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Driveshaft? noise after Brat 5-speed swap
Posted 27 September 2012 - 11:26 AM
Posted 29 September 2012 - 05:39 PM
Since no one caught this in the pictures, I will point it out. First, you have a straight line down the drive shaft out of the tranny. By this, I mean if you drew a line down the tranny main shaft and continued it out, the drive shaft itself is inline with the tranny. No good. U-joints are designed to operate at an angle. Second, you have a different angle at the pinion. The output shaft and pinion angles must be within 1 degree of each other. How 'steep' they are is irrelevant up to a point. Go to Ace hardware and get a magnetic angle meter. They're like $6. Stick it to the pinion flange and record the angle. Stick it to the output shaft housing and measure that. They should be no more then 1 degree apart. If they are (and I can see they are in the pics) raise or lower the pinion or tail shaft until they are close. Remember, no straight lines.
Sorry but the "Angles within One degree stuff" is absolute miss information have a good look under many a rear axle vehicle the angles are never anywhere near equal at either end,Alignment of the cross yokes for the Uni's must be exactly the same and that is often a problem with retubed Tailshafts.
Posted 01 October 2012 - 11:00 PM
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