More power out of lifted 2012 - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 07-05-2012, 11:43 PM   #1
Jeeper
 
Americanalex's Avatar
 
Join Date: Apr 2012
Posts: 25
More power out of lifted 2012

I put a 2" lift and 35 BFG on my Wrangler and I love it! Only thing is, that Iost a bunch of power and my 6th gear doesn't work how it use to. Should I put the stock tires back on and try to sell the 35s or is there something else I can do? Please help! Thank you!

Americanalex is offline   Quote Quick Reply
Old 07-05-2012, 11:54 PM   #2
Jeeper
 
Metonymy's Avatar
 
Join Date: May 2012
Posts: 507
Re-gearing is an option (higher numerical gearing), but can be expensive.

Wait until September for RIPP to come out with their superchargers.

Don't use sixth gear unless you're on flat pavement and cruising at highway speeds.

Going back to stock? No way!

Metonymy is offline   Quote Quick Reply
Old 07-06-2012, 12:24 AM   #3
Jeeper
 
Braveheart12JK's Avatar
 
Join Date: Mar 2012
Location: Boston, MA
Posts: 970
Best option=hemi upgrade

Second best option=RIPP Supercharger soon to be available.

Third best option and reasonably priced compared to first two=Re-gear! 4:10's with 33's....I'd go 4.56's with 35's. Should still be a decent hwy ride too with 3.6 and 6 speed.
__________________
2012 2DR Wrangler Sport, Silver/w dual top. 2.5" Teraflex coil and shock lift with 33" Goodyear Duratracs. Cat back stainless exhaust with resonator removed and Rugged Ridge split dual TP system/K&N Filter and back seat removed. 4.10 gears with Auburn HP LSD. Rampage stainless steel mesh grill insert. Third Wrangler I've owned and fifth Jeep total.
Life is Good!
Braveheart12JK is offline   Quote Quick Reply
Old 07-06-2012, 12:40 AM   #4
Jeeper
 
JKralph's Avatar
 
Join Date: Nov 2011
Location: KCK
Posts: 10,248
You can regear, but it can be expensive ($1000-$2000 parts and labor i believe, please correct me if I'm wrong). A regear will essentially give you a higher rpm for a given speed, but you can simulate the same effect by simply staying in each progressive gear longer than you did than when it was stock, and forget about 6th gear. Do you know what your current gears are? 3.21 or 3.73?
JKralph is offline   Quote Quick Reply
Old 07-06-2012, 12:44 AM   #5
Member
 
Join Date: Jul 2011
Location: Someplace in Africa
Posts: 3,288
Regearing costs vary in different states. In CA we pay

$999

In some areas on the east coast the price is $2,000
pluke the 2 is offline   Quote Quick Reply
Old 07-06-2012, 12:51 AM   #6
Jeeper
 
JKralph's Avatar
 
Join Date: Nov 2011
Location: KCK
Posts: 10,248
Quote:
Originally Posted by pluke the 2 View Post
Regearing costs vary in different states. In CA we pay

$999

In some areas on the east coast the price is $2,000
fixed my post. thank you!
JKralph is offline   Quote Quick Reply
Old 07-06-2012, 01:04 AM   #7
Member
 
Join Date: Jul 2011
Location: Someplace in Africa
Posts: 3,288
Pushing 37s with Rubicon Unlimited Automatic Transmission stock 4.10 gearing No Issues or complaints here.

pluke the 2 is offline   Quote Quick Reply
Old 07-06-2012, 01:31 AM   #8
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 31,423
Quote:
Originally Posted by pluke the 2
Regearing costs vary in different states. In CA we pay

$999

In some areas on the east coast the price is $2,000
^
__________________
2007 Rubicon/Rock Krawler 2.5 coils/Rancho 7000 shocks/Teraflex monster TB/Synergy highsteer,tie rod, ball joints/Hankook MT 315-75-16 on Level 8 ZX's/MC front SB links/Rancho geo brackets & shocks/Fox ATS stabilizer/Adams front DS=Frankinlift from hell.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is online now   Quote Quick Reply
Old 07-06-2012, 01:41 AM   #9
Supporting Member

WF Supporting Member
 
wmwhitey's Avatar
 
Join Date: Mar 2012
Location: Ewa Beach Hawaii
Posts: 1,344
Man you have a 2012 you have more power than most of us your fine stop speeding its a jeep but if its that big of a deal to you you have to regear like the rest said. But first you should buy a pro cal to get it running better for now I seen a big change after I got my pro cal.
wmwhitey is offline   Quote Quick Reply
Old 07-06-2012, 02:16 AM   #10
Jeeper
 
Rb1boxer_3's Avatar
 
Join Date: Oct 2011
Location: corpus christi
Posts: 435
I have a 2012 rubi with 37s and 7:73 gears and it's fine I feel no loss with it after I used my procal. And it does fine on the freeway. The only thing that sucks is the mpg but it's a jeep oh well.
Rb1boxer_3 is offline   Quote Quick Reply
Old 07-06-2012, 02:33 AM   #11
This Member Needs Support

WF Supporting Member
 
Darkfire's Avatar
 
Join Date: Nov 2010
Location: Abq
Posts: 1,850
Images: 2
Quote:
Originally Posted by Rb1boxer_3
I have a 2012 rubi with 37s and 7:73 gears and it's fine I feel no loss with it after I used my procal. And it does fine on the freeway. The only thing that sucks is the mpg but it's a jeep oh well.
Wow I bet you MPG sucks with 7:73 gears, what's top freeway speed 22 MPH? ;-)
__________________
NewMexicoJeepGroup
"By Jeeper's for Jeeper's."

Build # 1 Matchbox Edition JKU Dozer Build

Build #2 11 Day JKU Magazine Build
Darkfire is offline   Quote Quick Reply
Old 07-06-2012, 02:41 AM   #12
Jeeper
 
JKralph's Avatar
 
Join Date: Nov 2011
Location: KCK
Posts: 10,248
Quote:
Originally Posted by Darkfire View Post
Wow I bet you MPG sucks with 7:73 gears, what's top freeway speed 22 MPH? ;-)
lol you rapscallion, you.
JKralph is offline   Quote Quick Reply
Old 07-06-2012, 02:56 AM   #13
Newb
 
Join Date: Jul 2012
Posts: 6
And it does fine on the freeway. The only thing that sucks is the mpg but it's a jeep oh well.
fiteallison is offline   Quote Quick Reply
Old 07-06-2012, 02:59 AM   #14
Jeeper
 
gonzo1308's Avatar
 
Join Date: May 2012
Posts: 989
Ha Think he meant 3.73. oh man I hope he means 3.73.
gonzo1308 is offline   Quote Quick Reply
Old 07-06-2012, 03:16 AM   #15
This Member Needs Support

WF Supporting Member
 
Darkfire's Avatar
 
Join Date: Nov 2010
Location: Abq
Posts: 1,850
Images: 2
Quote:
Originally Posted by gonzo1308
Ha Think he meant 3.73. oh man I hope he means 3.73.
If not he has DANA 90 axles
__________________
NewMexicoJeepGroup
"By Jeeper's for Jeeper's."

Build # 1 Matchbox Edition JKU Dozer Build

Build #2 11 Day JKU Magazine Build
Darkfire is offline   Quote Quick Reply
Old 07-06-2012, 03:21 AM   #16
Jeeper
 
gonzo1308's Avatar
 
Join Date: May 2012
Posts: 989
I can see that...... he may want to go up to 54's some day. you never know. haha. I think my 15K loader/earth mover has better gearing then that. top speed 24! down hill! with a full load! and me screaming the whole way! AAAHHHHHHHHHH!!!!
gonzo1308 is offline   Quote Quick Reply
Old 07-06-2012, 03:44 AM   #17
Jeeper
 
Rb1boxer_3's Avatar
 
Join Date: Oct 2011
Location: corpus christi
Posts: 435
Quote:
Originally Posted by Darkfire

Wow I bet you MPG sucks with 7:73 gears, what's top freeway speed 22 MPH? ;-)
Quote:
Originally Posted by JKralph

lol you rapscallion, you.
Quote:
Originally Posted by gonzo1308
Ha Think he meant 3.73. oh man I hope he means 3.73.
Lol whoops yea I mean 3.73. And my city Is like 10-11 and highway 14-15 at a good 70 mph
Rb1boxer_3 is offline   Quote Quick Reply
Old 07-06-2012, 06:57 AM   #18
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 21,443
Quote:
Originally Posted by wmwhitey View Post
Man you have a 2012 you have more power than most of us your fine stop speeding its a jeep but if its that big of a deal to you you have to regear like the rest said. But first you should buy a pro cal to get it running better for now I seen a big change after I got my pro cal.

A common misconception. It still comes down to gearing. All that top end HP is meaningless if you can't get moving. A 3.6 with 3.21 gears and a slushbox, isn't much better than the 3.8.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 07-06-2012, 09:09 AM   #19
Jeeper
 
Americanalex's Avatar
 
Join Date: Apr 2012
Posts: 25
Quote:
Originally Posted by JKralph
You can regear, but it can be expensive ($1000-$2000 parts and labor i believe, please correct me if I'm wrong). A regear will essentially give you a higher rpm for a given speed, but you can simulate the same effect by simply staying in each progressive gear longer than you did than when it was stock, and forget about 6th gear. Do you know what your current gears are? 3.21 or 3.73?
I believe 3.21
Americanalex is offline   Quote Quick Reply
Old 07-06-2012, 09:15 AM   #20
Commercial Member JeepsOnTrails

WF Supporting Member
 
lee indy's Avatar
 
Join Date: May 2009
Location: Middle Georgia
Posts: 4,917
find someone regearing to higher and steal there 3.73s
lee indy is online now   Quote Quick Reply
Old 07-06-2012, 09:19 AM   #21
Jeeper
 
nwapache's Avatar
 
Join Date: Sep 2011
Posts: 262
4:10 or 4:56 would be good gear choices for you. You'll recover some oomph but not all of it. Larger rotational mass has an impact any way you chop it up.
__________________
Just about everything you can bolt on, courtesy of Northridge4x4
nwapache is offline   Quote Quick Reply
Old 07-06-2012, 10:04 AM   #22
Jeeper
 
ferninAZ's Avatar
 
Join Date: Feb 2012
Location: Sierra Vista, Arizona
Posts: 770
Take the back seat out, and leave your spare tire at home. Lose the extra weight, get rid of the tailgate, carpet, hardtop. Anything that you can take off and dont need, throw it in the garage. Then slow down and enjoy the ride, its a Wrangler, not a sports car. Regearing is a good idea, and if you have unlimited funds, Hemi conversion.
ferninAZ is online now   Quote Quick Reply
Old 07-06-2012, 11:27 AM   #23
Jeeper
 
gonzo1308's Avatar
 
Join Date: May 2012
Posts: 989
Regearing does not take unlimited funds. I learned to do it during a weekend and a lot of beer.
gonzo1308 is offline   Quote Quick Reply
Old 07-06-2012, 11:36 AM   #24
Jeeper
 
ferninAZ's Avatar
 
Join Date: Feb 2012
Location: Sierra Vista, Arizona
Posts: 770
Quote:
Originally Posted by gonzo1308 View Post
Regearing does not take unlimited funds. I learned to do it during a weekend and a lot of beer.
I meant unlimited funds for the Hemi conversion. Sorry about the poor grammar.
ferninAZ is online now   Quote Quick Reply
Old 07-06-2012, 11:41 AM   #25
Jeeper
 
N3M0's Avatar
 
Join Date: Jul 2011
Location: North Central MA
Posts: 1,214
Quote:
Originally Posted by pluke the 2 View Post
Regearing costs vary in different states. In CA we pay

$999

In some areas on the east coast the price is $2,000

so spend the $1000 in gas to drive out to Cali and crash at your place, get the gear swap done, wheel with you the next day, then drive home? is that what your saying Pluke?

correction, forgot to mention that you would save $1 this way
N3M0 is offline   Quote Quick Reply
Old 07-06-2012, 11:54 AM   #26
Jeeper
 
gonzo1308's Avatar
 
Join Date: May 2012
Posts: 989
Oh ok. I let it slide this time. Ha! and i got a couch you can surf.
gonzo1308 is offline   Quote Quick Reply
Old 07-06-2012, 12:28 PM   #27
Jeeper
 
DJL2's Avatar
 
Join Date: Apr 2012
Location: The center of the universe, NC
Posts: 772
Rotational mass and stuff is important...it's also worth remembering that your tire diameter is a factor in your vehicles effective gearing as they basically function as your final gear. Making your tires larger lowers your gearing. If you had a true 32" diameter tire and 4.10 gears and went to a true 35" tire...your effective gear ratio is now that of a true 32" tire and 3.73 gears (you would need a 4.48 (so, call it a 4.56) to restore your original effective gearing). Add in your losses due to rotational inertia and you can see why re-gearing can quickly become attractve as tires get larger.

Allow me to plug I-6 and diesel engines here too =) They do a nice job of generating low end grunt, so you don't feel quite as under gunned when your making greater power demands low in the rev range. That horse might be dead, but I don't think it's pulpy yet.
DJL2 is offline   Quote Quick Reply
Old 07-06-2012, 04:39 PM   #28
Supporting Member

WF Supporting Member
 
JeepHerz's Avatar
 
Join Date: Apr 2012
Location: California
Posts: 2,347
Images: 20
Imagine my dread after ordering my lift kit and tires...and stumbling onto this forum....that I (DOH!) made the fatal 3.21 error at the dealership. I figured the 80 extra HP in the 2012 was plenty for me (Its a Jeep!) and I wasn't planning on towing anything. Oops.
I returned my (not installed) 35" Toyos (BAD A**) and swapped them for 305/70/17 KM2s instead. Lighter, narrower blah blah blah. I am a lead foot and I've barely noticed a loss- but I am in an auto. Its only been 2 weeks since install but I don't think I need a re-gear. Logically you'd think a manual tranny would allow you to compensate better???....The 1" tire difference surely can't be it. However pre-install I tracked down every 3.21'er I could find and the consensus was 6th is gone with your equipment.
Get a Procal- its not a gear change but its the cheapest thing to do. You also don't really know what "speed" you are really doing. Worked like a charm and even a newbie girl can use it. Also re-adjusts your tire pressure.
Search for the "gear chart" on the forum- you'll find the exact gear ratios per tire size. Unfortunately 3.21s are really only geared for the stock skinnies. Anything else you lose 10-15% exponentially with each tire size up. One 3.21'er even did 33s and he still had an issue- but that's an option. (Manual). Don't go stock!
And for those of you that say "It's a Jeep- slow down"- you're missing the point. The point is to try and keep the Jeep running the same as it was when I test drove it and bought it. American Alex bought it/drove it with a 6th gear; he'd like to still have a 6th gear.
JeepHerz is offline   Quote Quick Reply
Old 07-06-2012, 04:58 PM   #29
Jeeper
 
JKralph's Avatar
 
Join Date: Nov 2011
Location: KCK
Posts: 10,248
Quote:
Originally Posted by JeepHerz
...American Alex bought it/drove it with a 6th gear; he'd like to still have a 6th gear.
I hear ya, i just suggested the forget-about-6th-gear idea as the option that would cost zero dollars. I agree with you that 35's are a bit much for 3.21 gears (I have those same wimpy gears, and the biggest i'll go are 33's), just trying to throw out the available options
JKralph is offline   Quote Quick Reply
Old 07-06-2012, 05:17 PM   #30
Supporting Member

WF Supporting Member
 
JeepHerz's Avatar
 
Join Date: Apr 2012
Location: California
Posts: 2,347
Images: 20
Gotcha! Sorry, I might be a little sensitive about my 3.21s.
I thought they only suckered 2012 buyers? 3.21s were available on a 2010? I looked at 2010s and 2011s...probably would've wound up with the same thing if I bought used. LOL.

JeepHerz is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 09:57 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC