what pinion agle for my 9 inch will take away my vibration??
10-24-2005, 06:39 AM
#21
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Just curious, has any one put a dial indicator on the driveshaft(car off the ground in nuetral) and rotated the assembly to see if there is any runout?
Is it posiable for the rearend yoke to be off center? Or when a conversion u-joint was installed was it checked for center alignment?
Is it posiable for the rearend yoke to be off center? Or when a conversion u-joint was installed was it checked for center alignment?
10-25-2005, 11:29 AM
#22
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Just lending support, I have no advice to fix the problem but I also have a vibration. I on the other hand am not as far into modding as you guys...yet. It sucks and pisses me off too. Im going to the track on sunday, then Im putting her up for winter and hopefully get this damn thing worked out.
10-25-2005, 06:59 PM
#23
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I'm going through the same crap right now, I've changed everything and my last resort is to tear apart the tranny and replace the output shaft. I just don't have any time to do it, I hope I can have it done before the SAR LS1TECH race event on 11-12-05
10-27-2005, 08:47 PM
#24
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ok better yet what is a good pinion angle for street racing -2 meaning towards the trunk negative or towards the engine i did it -2 twards the trunk from looking at it on the passenger side
10-29-2005, 04:32 PM
#26
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wait so im suposed to set it postive meaning towads the enging looking from the passanger side?? if the pinion is on the yoke looking at it?
10-30-2005, 07:02 PM
#28
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soory im not to sure how to do it my buddy did it for me ..the angle tool was put on the yoke ether right next to or on the 9 inch rear end and looking from under the car from the passenger side i saw the little arrow more towards the engine past the 90 degree and i told him to move it twards the trunk till the arrow went past the 90 degree anngle and got to -2,,,does this make more sence ..im not sure if im wording it right but this is what i saw
10-31-2005, 05:06 PM
#29
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ok scatch all of what i just said!! sorry was sorta confussed ok some one was saying if you messure from the yoke and have it set at 90 dergress your total pinion will be at -1 1/2 is this true?? ill try it .....also bad pinion angle caauses will hop correct .some reason my tires are not getting full traction!! sorta look liike this
----------<<<<<<this is what my traction looks like at 18 psi on mt et streets
----------
---------- <<<right rim see how there is no meet from the tire getting to the ground?
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----------<<<<<<this is what my traction looks like at 18 psi on mt et streets
----------
---------- <<<right rim see how there is no meet from the tire getting to the ground?
----------
10-31-2005, 05:16 PM
#30
TRUE pinion angle is what your suppose to be setting, not just reading off the rear pinion housing...take a reading off the driveshaft, then take a reading off the rearend housing at the pinion, the difference between the two will be your true pinion angle, adjust accordingly to maintain 1.5-2.0 negative pinion angle
