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Thread: Pinion Angle
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03-10-2010, 06:22 PM #1
Pinion Angle
I just want to make sure I did this correctly. With the car on its wheels and the suspension settled (bounced the car a few times and let it sit for a bit) I used a digital level on the driveshaft and the bottom plate on my torque arm at the differential. The driveshaft points down 2.4 degrees, so -2.4. The rear points up 0.9 degrees after adjustment, so +0.9. Adding the two numbers yields negative 1.5 degrees. Did I do that right?
(Like Iroc, I gotz MSPaint skilz!)
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03-10-2010, 06:29 PM #2
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03-13-2010, 07:38 PM #3
That's what the directions said with my BMR adj TA.
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04-04-2010, 03:30 PM #4
If your shaft is running 2.5 at the pinion, then you want the pinion at/between +.5 to +1.
Then when you are under load it will probably take out another 1. (tq arm equipped) and be close to 0 which is the non hp robbing angle you want.
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04-04-2010, 04:26 PM #5
That is how I understand it also Jeff. As mentioned above, under load, theoretically you want the angle to be 0 degrees. Most common is set at about -2 from what I've read.
Here is some more info about it. http://www.carcraft.com/howto/91758/index.html
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04-04-2010, 04:30 PM #6
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04-05-2010, 07:00 AM #7
You did it right.
2 degrees is the safe standard.
When tq arms are added or link style or ladder style depending on bushing deflection you could take some more out.
Some 4 links and similar suspensions can dial in less maybe 1. or .05 with solid links
I don't have much experience with the tq arm gm's to say you could take some more angle away.
But that is right just like you have it.
I deal with this everyday if it makes you feel better.
.
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04-05-2010, 08:45 AM #8
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