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Old 10-12-2014, 05:24 PM   #1
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Help on pinion angle measuring

I have the Eibach pro-kit springs installed on my car with stock shocks/struts. This lowers it 1" in front and 1.5" in back. I am worried about the effect these springs have on the pinion angle. So I'm asking you all if 1. If the pinion angle is even negatively affected with these specific springs and 2. If it's possible to measure the pinion angle on a pair of ramps under the rear tires since I don't have a lift. Thanks a lot for any help!

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Old 10-12-2014, 05:37 PM   #2
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You will see some effect from these springs but, how bad depends on where it started. You can measure the pinion angle in any way the suspension is naturally loaded and stationary. It's the included angle of the driveshaft and pinion housing, relative to one another.

Use an angle finder to measure the DS on the rear 1/2 of the DS, then on the edge of the pinion flange. Take the first number and subtract the second. You should have between 1-2 degrees negative on a 3 link street car.

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Old 10-12-2014, 11:45 PM   #3
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I have the pro-kit springs and my pinion angle was within spec. It is hard to measure on ramps but not impossible. Easier to put all 4 corners up on the same height ramps.

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