Wrong gear ratio on new jku
04-19-2017, 08:50 AM
#11
JK Jedi
Who knew at the time.....I didn't intended to head down the path I did.
04-19-2017, 09:25 AM
#12
JK Enthusiast
You can request a build sheet directly from Jeep on their website by supplying your VIN number. It will tell you there what gears your Jeep left the factory with.
04-19-2017, 11:21 AM
#13
JK Super Freak
Hey, thanks for the replies. I don't really expect to be able to do anything about it at this point, but I would like to find out what happened. 4wp is giving me back the original gears and carriers, so I'll have those if I need to prove something at some point. It just sucks because I never would've bought it with 3:21's. I don't know if the factory just botched the sticker or what, but I know I paid for the 3:73 upgrade. I didn't drive it much until after I started the upgrades because it was my wife's DD, but it's always felt underpowered. As far as the new gears, it's my DD now, so I can't really go down to 5:13's. I wanted 4:88's, but I was worried they would be too low as well for highway use. 4:56 seemed like a good compromise. I don't really do much off-roading, usually at the beach once a year and maybe some snow in the winter. The right of way to my property gets pretty rough sometimes too. I might do more now, though. Anyway, I'll be picking it up today, and I can't wait to see the difference!
04-19-2017, 05:27 PM
#15
JK Newbie
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Interesting...the plot thickens. I put in a request for a build sheet from jeep.com, so that should be interesting. 4wp finished the install today, but they didn't have time to do the break-in procedure, so I guess ill be picking up tomorrow.
04-19-2017, 05:46 PM
#16
JK Jedi
04-19-2017, 05:47 PM
#17
JK Jedi
yup they increased over time but the early ones were much cheaper. My 16 rubicon was 695 to get 4.10's my 14 was 495 crazy.
04-19-2017, 06:40 PM
#18
JK Jedi Master
I was around back then, and 3.21 with the auto was not a possible combination one could order. It was based on the 42RLE being very poorly geared for 3.21 axles.
Have your friends actually checked to make sure they have 3.21 axles? It would seem their JKs would be almost un-driveable.
Last edited by ronjenx; 04-19-2017 at 06:43 PM.
04-20-2017, 03:00 AM
#19
JK Jedi
I do not know however if they have actually checked or if that is what they were told or just believe but that is what they both told me. both were bought used and one came from Canada.
04-20-2017, 08:09 AM
#20
JK Super Freak
Join Date: Apr 2008
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Never heard of any 3.8 auto up here with 3.21 only the 6spd.
I think folks only believe they have 3.21 because the 2012 and up have them with the auto.
3.21 on an auto would never get into OD unless you are doing 80mph on the flats and then it would take you a day to get there.
I think folks only believe they have 3.21 because the 2012 and up have them with the auto.
3.21 on an auto would never get into OD unless you are doing 80mph on the flats and then it would take you a day to get there.