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Setting Pinion Angle
We paid a visit to Currie’s shop in Anaheim, California, home of Mickey Mouse and the Magic Kingdom, to observe the method he uses to measure pinion angle. Currie takes the process one step further by factoring in the transmission output shaft’s angle in determining where the pinion angle should be set.
Sometimes corrections need to be made at the front of the vehicle to ensure that the engine and trans are sitting in the proper location. According to Currie, the average car crafter should strive for between 1 and 3 degrees between the tailshaft of the transmission and driveshaft, and 1 to 3 degrees between the driveshaft and pinion. Furthermore, the two angles should be nearly equal (between 1 and 3 degrees), but always opposite (see crude diagram)
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How To Set Pinion Angle