axle gear ratio

zpratt4 · 10-15-2008, 12:30 AM

can anyone tell me what the axle gear ratio is on a 99 tj sport? i want to chang the gear so the speedometer will be right for my tires but i don't know what the gear ratio is. i have 33x12.50 tires.

**4Jeepn** · 10-15-2008, 07:39 AM

I will guess you have 3.73's. Also if you have an axle tag on the diff, it might say on there as well.

JeepCommandoja · 10-15-2008, 02:05 PM

i think you most likely have 3.07 gears. thats what i have in my 98 sahara

Giancarlo · 10-15-2008, 02:48 PM

you need to check how many bolts are on the axle hub and what shape it is.. or you can check the tag on the axel.. year and model doesnt matter because wranglers had the option from the factory to come with diff axle gear ratios

**4Jeepn** · 10-15-2008, 03:38 PM

Quote:

Originally Posted by Giancarlo

you need to check how many bolts are on the axle hub and what shape it is.. or you can check the tag on the axel.. year and model doesnt matter because wranglers had the option from the factory to come with diff axle gear ratios

Okay clue me in what are the number of bolts on the axle hub and conditon is going to tell you about the gear ratio? TJ's came with 3.07 3.55 and 3.73 w/ the 6cly and 4.10 for the 4 banger as far as I know.

AzTJ · 10-15-2008, 03:36 PM

Do you have a D44 or D35? Auto? If it's a D35, 3.07's... D44, 3.73.

Protect your Jeep while rock crawling with side rocker panel guards & skid plates from Skid Row Automotive, Body Armor, Rugged Ridge, Olympic 4X4 Products & Warn. - Quadratec

Jerry Bransford · 10-15-2008, 03:50 PM

The '99 Sport came only with 3.07 or 3.73, Jeep stopped installing 3.55 after '97. Look at the steel tag held between two differential cover bolts at its 9 o'clock position, you'll find the ratio embossed into that tag. Because there is a .01 ratio difference between the front and rear axles with some ratios, it could for example say "3 74" or "3 73" (there is no decimal point when looking at the embossed ratio).

**distortedtj** · 10-15-2008, 06:01 PM

zpratt4 · 10-15-2008, 06:07 PM

well, i just went out and looked at mine. i have the 3.07. everywhere i have looked online i can't find anything that works with the 3.07 and 33" tires. any suggestions, or does nobody make a gear for that? it seems like it would be pretty common.

**distortedtj** · 10-15-2008, 06:13 PM

zpratt4 · 10-15-2008, 06:16 PM

Quote:

Originally Posted by distortedtj

that chart says i need the 26 tooth one, however there is not a 26 tooth one that fits mine. they make a 26 tooth one that works for the yj, but the shaft is to long to work for mine.

AzTJ · 10-15-2008, 06:30 PM

MOPAR 52067631 - 31 Tooth Speedometer Gear for 93-06 Jeep® Wrangler YJ & TJ - Quadratec

zpratt4 · 10-15-2008, 06:38 PM

Quote:

Originally Posted by AzTJ

MOPAR 52067631 - 31 Tooth Speedometer Gear for 93-06 Jeep® Wrangler YJ & TJ - Quadratec

i just said i have to have a 26 tooth gear and the link you posted is for a 31 tooth gear. that doesn't really help me.

AzTJ · 10-15-2008, 08:16 PM

Quote:

Originally Posted by zpratt4

i just said i have to have a 26 tooth gear and the link you posted is for a 31 tooth gear. that doesn't really help me.

Hmm... so it is. Quadratec has a bad link on their chart page. Oh well.

zpratt4 · 10-16-2008, 12:27 AM

Quote:

Originally Posted by AzTJ

Hmm... so it is. Quadratec has a bad link on their chart page. Oh well.

oh well, thanks for trying.

Jma20a · 10-15-2008, 06:36 PM

how do i tell the ratio if the tag is missing? i have a '99 5 speed 4banger, i looked were the picture shows but there is nothing there.

Jerry Bransford · 10-15-2008, 06:39 PM

Quote:

Originally Posted by Jma20a

how do i tell the ratio if the tag is missing? i have a '99 5 speed 4banger, i looked were the picture shows but there is nothing there.

You have a 4.10 axle ratio.

Giancarlo · 10-15-2008, 07:03 PM

yehh.. the pumpkin will have a different number of bolts...

http://memimage.cardomain.net/member...7_182_full.jpg

Triple88a · 10-16-2008, 02:12 AM

You can try swapping the shafts but i personally had bad experience with it. I think you'll have to warm the gear up a bit to loosen it since its very brittle. Anyhow i remember i hit it and it cracked..

Another person on the jeep forum says he has done it successfully so..

You can also try your dealership.. ask for part 52067626
Also do your self a favor and buy an O ring.

10-15-2008, 12:30 AM	#1
zpratt4 Jeeper Join Date: Sep 2007 Location: Knoxville, TN Posts: 134	axle gear ratio can anyone tell me what the axle gear ratio is on a 99 tj sport? i want to chang the gear so the speedometer will be right for my tires but i don't know what the gear ratio is. i have 33x12.50 tires.

10-15-2008, 07:39 AM	#2
4Jeepn IITYWTMWYBMAB ::WF Moderator:: Join Date: Apr 2005 Location: Florence, KY Posts: 3,772	I will guess you have 3.73's. Also if you have an axle tag on the diff, it might say on there as well. __________________ 79968500019700979397 97 5.2L Have you filled up your V8 today?

10-15-2008, 02:48 PM	#4
Giancarlo Jeeper Join Date: Jul 2006 Posts: 696	you need to check how many bolts are on the axle hub and what shape it is.. or you can check the tag on the axel.. year and model doesnt matter because wranglers had the option from the factory to come with diff axle gear ratios __________________ 1997 TJ, 6cyl, 4' Skyjacker, Custom Bumpers Front and Rear , Rocker Rails, Magna Flow Muffler, Light Bar , Custom Intake, Optima Yellow Top ,33x12.5x15 Procomp X-Terrain, Alpine Type S Audio, 10' polk sub, Recaro Seats. http://photos-d.ak.facebook.com/phot...69427_7043.jpg

10-15-2008, 03:36 PM	#6
AzTJ Jeeper Join Date: Dec 2006 Location: Payson, AZ Posts: 7,396	Do you have a D44 or D35? Auto? If it's a D35, 3.07's... D44, 3.73. Protect your Jeep while rock crawling with side rocker panel guards & skid plates from Skid Row Automotive, Body Armor, Rugged Ridge, Olympic 4X4 Products & Warn. - Quadratec __________________ Grand Canyon State Renegade

10-15-2008, 03:50 PM	#7
Jerry Bransford Knows a couple things... Join Date: Nov 2005 Location: Escondido, CA Posts: 4,580	The '99 Sport came only with 3.07 or 3.73, Jeep stopped installing 3.55 after '97. Look at the steel tag held between two differential cover bolts at its 9 o'clock position, you'll find the ratio embossed into that tag. Because there is a .01 ratio difference between the front and rear axles with some ratios, it could for example say "3 74" or "3 73" (there is no decimal point when looking at the embossed ratio). __________________ See the Geezer Jeep at http://members.cox.net/jerrypb/

10-15-2008, 02:05 PM	#3
JeepCommandoja Jeeper Join Date: Oct 2007 Posts: 68	i think you most likely have 3.07 gears. thats what i have in my 98 sahara

10-15-2008, 06:01 PM	#8
distortedtj Just a country boy. WF Supporting Member Join Date: Aug 2007 Location: always watching. Posts: 6,901	__________________ *Wars may come and go but my soldiers remain Eternal.* All my complaints shrink to nothing... I'm ashamed of all my somethings.

10-15-2008, 06:07 PM	#9
zpratt4 Jeeper Join Date: Sep 2007 Location: Knoxville, TN Posts: 134	well, i just went out and looked at mine. i have the 3.07. everywhere i have looked online i can't find anything that works with the 3.07 and 33" tires. any suggestions, or does nobody make a gear for that? it seems like it would be pretty common.

10-15-2008, 06:13 PM	#10
distortedtj Just a country boy. WF Supporting Member Join Date: Aug 2007 Location: always watching. Posts: 6,901	__________________ *Wars may come and go but my soldiers remain Eternal.* All my complaints shrink to nothing... I'm ashamed of all my somethings.

10-15-2008, 06:30 PM	#12
AzTJ Jeeper Join Date: Dec 2006 Location: Payson, AZ Posts: 7,396	MOPAR 52067631 - 31 Tooth Speedometer Gear for 93-06 Jeep® Wrangler YJ & TJ - Quadratec __________________ Grand Canyon State Renegade

10-15-2008, 06:36 PM	#16
Jma20a Jeeper Join Date: Apr 2007 Location: Fairfield, CT Posts: 1,125	how do i tell the ratio if the tag is missing? i have a '99 5 speed 4banger, i looked were the picture shows but there is nothing there. __________________ When you die, if you go somewhere where they ask you a bunch of questions about your life and what you learned and all, i think a good way to get out of it is to say "no speaka english." Deep Thoughts by Jack Handey

10-15-2008, 07:03 PM	#18
Giancarlo Jeeper Join Date: Jul 2006 Posts: 696	yehh.. the pumpkin will have a different number of bolts... http://memimage.cardomain.net/member...7_182_full.jpg __________________ 1997 TJ, 6cyl, 4' Skyjacker, Custom Bumpers Front and Rear , Rocker Rails, Magna Flow Muffler, Light Bar , Custom Intake, Optima Yellow Top ,33x12.5x15 Procomp X-Terrain, Alpine Type S Audio, 10' polk sub, Recaro Seats. http://photos-d.ak.facebook.com/phot...69427_7043.jpg

10-16-2008, 02:12 AM	#19
Triple88a Jeeper Join Date: Nov 2006 Location: Chicago, IL Posts: 8,287	You can try swapping the shafts but i personally had bad experience with it. I think you'll have to warm the gear up a bit to loosen it since its very brittle. Anyhow i remember i hit it and it cracked.. Another person on the jeep forum says he has done it successfully so.. You can also try your dealership.. ask for part 52067626 Also do your self a favor and buy an O ring. __________________ http://tripster.myminicity.com/sec http://www.cardomain.com/ride/2512831 Last edited by Triple88a; 10-16-2008 at 02:16 AM.

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