C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Dana 36 pinion preload setup

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Old Feb 8, 2010 | 07:38 PM
  #1  
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Default Dana 36 pinion preload setup

Guys, I'm wrestling w/the new Richmond pinion for a 3.54 set, and I've not been able to lower the pinion drag to less than 35 in-lbs.
Starting w/.030", If I take out shim thickness, it turns harder...If I add shim thickness, yep! It turns harder! (say ~50 in-lbs)
She's got me stumped.
Bearings are new, cleaned w/CRC and then lubed w/30wt.
NO seals in place.

Is there a gear Doc in the house?
Outer races are pressed in, and appear to be seated OK.
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Old Feb 8, 2010 | 10:50 PM
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J&S gear in Huntington Beach......
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Old Feb 9, 2010 | 06:28 AM
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Have you tried Richmond Gears tech support?

http://www.richmondgear.com/02form.html good luck.
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Old Feb 9, 2010 | 06:52 AM
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Thanks, I'll try Richmond and see if they have any clues. All that comes to mind would be an outer race pulling a burr and misaligning?
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Old Feb 9, 2010 | 06:59 AM
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From: van buren ar
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im going to guess that you dont have the carrier in the case and your trying to set the pinion pre-load?did you drive out the old races and find the shims behind them and put them in behind the new races?
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Old Feb 9, 2010 | 05:36 PM
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The insights do help!
What I found was that the shim value, was far greater for the Richmond, than the GM pinion. It took over .100" before any clearance was offered. Once the nominal value (.102") was reached, then it began to loosen up.
Day broke over Marble-head! Slow learner.
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Old Feb 10, 2010 | 07:01 AM
  #7  
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From: van buren ar
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thats why i always buy yukon gears from randys ring and pinion.8 out of 10 times they set up perfect with the same shims,even when i jumped from 2.59 to 3.73.
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