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Old 05-11-2014, 10:49 AM
Cummmins Cummmins is offline
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Join Date: May 2009
Location: Boise, ID
Posts: 149
That sounds reasonable, Stretch. Supposedly the motor mounts were replaced about a month before I bought the car, which would make them just over a year old. I have not yet replaced the engine shock bushings, or tested them to see if they are still good. I wonder if the passenger side shock/bushings are so worn that the motor is bouncing up a little then slamming down going over a speed bump at just the right speed. I do have a go pro camera that I could mount on the car and watch what is happening. But, I am moving soon so that it is packed right now.
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1985 300D 296,000 miles - Project "Rusty" 1/4 mile in 19.9 sec @ 71mph. It's almost rust free and water proof!

2006 Dodge/Cummins 6-Speed - 670HP 1159ft/lbs
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