenomenon gets worst in the later Healeys as  Jensen increased
> the
>> spacing of the spot welds to save costs.
>>     The solution, that I have found is to weld 1/2" x  1/2" angle iron
>> on
> the
>> inside of the transmission opening extending the angle  iron down and
> welded
>> onto the box frame.
>>     This ties the inner body to the frame making it one  vibration
> entity.
>>     I have attached a photo of the installation  outlining the angle
>> iron
> in
>> red.
>>         Bill  Bolton
>>
>>
>>
>> ************************************** See what's new at
> http://www.aol.com
>>
>> [demime 1.01d removed an attachment of type image/jpeg which had a name
> of healey & shroud 003.jpg]
>> _______________________________________________
>> tomfelts at earthlink.net
>>
>> Healeys at autox.team.net
>> http://autox.team.net/mailman/listinfo/healeys
> _______________________________________________
> rrengineer at dslextreme.com
>
> Healeys at autox.team.net
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