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Old 08-10-2010, 09:17 PM   #27
Doc Weaver
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Join Date: Jun 2008
Location: West Chester, Ohio
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well I did a little more to quieten down the Freightshaker.

1) the noise from the tranny seemed be as loud as the engine, so I gave it another look. The hole for the gear shifter was letting lots of noise through the floor. I took three pieces of sound barrier and pushed them down the gear shifter. the bottom one was big enough to put under the boot bracket. The hole has to be big enough for the shifter to move. the second one was the size of the inside of the boot. the top one was to make a tight fit over the movement hole.

2) I changed the tranny oil to Royal Purple synthetic. It is supposed to have a thicker gear film (the stuff that clings to the gears) so that the gears actually never touch. Acoustically that would decouple the sound and keep it from traveling from gear to gear. It would also protect the gears more.

I don't know how much each one helped, but it absolutely make a difference. The sound level is 5 to 10 db quieter. Little by little its getting better.

Doc Weaver
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