90 yj speedometer help - JeepForum.com

 
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post #1 of 9 Old 06-20-2013, 11:26 AM Thread Starter
yjman90
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1990 YJ Wrangler 
 
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90 yj speedometer help

I have a 90 yj but the transfer case was swapped out for a newer one not sure what year it is but it has an electronic speedometer adapter on the tcase but the speedometer is mechanical one of my friends has a spare tcase with the mechanical speedometer gear in it but the gears are different sizes im not sure if i should just swap the speedo out with a newer electronic one or get a new gear for the tcase or where to even find these things any help would be greatly appreciated.

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post #2 of 9 Old 06-20-2013, 11:50 AM
Que89YJ
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Use the mechanical one and swap the gear if it fits!
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post #3 of 9 Old 06-20-2013, 11:57 AM
Randonexplosion
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The tag on the transfer case should have a build date on it. That will help you find the correct parts. Im pretty sure there is a long and short shaft speedo gear depending on the year.
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post #4 of 9 Old 06-20-2013, 12:06 PM Thread Starter
yjman90
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1990 YJ Wrangler 
 
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The one in the tcase is short shaft the one I got out of the other case has a long shaft and the gears are two different sizes . . . I've tried looking for identification numbers but haven't found anything on it
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post #5 of 9 Old 06-20-2013, 12:14 PM Thread Starter
yjman90
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It does have a sye kit in it not sure if that would change the gear or not
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post #6 of 9 Old 06-20-2013, 12:18 PM
jbolty
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if you need a new gear , each tooth count comes in a different color.

There are a couple of guys who sell the various gears on ebay; seach for jeep speedometer gear.


I think you can just swap in the entire adapter section from one tcase to another. Meaning, this whole thing.
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post #7 of 9 Old 06-20-2013, 12:25 PM Thread Starter
yjman90
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I've got that but the one that came out of the case has a red gear and is bigger with a shorter shaft than the yellow one
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post #8 of 9 Old 06-20-2013, 12:49 PM Thread Starter
yjman90
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Got it figured out I appreciate all the help didn't realize they had all the different sizes the one in the case is a 41 tooth found them online with the long shaft instead of the short shaft thanks again everyone
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post #9 of 9 Old 06-20-2013, 12:54 PM
jbolty
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before you order a new gear do the math on your gearing and tire size so your speedo will be accuate.

http://www.jeepforum.com/forum/f9/mo...-chart-153853/

http://www.quadratec.com/jeep_knowle...article-46.htm

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"The right to be heard does not necessarily include the right to be taken seriously." —Hubert Humphrey
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If you live within wheeling distance of San Diego county, click here
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