Gearing question. - 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 10-09-2008, 12:13 AM   #1
Jeeper
 
KellyK's Avatar
 
Join Date: Sep 2008
Location: spokane washington
Posts: 521
Gearing question.

Yet another thread from me. Pretty soon i just might know something about jeeps...lol

So i have a 99 Tj 4.0 5speed.
This is my first jeep so i wasnt sure if i should have low gearing.
1st is almost like a granny gear.
I went and looked at the read transfer case and could only make out these numbers stamped in it.

The dana logo and then these numbers.

43225
177

Make any sense you anyone?
What gearing am i running and what rear axel ?
I tried to find anything that looked like a tag but there was none. Just the stamp in the back.

KellyK is offline   Quote Quick Reply
Old 10-09-2008, 12:15 AM   #2
Jeeper
 
jeepincj7930's Avatar
 
Join Date: Sep 2008
Posts: 19
i have a 6 speed but my first gear is the same way i usually start in 2nd

jeepincj7930 is offline   Quote Quick Reply
Old 10-09-2008, 05:53 PM   #3
Jeeper
 
KellyK's Avatar
 
Join Date: Sep 2008
Location: spokane washington
Posts: 521
any way to tell what ratio im running from those numbers?
And what RPM should be my cruising speed?
Yeah i know... damn does this guy know anything?...lol
KellyK is offline   Quote Quick Reply
Old 10-09-2008, 06:18 PM   #4
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,170
Images: 2
Your gearing is either 3.73 or 3.07. If your rear axle's differential cover is perfectly oval-shaped with a black snap-in cover in the lubricant fill hole, it's a Dana 35c. If the cover is more stop-sign shaped and more angular, not oval-shaped, with a threaded steel bolt in the lube fill hole it's the stronger Dana 44.

What are your rpms at 70 mph and what size tires are you running?
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 10-09-2008, 07:11 PM   #5
Jeeper
 
slf41002's Avatar
 
Join Date: Feb 2008
Location: Augusta,KY
Posts: 1,163
If he has granny gear in first i would say that he has way lower than 3.07 and more than likely lower than 3.73.I would say either it has been regeared or if not a Rubi has the 4.1 mod on the t-case.If it is a Rubi it does have the 4.1 ratio t-case.I think that is correct as mine unfortunately isn't a rubi just a diamond in the rough.
__________________
I like for it to shine even thought it is muddy most of the time!
http://www.myspace.com/shermanf
slf41002 is offline   Quote Quick Reply
Old 10-09-2008, 08:28 PM   #6
Jeeper
 
KellyK's Avatar
 
Join Date: Sep 2008
Location: spokane washington
Posts: 521
Well first off.... i dont know squat about mechanics YET...lol

Here are pics of what i see.
I'm going out on a limb and guessing that the oil like substance to the left of the transfer case is not normal???
I dont know why its there... but it looks fresh. Any ideas? I did get a power train warranty with the jeep so if need be i can fix that if its a prob.



KellyK is offline   Quote Quick Reply
Old 10-09-2008, 08:34 PM   #7
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,861
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
Perhaps the oil comes from a leak at the pinion where the front driveshaft is attached at the transfer case.

Is there enough oil in the TC? Park the TJ on levelled ground and open teh fill plug (you can see it on the pic below). The TC must be filled up to this plug.

nicolas-eric is offline   Quote Quick Reply
Old 10-09-2008, 08:37 PM   #8
Jeeper
 
Join Date: Feb 2008
Posts: 29
If your Jeep came with the big wheel package 30x9.5 then your gearing should be 3.56 if those tires are 235/75/15's then your gearing should be 3.07 Jeeps in general have a very low first gear, this being your first Jeep you might not have realized how low it is. Cruising at 70 your RPM's should be in the 2000 -2300 range, thats how my Jeep was, I had the big wheel package on it and 3.56 gears with the 5 speed. Yes those oil marks are not normal and if you still have the warranty I would get it checked out. Hope this helps
Hebera is offline   Quote Quick Reply
Old 10-09-2008, 09:59 PM   #9
Jeeper
 
KellyK's Avatar
 
Join Date: Sep 2008
Location: spokane washington
Posts: 521
yeah the tires are 30/9.5
I will have it checked out. Do you think it is a major problem?... something i can put off till the weekend?
KellyK is offline   Quote Quick Reply
Old 10-09-2008, 10:14 PM   #10
Wrecktrician
 
4point's Avatar
 
Join Date: Dec 2006
Location: Central Sierra
Posts: 7,351
The gear ratio is stamped on this tag. Its just under the layer grime.
Click image for larger version

Name:	D35a.JPG
Views:	9
Size:	59.2 KB
ID:	5027
__________________
Just getting to work is an adventure.
4point is offline   Quote Quick Reply
Old 10-10-2008, 02:37 AM   #11
Jeeper
 
CVFD76's Avatar
 
Join Date: Apr 2008
Location: Concord, Va
Posts: 119
Send a message via AIM to CVFD76
but dont trust fully wat it says, iv read on here somewhere where a few people pulled their diff apart and the gears were different than what the tag said
__________________


"No man is entitled to the blessings of freedom unless he be vigilant in its preservation." -Douglas MacArthur
CVFD76 is offline   Quote Quick Reply
Old 10-11-2008, 11:24 PM   #12
Jeeper
 
KellyK's Avatar
 
Join Date: Sep 2008
Location: spokane washington
Posts: 521
Ok so i went over to my brothers and we crawled under there so he could tell me how screwed i was ....
He said im leaking what seems to look like "gear oil" from my ... i want to say "marion housing???"

He pulled his finger out of that area and showed me something red. and said that someone had been in there before because he has never seen a red seal from a factory.

Now i love my brother and all but does he know what the hell he is talkin about????

im sure i sound like a total jack ass with that one..
Should have worn my helmet when my short bus rolled over huh....

And i did find that my gearing is 3.73 on the 31"s
KellyK is offline   Quote Quick Reply
Old 10-12-2008, 01:22 AM   #13
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,170
Images: 2
Quote:
Originally Posted by Hebera View Post
If your Jeep came with the big wheel package 30x9.5 then your gearing should be 3.56 if those tires are 235/75/15's then your gearing should be 3.07 Jeeps in general have a very low first gear,
While the '97 with a 4.0L engine came with either a 3.07 or 3.55, the OP's '99 has either a 3.07 or 3.73. Jeep has never installed 3.56 gears in a TJ meant to be sold in the US.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 10-12-2008, 02:41 AM   #14
Jeeper
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 8,286
Send a message via AIM to Triple88a Send a message via MSN to Triple88a Send a message via Yahoo to Triple88a Send a message via Skype™ to Triple88a
btw dude welcome to the turd axles.
Triple88a is offline   Quote Quick Reply
Old 10-12-2008, 10:55 AM   #15
Jeeper
 
KellyK's Avatar
 
Join Date: Sep 2008
Location: spokane washington
Posts: 521
Now i dont "plan" on doing any major wheelin with this jeep but will the "turd axel club" be able to work trails,snow banks, or even the puddle that builds up at the serwer intake on the road? or whould i swerve to miss those?....lol

I just want to know what kind of stuff to look out for..
KellyK is offline   Quote Quick Reply
Old 10-12-2008, 11:26 AM   #16
Jeeper
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 8,286
Send a message via AIM to Triple88a Send a message via MSN to Triple88a Send a message via Yahoo to Triple88a Send a message via Skype™ to Triple88a
Quote:
Originally Posted by KellyK View Post
I just want to know what kind of stuff to look out for..
Dont abuse it, basically that's it. Don't launch it, if the rear starts jumping, let off the gas. etc. With stock wheels it should be fine but if you go to 33s or 35s, you have to baby it. I've had 35s on mine for the over half a year now and still no problems.

Snowbanks will be fine btw
Triple88a is offline   Quote Quick Reply
Old 10-12-2008, 11:31 AM   #17
Jeeper
 
KellyK's Avatar
 
Join Date: Sep 2008
Location: spokane washington
Posts: 521
Well my "plan" for now is to do some lighting mods,get rid of the damn tape deck and tuna can speakers, and im thinking of just a 2" spacer lift.
Its a toy but i still have to run the 3 little kids around. My brother is pushing for a 4" lift but i cant afford big rubber... i have a firarm addiction i still have to throw a bone once and awhile...lol
KellyK is offline   Quote Quick Reply
Old 10-12-2008, 11:54 AM   #18
Jeeper
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 8,286
Send a message via AIM to Triple88a Send a message via MSN to Triple88a Send a message via Yahoo to Triple88a Send a message via Skype™ to Triple88a
In that case I'd go with 3" suspension lift and another in bl and add some 33s

Look at the tire prices though the jump from 33s to 35s is not that much
Triple88a is offline   Quote Quick Reply
Old 10-12-2008, 12:20 PM   #19
Jeeper
 
Join Date: Oct 2008
Location: Lanna, Jawja
Posts: 153
but the stuff necessaryt o run 35's properly adds up quick

Never Monday 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Quick Gearing Question Timberman TJ Tech Forum 4 12-23-2008 10:05 AM
gearing question trumsey07 YJ Tech Forum 6 06-23-2008 09:57 PM
gearing question kuotown TJ General Discussion Forum 5 11-20-2007 12:52 PM
gearing question liquid TJ Tech Forum 6 07-08-2007 03:01 PM
Gearing Question 18derrick YJ Tech Forum 10 12-02-2006 08:25 PM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 08:12 PM.



Jeepģ, 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