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Unread 04-04-2009, 11:45 AM   #1
virtual_mage
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2009 JK Wrangler 
 
Join Date: Sep 2008
Location: Alberta canada
Posts: 117
find axle ratio

quick question to find it.i have to turn the drive shaft by hands watching the rotation of the tire,or i can do it the other way turn the tire and watch the rotation of the shaft?

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Unread 04-04-2009, 12:22 PM   #2
bunkrdfool
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2007 JK Wrangler 
 
Join Date: May 2006
Location: Manchester, NH Errr Minot, ND
Posts: 778
Jack up the rear end. Count driveshaft revolutions while rotating the tire. Turn the tire 2 complete rotations if your other tire remains stationary and does not rotate. Turn the tire 1 complete rotation if the other tire turns in the same direction. The number of times the driveshaft rotates equals the gear ratio. If the driveshaft rotates about 3x, the gear ratio is 3.07. If it rotates 3 3/4 turns, the gear ratio is 3.73. You can mark the driveshaft to help you count.

--Stolen from Wheelin98TJs FAQ thread in the TJ section
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Unread 04-04-2009, 12:24 PM   #3
virtual_mage
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2009 JK Wrangler 
 
Join Date: Sep 2008
Location: Alberta canada
Posts: 117
thanks im 3.21 sadly time to a regear i guess lol
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Unread 04-04-2009, 12:35 PM   #4
bunkrdfool
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2007 JK Wrangler 
 
Join Date: May 2006
Location: Manchester, NH Errr Minot, ND
Posts: 778
Well unless you plan on going with bigger than 33s i wouldnt worry for now. i had a stock x with 29s with the 3.21's and i stepped up to the 32's that come with the rubicon. i can still get up to 75-80, i dont use 6th gear much, but im not to worried about that.
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