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Old 11-16-2025, 10:12 PM   #9
Moto-Mojo
Fast Cars and Old Guitars
 
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I suspect the alignment marks are for as it was balanced as a finished assembly. Dana calls this a, "System Balance." Given the flex disk ends, (Guibo) and the fact that it all operates at little to no angle, you don't have to worry about 'phasing' it. No real non uniform motion is transmitted to the diff through the center u-joint.

But if in fact it was balanced with the marks aligned like the pic, that would be inportablnt too. Nice to know about the marks.
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