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Author Topic: Proper Axle Gear Selection  (Read 676 times)

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Offline Impact

  • Budget Lift
  • Posts: 191
Proper Axle Gear Selection
« on: August 26, 2009, 02:13:12 PM »
Hi guys,

I just picked up '97 TJ with a 4cyl and a std tranie. I'm swapping HP44/9 axle combo into and I'm lost as to what gear ratio to run in it. I will be running 37's and play most of the time in the mud....
Anybody dare to run 4cyl+37's+mud?
Any suggestions would greatly be appreciated!

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12 Crush JKU Sport
05 Orange TJ Sport-2" BB, 1.25" BL... (1 tons, 39's... Who the fawk really knows!)
92 Red Cherokee Sport-4.5" Rustys Lift, 33's KM2's, Eagle Rims(405k's n still tikkin...) Sold :(

Offline JackstandJohnny

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Re: Proper Axle Gear Selection
« Reply #1 on: August 26, 2009, 02:18:25 PM »
5.38s
go as deep as possible
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~ rescue green JKUR on 35s.  typical rubicon build

Offline BlackYJ

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Re: Proper Axle Gear Selection
« Reply #2 on: August 26, 2009, 02:38:42 PM »
I loved my YJ when it had the 4 "Angry" squirrels running it; lots of torque.  The 4 banger is a great little engine offroad and i would agree with JOhnny and go as low as you can for gears
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'95 YJ with a few mods

Offline Impact

  • Budget Lift
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Re: Proper Axle Gear Selection
« Reply #3 on: August 26, 2009, 07:10:04 PM »
Quote from: JOhnnyC on August 26, 2009, 02:18:25 PM
5.38s
go as deep as possible

I understand doing with as low gear as possible for rock crawling... but won't low gearing hurt me in the mud?
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12 Crush JKU Sport
05 Orange TJ Sport-2" BB, 1.25" BL... (1 tons, 39's... Who the fawk really knows!)
92 Red Cherokee Sport-4.5" Rustys Lift, 33's KM2's, Eagle Rims(405k's n still tikkin...) Sold :(

Offline JackstandJohnny

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Re: Proper Axle Gear Selection
« Reply #4 on: August 26, 2009, 09:19:04 PM »
Quote from: Impact on August 26, 2009, 07:10:04 PM
I understand doing with as low gear as possible for rock crawling... but won't low gearing hurt me in the mud?



very simple........... would you rather bog down in first gear and stall in a hole, or have enought power to actually spin the tires (even if it ain't spinning fast enough)

maybe you should go ask those toyota boys ;)

i have 4.56s and i have problems clearing the 36s locked front and rear.........
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~ rescue green JKUR on 35s.  typical rubicon build

Offline mike s

  • UberWheeler
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Re: Proper Axle Gear Selection
« Reply #5 on: August 27, 2009, 12:10:24 AM »
BIG tires for 4cyl. Low gears are critical. Go as low as possible or you'll never even spin em at all. FYI 4cyl aren't great mud machines, but any idiot can stomp the throttle on a HO engine and cause chaos, the 4 banger will make you a better wheeler cause you'll have to plan out your runs. Mud will cost huge $$$ to play in, get technical and enjoy the lightweight mountain goat you have. Or get a big block and matched drivetrain to handle it.
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'94 YJ, 2.5" RE, 1"BL on 35"s, 8.8 w 4.88
oldEnuff2NObetter

but still can't help myself

Offline BUKI

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Re: Proper Axle Gear Selection
« Reply #6 on: August 27, 2009, 08:48:38 PM »
very well put  ;D
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