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Old 04-21-2011, 09:14 AM
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Originally Posted by 96lt4c4
I set it up last night and it clears the case but was hitting the billet cap. A flapper wheel on my grinder took care of that, no big deal at all. I didnít have to remove much material. I would rather have some off the cap than a bunch off the posi. Still getting some run out on the ring gear though. I check both ring gear mating surfaces, spinning the posi and using a dial indicator and it is dead straight. It has to be coming from this ring and pinion. I go from one thing to another. My back lash is varying about .002 around the ring gear. What is acceptable? I know going through this I have had some with no run out. This is a new Motive performance 3.89 gear. I am thinking about sending it back to Summit and trying another one.

If I was getting a .002 run out I would set the backlash at 8 at the tight spot putting you at 10 on the loose side,and check patterns.
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