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Differential Gear Identification

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longarch

Differential Gear Identification
« on: November 07, 2007, 08:27:59 AM »
Guy's I don't want to sound dumb, just ignorant, about how to identify the gears in my Tracker. I have a '94 8-valve engine with a 3-speed automatic transmission. How do I identify what gears are in it, 4.62 or 5.12? I also have a parts car, which is an '89 Sidekick 8-valve engine with a 5-speed manual transmission in it. Do you think the Tracker might have 4.62's and the Sidekick 5.12's? If this is true then I should be able to put the Sidekick gears in my Tracker, lift it, and run 31's. Am I thinking correctly?
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Offline wheresmyhat

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Re: Differential Gear Identification
« Reply #1 on: November 07, 2007, 09:00:05 AM »
Your 94 auto should have the 4.62 and you 89 manual should have the 5.12
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Offline Skyhiranger

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Re: Differential Gear Identification
« Reply #2 on: November 07, 2007, 07:31:03 PM »
Quote from: wheresmyhat on November 07, 2007, 09:00:05 AM
Your 94 auto should have the 4.62 and you 89 manual should have the 5.12

I agree.

You can swap the complete thirds between the two.  The only issue you may run into......if the 94 has rear ABS and the 89 doesn't, then if you swap in the 89 third, the ABS won't work and the brake light on the dash will probably be lit all the time.

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longarch

Re: Differential Gear Identification
« Reply #3 on: November 08, 2007, 05:42:13 AM »
Thanks guys. I am pleased to hear your comments. It sounds like that purchasing the Sidekick for parts was a great move on my behalf. Thanks again.
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Offline Rhinoman

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Re: Differential Gear Identification
« Reply #4 on: November 08, 2007, 10:06:04 AM »
Quote from: wheresmyhat on November 07, 2007, 09:00:05 AM
Your 94 auto should have the 4.62 and you 89 manual should have the 5.12

Unless the 89 is a 1.3 in which case it will have, IIRC, 5.62s.
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Offline locjaw

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Re: Differential Gear Identification
« Reply #5 on: November 08, 2007, 10:27:35 AM »
you also ned to remember guys that he can change the whole carrier, but cannot change the ring and pinion gears because the 89 is gonna be a 10 bolt and the 94 is a 12 bolt. he should be able to swap the whole carrier, but like mensioned earlier the ABS (if equipped)might not work
jason
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Offline Skyhiranger

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Re: Differential Gear Identification
« Reply #6 on: November 08, 2007, 12:37:46 PM »
Quote from: Rhinoman on November 08, 2007, 10:06:04 AM
Quote from: wheresmyhat on November 07, 2007, 09:00:05 AM
Your 94 auto should have the 4.62 and you 89 manual should have the 5.12

Unless the 89 is a 1.3 in which case it will have, IIRC, 5.62s.

That is true.  But the chances of it being a 1.3 carbed model is highly unlikely.
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longarch

Re: Differential Gear Identification
« Reply #7 on: November 09, 2007, 05:36:34 AM »
You're correct. It's a fuel injected 1.6L engine. So, does that mean for sure that the gears are 5.12? I can swap the entire rear and front ends. Thanks again for the great discussion.
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Offline lil_Truck

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Re: Differential Gear Identification
« Reply #8 on: November 09, 2007, 05:46:20 AM »
To be sure, pull the doner 3rd and count the ring and pinion teeth.  Then divid the ring by the pinon and you have your reduction number.
« Last Edit: November 09, 2007, 03:58:07 PM by lil_Truck »
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longarch

Re: Differential Gear Identification
« Reply #9 on: November 09, 2007, 08:34:01 AM »
Cool.......... That helps a bunch. I should have known there was an easy way of figuring the ratio but I wasn't thinking of the ratio being between the ring and pinion gears. Whoa, I'm excited now. I've learned something new. That's why I love these forums. They're so informative.
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