Quick help, stock driveshaft pinion angle adjustment, front or rear ds?

INEEDA_TERMI

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Hey guys I swapped back to the stock shaft and am finding conflicting instructions on setting pinion angle. Which section of shafts do I use, front or rear?? :shrug:
 

nosympathy

Boss 302
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Thanks. So, why do companies like steeda instruct you to use the front?

They do? hmm. Not sure? The two piece DS, the front moves with the trans/engine and the rear moves with the axle.

Not sure why you'd measure the front? the DS is bolted to the car in the middle so the front cannot effect the pinion angle.

You measure the front most part of the rear part of the DS. Then the pinion flange.

Set my old 11 GT to a -2.0 this way, a friends 12 GT to a -2.0 this way and my 12 Boss to a -1.5 this way.
 

INEEDA_TERMI

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8. Using a standard grease gun, grease the front bushing using a synthetic grease.
9. Before driving your car it is necessary to check the pinion angle. If you adjusted the length as specified in Step 5, you will be very close to the optimum angle. To complete this procedure, the weight of the car must be sitting on the tires, on a level surface. This can be achieved by placing jack stands under the axle tubes and front control arms, or better, on elevated ramps or car lift. Joust the suspension before taking your measurements.
10. Use an analog protractor or digital inclinometer to measure the angle of the front driveshaft (Figure 5). Measure the angle of the pinion flange (Figure 6). Subtract the pinion flange angle from the front driveshaft angle to find the net pinion angle. This procedure is only applicable to the S197 Mustang (2005+) with the factory two-piece driveshaft. If you are using a slip- yoke type gearbox with a one-piece driveshaft, it will be necessary to measure the vertical angle of the transmission mounting surface of the bell housing and then subtract the pinion flange angle to find your net pinion angle. Best angles range from 2o to 5o down.
11. Adjust the new upper trailing arm center sleeve to lengthen or shorten the arm as necessary to correct the pinion angle. One degree of pinion angle change is achieved by rotating the sleeve 1.65 turns. Once you have achieved the desired pinion angle tighten the jam nuts securely against the adjusting sleeve.
12. Re-measure the net pinion angle to insure you have achieved your desired setting and adjust if necessary.


4

5

6
13. Re-check all bolts and make sure everything is secured properly.
Take a short test drive and re-inspect the installation before resuming normal driving. If you experience a vibration that was not present before the installation you probably have the pinion angle set incorrectly.
Trailing arms should be inspected regularly for safety.
e=mc2
Steeda Autosports Inc. All Rights Reserved 2005 555-4105.doc Thank you for choosing STEEDA. Any questions and/or comments on these instructions please contact us at (954) 960-0774 or e-mail us at [email protected]
 

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