1998 TJ 4 cylinder Gear Ratios? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-17-2012, 09:48 PM   #1
Jeeper
 
Join Date: Aug 2011
Posts: 49
Lightbulb 1998 TJ 4 cylinder Gear Ratios?

Hey everybody,
I'm possibly buying a 4cyl 1998 TJ, its a 5 speed manual. I'm planning to lift it 3 inches and install 32's (possibly 33's) as soon as I buy it. I'm wondering if anybody on here could tell me what the gear ratio is?

From what I understand, ALL 2.5L 4cylinder TJ's have stock 4.10s. If the 98 does have 4.10's, lifting it will be fine. If not, I may have to reconsider.

So! Could anybody tell me if all 2.5L Tj's do have stock 4.10s?

Thanks, Max

Decker is offline   Quote Quick Reply
Old 03-17-2012, 09:59 PM   #2
Supporting Member

WF Supporting Member
 
jeepwayoflife's Avatar
 
Join Date: Nov 2011
Location: California/Montana
Posts: 3,188
Look on the little metal tab on the rear or front axle covers. It should say on there

__________________
--------------------------------------------------------
jeepwayoflife is offline   Quote Quick Reply
Old 03-17-2012, 10:07 PM   #3
Jeeper
 
Join Date: Aug 2011
Posts: 49
Thanks, but I haven't bought it yet and forgot to check! In the meantime, do all of them have stock 4.10s?
Decker is offline   Quote Quick Reply
Old 03-17-2012, 10:23 PM   #4
Jeeper
 
DevilDogDoc's Avatar
 
Join Date: Jun 2010
Location: Yucca Valley CA 20 miles from JV
Posts: 2,362
Should be 4.10 unless it was changed but you probably wont like it....
__________________
Violence may not be the answer but it sure cuts down on the stupid questions
DevilDogDoc is offline   Quote Quick Reply
Old 03-17-2012, 10:32 PM   #5
IITYWTMWYBMAB

WF Supporting Member
::WF Administrator::
 
4Jeepn's Avatar
 
Join Date: Apr 2005
Location: Florence, KY
Posts: 10,268
Images: 5
Not sure what your budget is, but if you can look for a 6cly, and one with a rear dana 44 axle..has square metal fill plug in the diff. this will solve two major problems the 4cly has, power and will give you a better rear axle for the bigger tires.
__________________
79.96.85.00.01.97.00.97.93.97.95.94
CJ.XJ.CJ. TJ. TJ.ZJ. TJ.TJ. ZJ.ZJ.YJ. XJ
4Jeepn is offline   Quote Quick Reply
Old 03-17-2012, 10:44 PM   #6
Jeeper
 
Join Date: Aug 2011
Posts: 49
This one is awesome and its a great price. Otherwise i wouldn't bother. Just sold my 99 sport 4.0 automatic
Decker is offline   Quote Quick Reply
Old 03-17-2012, 10:50 PM   #7
Jeeper
 
2JeepsThatRun's Avatar
 
Join Date: Sep 2011
Location: Cincinnati, Ohio
Posts: 769
4.11s in all TJ 4 cyl and you want 4.88s for 33s and a 4 cyl/5 spd 4.58 for 4cyl/auto or 4.10s if its a 6 cyl. You need the higher rpms in a 4 cyl to keep up on the highway and still have fifth gear
__________________
2000 TJ 2.5l, 2" OME Lift, Winch, Adjustable Control Arms, Rokmen Gas Tank Skid, Warn Sliders, CCFabs 3" Hood-lines, Engine Skid, Rock Crawler Bumper Front & Rear
2JeepsThatRun is offline   Quote Quick Reply
Old 10-10-2012, 12:08 AM   #8
Newb
 
Join Date: Oct 2012
Posts: 2
does anyone know what the 6 cyl 4 l tj comes standard with? i put 33's with a 3" suspension lift on it over a year ago and haven't really noticed a difference, besides my speedometer being off. But honestly i didn't know anything about gear ratio's and it sounds like i could be flucking up my jeep. it has been driving great and i haven't noticed a difference but if theres something i should know then, well.. HELP!!
H3llman is offline   Quote Quick Reply
Old 10-10-2012, 12:19 AM   #9
Jeeper
 
JVLemur's Avatar
 
Join Date: Apr 2012
Location: California
Posts: 4,503
Quote:
Originally Posted by H3llman
does anyone know what the 6 cyl 4 l tj comes standard with? i put 33's with a 3" suspension lift on it over a year ago and haven't really noticed a difference, besides my speedometer being off. But honestly i didn't know anything about gear ratio's and it sounds like i could be flucking up my jeep. it has been driving great and i haven't noticed a difference but if theres something i should know then, well.. HELP!!
Depends on your axel, could be either 3.07, 3.73 or 4.10.
__________________
Don't follow the Hype, follow your Heart.
JVLemur is offline   Quote Quick Reply
Old 10-10-2012, 09:10 AM   #10
Jeeper
 
Wattapunk's Avatar
 
Join Date: Mar 2012
Location: North TX
Posts: 1,992
OP, yours should be 4.10's. Should be fine running 32's, 33's do-able but probably pushing it.
Wattapunk is offline   Quote Quick Reply
Old 10-10-2012, 11:34 AM   #11
Jeeper
 
Join Date: Jan 2010
Location: Houston, Tx
Posts: 695
I looked at a gear chart a while back, and 4th gear with 33's ends up about the same as 5th gear on stock tires. You basically end up with a 4 speed with a fairly high 1st gear. If it's not too hilly where you live it will be ok but not ideal.
Shoe is offline   Quote Quick Reply
Old 10-10-2012, 12:07 PM   #12
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,252
Images: 2
Quote:
Originally Posted by H3llman View Post
does anyone know what the 6 cyl 4 l tj comes standard with? i put 33's with a 3" suspension lift on it over a year ago and haven't really noticed a difference, besides my speedometer being off. But honestly i didn't know anything about gear ratio's and it sounds like i could be flucking up my jeep. it has been driving great and i haven't noticed a difference but if theres something i should know then, well.. HELP!!
If it's not a '97 or Rubicon, it came with either 3.07 or 3.73. Since you're not noticing that much difference with the 33" tires, I'd have to suggest it has 3.73 gears since it'd be a real dog with 33" tires and 3.07 gears. What year TJ and which transmission do you have?

Also as mentioned above, so long as no one removed it, your axles have a steel tag bolted onto the differential covers at their 9 o'clock position which will have your ratio embossed into it. The ratio won't show a decimal point so for example if you have 3.73, it will say "3 73". Depending on which axle you look at, it may show a ratio like 3.74 since the front and rear axle ratios of non-Rubicon Wranglers are .01 off from each other.

__________________
When you have a choice, buy American.

Jerry Bransford 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:
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
What I did to my TJ today TJeepman TJ General Discussion Forum 28924 Yesterday 11:14 PM
Wtb - stock rear window - 98 tj sport Once Far Off Classifieds Archive 16 04-03-2012 03:43 PM
Stock tires 2001 sport tj Mtgrizzlymn TJ General Discussion Forum 8 03-18-2012 02:33 PM
97 TJ tank and skid plate fit a YJ? Red1USF YJ Tech Forum 1 03-17-2012 09:24 PM
NJ: TJ 03-06 coil pack for 4.0 06GoldenEagle Classifieds Archive 0 03-17-2012 07:48 AM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 06:48 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