2013 Manual Gear ? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > JK Wrangler Technical Forum > 2013 Manual Gear ?

Brand New! Quadratec LED Headlights!FS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectFS: 2007-2013 Jeep Wrangler "HALO" Angel Eye Kit

Reply
Unread 09-30-2013, 05:15 PM   #1
JohnBarleycorn
Registered User
2013 JK Wrangler 
 
Join Date: Feb 2009
Location: Seattle. Wa
Posts: 166
2013 Manual Gear ?

I have a stock '13 jk 2dr with 33" km2's manual tranny and 3.21's (i think). I am looking at installing a TT LSD and figured I might as well do gears while I am at it. I will at some point go with 35's so I would like to future proof myself. What would driving 33's on 4.88's be like? My tires have less than 4k miles on them so the bigger rubber wont be happening for a while. Also what advantages are there in adding the TT to the front in addition to the rear? For background the rig is my daily driver but I go up some steep passes to get to the mountains several times a month. Also in the late spring early fall I have to drive snow covered logging roads. In the winter I also plan on towing a couple of snowmobiles.

Thanks in advance for your help.

__________________
All things are possible in a Jeep
JohnBarleycorn is offline   Reply With Quote
Unread 09-30-2013, 06:17 PM   #2
spyder6
Got that Toyota chit
 
spyder6's Avatar
2010  
 
Join Date: Feb 2006
Location: Louisville, KY
Posts: 12,044
Your mileage will suffer and 1st gear will be completely useless, but it'll do for a bit
__________________
2010 Magnetic Toyota 4Runner Trail Teams

My builds: Bruiser and The Grey

|Forge Overland| or follow us on Facebook
spyder6 is offline   Reply With Quote
Unread 10-01-2013, 12:50 PM   #3
RockyClymer
RedRock4Wheeler
 
RockyClymer's Avatar
2008 JK Wrangler 
 
Join Date: Apr 2008
Location: Colorado
Posts: 4,417
Yup, I am running 4.88 with 35s and often start in 2nd gear...
__________________
08 JK 23S - Colorado Jeep Club No. 204
Too much to list - see my profile for details on build
NRA Life member
"It takes a special kind of stupid to believe criminals will follow gun laws."
I do not consider myself a smartass. I point out the obvious, search for the truth, and speak fluent sarcasm. I am, by experience, an accomplished curmudgeon.
RockyClymer is offline   Reply With Quote
Unread 10-01-2013, 01:17 PM   #4
SLADE
Registered User
2004 TJ Wrangler 
 
Join Date: Jul 2010
Location: 26537
Posts: 1,745
It's really going to depend on your daily commute and how fast you normally drive. The 4.88 gears won't effect your fuel mileage much if any until you get above 50MPH - 55MPH. If you drive highway daily and must maintain 65MPH or 70MPH+ for long periods, then you'll see a larger impact to your fuel economy.
__________________
2014 Wrangler JKU
2013 Wrangler JK
2004 Wrangler TJ on LEAFS
2001 Dodge Ram 2500
SLADE is offline   Reply With Quote
Unread 10-01-2013, 03:15 PM   #5
ROCKR8R
Registered User
2008 JK Wrangler 
 
Join Date: Sep 2013
Location: Phoenix, AZ
Posts: 339
Consider 4.56 too. Many consider the 4.10/3.6L/manual to be great for 35's. 4.56 will have you set up for 35/37" tires in the future. 4.88 will for sure spin them 33's.

-Dan
ROCKR8R is offline   Reply With Quote
Unread 10-01-2013, 05:34 PM   #6
JohnBarleycorn
Registered User
2013 JK Wrangler 
 
Join Date: Feb 2009
Location: Seattle. Wa
Posts: 166
I would say 80% of my daily driving is on side streets getting to work, 45 mph tops. But 75% of my miles are actually on highway either driving into the city or across the state over our mountain passes. I think I would prefer optimal drivability for going over the mountains, currently I have to downshift to 4th and even 3rd to maintain speed. A good mix of performance and economy would be desirable.
__________________
All things are possible in a Jeep
JohnBarleycorn is offline   Reply With Quote
Unread 10-01-2013, 06:20 PM   #7
SLADE
Registered User
2004 TJ Wrangler 
 
Join Date: Jul 2010
Location: 26537
Posts: 1,745
You'll be happy with 4.88's and 35's. The 3.6 has plenty of RPM's to work with so you'll be fine with the 33's and 4.88's for a little while, but you will definitely be out of the green /"ECO" RPM range when you running on the highway.

I'm running 4.88's and 35's on my 13 6 speed JK and am very happy with them for my driving. If I where to put more highway miles on it, I would lean toward 4.56's.
__________________
2014 Wrangler JKU
2013 Wrangler JK
2004 Wrangler TJ on LEAFS
2001 Dodge Ram 2500
SLADE is offline   Reply With Quote
Unread 10-01-2013, 09:02 PM   #8
river2c
Registered User
2014 JK Wrangler 
 
Join Date: Dec 2009
Location: Carlsbad, CA
Posts: 142
I have a 2 door Rubicon 6 speed with the stock 4.10s on 35" tires. It does OK climbing mountain grades but 4.56s would be perfect IMO.
__________________
2012 JK Rubicon 2dr 6sp Black Forest Green
river2c is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.