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03-11-2014 #4
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- Jan 2011
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- Boston, MA
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From their FAQ's:
Originally Posted by mmosley
In other words...They don't know either. Originally Posted by Hotchkis
Q) Is there an optimum pinion angle?
Answer: Due to the nature of an automobile chassis, the various angles are constantly changing, which adds to the complexity of obtaining optimum pinion angle. Engines may not sit squarely in their motor mounts, motor mounts may not sit properly between the frame rails, cross members may not sit straight, and where the rear end is positioned. Despite all these factors affecting the positioning of our drive trains, they seem to work well enough in most cases, at least on the street in basically stock applications. We owe this functionality to the universal joint, which, by design, corrects for slight misalignments between the driving components (crankshaft and transmission) and the driven components (driveshaft and differential) of the drive train. (Please see the tech section to learn how to set your pinion angle.)
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