Stock Gears
Thread Starter
JK Enthusiast
Joined: Jul 2010
Posts: 239
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From: Atchison, Kansas
Stock Gears
Just bought a 07 X a couple weeks ago. It has 35" with a BB Lift installed. Trying to figure out if the previous owner re-geared? any suggestions?
It doesn't seem down on power but it's my first Jeep so not really sure what stock feels like. Live in a small town so haven't had a lot of time at higher speeds.
Thanks
It doesn't seem down on power but it's my first Jeep so not really sure what stock feels like. Live in a small town so haven't had a lot of time at higher speeds.
Thanks
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 165
From: Austin <--> Colorado Springs
This is from a 'what are my stock gears' thread, but...
Same with 4.88, 5.13 and 5.38. Just count the approximate rotations.
Window sticker if you still have it.
Send in the VIN and have them send you a new build sheet.
Measure your tires, (actual measured height, not mfg's spec) take a drive and see what your rpm's are at 70, then check the charts in the Drivetrain Faq's
From Ronjenx:
Chock the front tires, fore and aft.
Put the transmission in neutral.
Emergency brake off.
Jack the left rear tire off the ground.
Put a jack stand under the frame, just in case the jack fails (had to add this).
Put an index mark on the aft end of the drive shaft, visible from the left rear wheel.
Put an index mark on the left rear tire at the 6 o'clock position.
Rotate the left rear tire 2 complete revolutions while counting how many times the index mark on the drive shaft passes its original position.
That number will be your axle ratio.
Remove jackstand and lower jack.
Put transmission in gear and/or apply emergency brake.
Remove chocks.
If you have limited slip, jack up both rear wheels and rotate one revolution, making sure both tires rotate equally.
If the driveshaft rotated almost 3 1/4 turns, you have 3.21
If the driveshaft rotated almost 3 3/4 turns, you have 3.73
If the driveshaft rotated a little over 4 turns, you have 4.10
Send in the VIN and have them send you a new build sheet.
Measure your tires, (actual measured height, not mfg's spec) take a drive and see what your rpm's are at 70, then check the charts in the Drivetrain Faq's
From Ronjenx:
Chock the front tires, fore and aft.
Put the transmission in neutral.
Emergency brake off.
Jack the left rear tire off the ground.
Put a jack stand under the frame, just in case the jack fails (had to add this).
Put an index mark on the aft end of the drive shaft, visible from the left rear wheel.
Put an index mark on the left rear tire at the 6 o'clock position.
Rotate the left rear tire 2 complete revolutions while counting how many times the index mark on the drive shaft passes its original position.
That number will be your axle ratio.
Remove jackstand and lower jack.
Put transmission in gear and/or apply emergency brake.
Remove chocks.
If you have limited slip, jack up both rear wheels and rotate one revolution, making sure both tires rotate equally.
If the driveshaft rotated almost 3 1/4 turns, you have 3.21
If the driveshaft rotated almost 3 3/4 turns, you have 3.73
If the driveshaft rotated a little over 4 turns, you have 4.10
JK Freak
Joined: Jul 2007
Posts: 753
Likes: 0
From: Orange County, CA
with 35's? Is it what you would call peppy and has good power? Or would you consider it a dog? the dog is not re-geared.
Take a look at the diff cover. does it look like it has been wrenched on?
Take a look at the diff cover. does it look like it has been wrenched on?