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Author Topic: Speedometer gear help  (Read 2895 times)

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ilandtime

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Speedometer gear help
« on: July 06, 2005, 05:01:20 PM »
I just put 4.88 gears and 31" tire on my 95YJ. I have found other web sites that say I need a 44 tooth speedometer gear. But I can't seem to find any. Dose anyone know where to get one. The dealer can't get them they say they are obsolete. I will be putting 33" tires on but that won't be for awhile. Can anyone help? Thanks
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Offline Jeffy

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Speedometer gear help
« Reply #1 on: July 06, 2005, 05:24:00 PM »
You might be able to use the stock speedometer gear.  It's a 41T.  Should be good enough.
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StefanBidi

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Speedometer gear help
« Reply #2 on: July 06, 2005, 06:22:14 PM »
Just make sure you know how many miles per hour you're doing and you'll be fine.
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ilandtime

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Speedometer gear help
« Reply #3 on: July 06, 2005, 09:47:38 PM »
My stock gear is 34 tooth. I've found 41t but was told that I need to get a 44t to make it read right. The 41t is what's called for 4.88 and 33" tires. I have 4.88 and 31" tires.
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Offline Jeffy

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Speedometer gear help
« Reply #4 on: July 06, 2005, 10:43:42 PM »
On a chart, I like to use, I get 40T.  Was your Jeep an auto?  2.5L Manual should come with a 41T.  It takes some tweaking, using charts.  I'm running a 35T for 4.56's and 35's and my speedo's off 4mph at 70mph.

http://www.jeeptech.com/javaAps/Speedo.html
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"If the motor car were invented today, there is absolutely no way that any government in the world would let normal members of the public drive one."

StefanBidi

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Speedometer gear help
« Reply #5 on: July 07, 2005, 07:09:33 AM »
Yep, my stock speedogear was also 41T.  Went to 38T for the 31" tires and stock gearing and it's exact.  I've compared it to those "Your speed is..." signs that the cops here put.
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ilandtime

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Speedometer gear help
« Reply #6 on: July 07, 2005, 08:09:23 PM »
I have a 95YJ with a 2.5 5 speed. It has 31" tires and the 4.88 gears are going in right now. Which one do you think I should start with.
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Offline Jeffy

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Speedometer gear help
« Reply #7 on: July 07, 2005, 09:05:36 PM »
I'd put the stock 41T in there and see how off it is.
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"If the motor car were invented today, there is absolutely no way that any government in the world would let normal members of the public drive one."

ilandtime

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Speedometer gear help
« Reply #8 on: July 08, 2005, 10:02:57 PM »
I'm having the 4.88 installed right now and I will be going to the Rubicon on the 15th. Hope it all works out.
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ilandtime

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Speedometer gear help
« Reply #9 on: July 09, 2005, 10:37:38 PM »
Gears are in speedo is off 11mph fast. I'll go and get a 41t gear and see how it works.
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