blueovalz Posted January 15, 2006 Share Posted January 15, 2006 Some of you guys may be aware that I moved my differential over 1" to remove the angle of the offset propeller shaft. Previously (a long time ago) I had moved the differential up one inch to reduce the half-shaft angles. Well, I always had a vibration at about 80 MPH with the 4:11 gears (a combined angle of about 4.5 degrees). Now that I've move the differential toward the driver's side by 1", it is lined up with the output shaft of the transmission in a horizontal plane, but is still about 1" higher than the output shaft of the transmission in the vertical plane. Altogether, this puts the total angle of the U-joints to about 3 degrees, and completely eliminated the vibration I had in the drivetrain. I have not pushed the speed up to a point where even the 3 degrees will show up in vibrations yet though. Just a FWIW. Quote Link to comment Share on other sites More sharing options...
Dan Juday Posted January 16, 2006 Share Posted January 16, 2006 Thanks for measuring and posting the results Terry. This is the first time I can recall of anybody giving any quantifiable info on u-joint angles and vibration changes. Quote Link to comment Share on other sites More sharing options...
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