WJ Quadra-Drive & RC 4" X-Series lift - Page 2 - JeepForum.com

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post #16 of 26 Old 06-22-2010, 04:46 PM Thread Starter
sno
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What would cause it to vibrate? What drive shafts are you supposed to swap with?

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post #17 of 26 Old 06-22-2010, 07:18 PM
RedJeep2002
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what causes it to vibrate is the angle the drive shaft when you lift your jeep and as for drive shafts im not sure you should be able to buy an SYE for the rear drive shaft but I dont know what drive shaft you would have to get for the front one. but I could be wrong about needing an SYE for the rear drive shaft since I dont own a wj yet.
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post #18 of 26 Old 06-22-2010, 07:27 PM
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Vibes come from excess pinion angle. Which is why, as I mentioned before, you may need adjustable front uppers CA's. The drive shaft you have has nothing to do with why it vibrates. However, cv-style shafts cannot handle the angles from lifts more than 3" and they will wear much faster and will likely fail almost immediately. A u-joint style shaft will solve the failing issue above 3", but will not solve the vibes until you get adjustable upper CA's.

But again, some people get vibes, some dont. So, you may not even need the upper CA's. I have the RCX kit. My Jeep also came with a u-joint style shaft in the front. I have no vibes what so ever and dont have adj uppers. I only run exactly what came with the kit and it works flawlessly.

Also, no Slip Yoke Eliminator needed on WJs until you get above 6" of lift.

~James

2002 Overland - 4.7 HO, "Select-Drive", 4" RC long arms, TAG front winch bumper, 32" BFG KM's, 3" exhaust, Magnaflow hi-flow cat, Flowmaster 50 series


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post #19 of 26 Old 06-23-2010, 04:15 AM Thread Starter
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Is the u-joint drive shaft an aftermarket part or do certain models come with them?
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post #20 of 26 Old 06-23-2010, 06:04 AM
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Quote:
Originally Posted by sno View Post
Is the u-joint drive shaft an aftermarket part or do certain models come with them?
Some of the later models came with the u-joint style shaft. My 02 came with one. Check out Car-Part.com--Used Auto Parts Market to search local junk yards.

~James

2002 Overland - 4.7 HO, "Select-Drive", 4" RC long arms, TAG front winch bumper, 32" BFG KM's, 3" exhaust, Magnaflow hi-flow cat, Flowmaster 50 series


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post #21 of 26 Old 06-23-2010, 01:57 PM Thread Starter
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Originally Posted by ezflip View Post
Some of the later models came with the u-joint style shaft. My 02 came with one. Check out Car-Part.com--Used Auto Parts Market to search local junk yards.
Can you do a straight swap from CV to U-Joint drive shaft?

I've tried searching for answers but the 3 character limit doesn't allow me to search for "CV".
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post #22 of 26 Old 06-23-2010, 03:04 PM
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Originally Posted by sno View Post
Can you do a straight swap from CV to U-Joint drive shaft?

I've tried searching for answers but the 3 character limit doesn't allow me to search for "CV".
You would need to swap yokes at both ends as well. It can be done, but the pinion yoke requires a specific torquing sequence as it uses a crush sleeve. If you remove the old yoke and record how much torque it required to loosen the nut, as long as you tighten it back down to the same amount of torque, it should be okay. The yoke at the transfer case is as easy as pulling the old and putting the new one one.

~James

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post #23 of 26 Old 06-23-2010, 08:04 PM Thread Starter
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Originally Posted by ezflip View Post
You would need to swap yokes at both ends as well. It can be done, but the pinion yoke requires a specific torquing sequence as it uses a crush sleeve. If you remove the old yoke and record how much torque it required to loosen the nut, as long as you tighten it back down to the same amount of torque, it should be okay. The yoke at the transfer case is as easy as pulling the old and putting the new one one.
Good to know. Thanks for all the information.
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post #24 of 26 Old 04-21-2016, 06:25 AM
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I saw that remark about the awd on rough country's site too. I am still debating on 3 or 4 inches but mostly it depends on if I can get it in and out of the garage door openning is only 78 inches high. Don't see what the problem would be everyone else that offers 4 inch kits don't have that statement.
They say this because when tested on the AWD models their was a lot of shaking coming from the front driveshaft, I currently run the "Not recomended setup and don't have any problems and even if it starts to shake just buy a steering stabilizer and should help that's what one of my friends ended up doing
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post #25 of 26 Old 04-21-2016, 09:35 AM
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Originally Posted by jeepwj2004 View Post
They say this because when tested on the AWD models their was a lot of shaking coming from the front driveshaft, I currently run the "Not recomended setup and don't have any problems and even if it starts to shake just buy a steering stabilizer and should help that's what one of my friends ended up doing
Steering stabilizer is a bandaid fix, the real fix would be to put a double cardon front driveshaft on. Tons of info out there on this and how to do the swap

,,,soooo I graduated in 2013...
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post #26 of 26 Old 04-21-2016, 09:38 AM
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A steering stabilizer will not do anything to help driveshaft vibrations.

Also, this thread is 6 years old.

~James

2002 Overland - 4.7 HO, "Select-Drive", 4" RC long arms, TAG front winch bumper, 32" BFG KM's, 3" exhaust, Magnaflow hi-flow cat, Flowmaster 50 series


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