Detroit TrueTrac on Jeep WJ with Quadra Drive -
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Unread 08-26-2005, 02:27 PM   #1
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Join Date: Aug 2005
Location: Maryland
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Detroit TrueTrac on Jeep WJ with Quadra Drive

Hello All... I'm a rookie at this so bear with me....

I have a 1999 Jeep WJ with DANA 30 3:73 gears up front. My Vari-Lok differential went bad (grinding, sticking) so I decided I would swap it for a Detroit TrueTrac. Purchased TrueTrac from Summit Racing (part # 912A314), dismantled the front end and placed the TrueTrac (that was the easy part). When I tried to install the stock axle the driver side was short and the passenger side won't go all the way in. I had the impression that the TrueTrac is a direct swap for the Vari-Lok and the stock axle should plug in. It wasn't the case. After a while I got frustrated so I returned the TrueTrac and purchased a Vari-Lok stock replacement. My question to all you experts is, did I need to get after market axles to make the TrueTrac work with my QuadraDrive?

Question 2: On the Vari-Lok Differential, is the plenum a vital part for the Vari-Lok to function?. It seem to me that for $130.00 for a piece of metal shielding is a bit too expensive.

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Unread 08-27-2014, 07:19 PM   #2
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bump!! i'm in the same boat!!
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Unread Yesterday, 03:20 PM   #3
2004 TJ Wrangler 
Join Date: May 2008
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I would give Randys Ring and pinion or one of the others a call. Its a shame the True Trac was not able to work as its a great unit. I had one in my old XJ and loved it. Did you try putting the axles in after you removed the TrueTrac?

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