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Old 09-27-2008, 07:04 AM   #1
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sye vs the stock driveshaft

if i put the re 3.5 superflex lift on my 2005 will i have to do the sye conversion then or will the stock driveshaft work untill i get around to that modification thanks

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Old 09-27-2008, 10:40 AM   #2
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im running the re 3.5 super flex now with the stock Dshaft. i had to drop the tcase an inch. as soon as funds free up for a SYE and shaft ill be swapping them on. Ive wheeled the hell out of the jeep for over 2 years with the stock dshaft with no vibes or issues

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Old 09-27-2008, 11:10 AM   #3
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ok thanks thats the kind of info i am looking for i hate to buy it all at one time it gets faily expensive what size tires are you running
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Old 09-27-2008, 09:37 PM   #4
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You'll be fine. I've got a 4" Pro-Comp lift with the stock ds and a tc drop kit and it's been ok. the only downside is that you'll hit a few more rocks when wheelin', but once you get over that sound, it's all good.
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Old 09-28-2008, 12:58 AM   #5
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im running 33x12.5x15 trxus MTs
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Old 09-28-2008, 01:23 AM   #6
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Originally Posted by mknight759 View Post
ok thanks thats the kind of info i am looking for i hate to buy it all at one time it gets faily expensive what size tires are you running
$180 for a SYE, and $100 for a cut down XJ shaft. SYEs setups are cheap if you already have the control arms.
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Old 09-28-2008, 04:09 AM   #7
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atleast you are asking this before installing the lift.. If you have a auto 4speed trans.. plan on getting an sye and shaft.. I did mines with the 1 inch tc drop and the vibes were still there.. Now after the sye.. I still have a humming noise around 50-60 mph. For some reason you get more vibes with a 4 speed trans.. I bet it is because the lenght from the shaft and the diff is a lot closer than a 5 or 6speed transmission.
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Old 09-28-2008, 08:10 AM   #8
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yes it is the auto trans how bad was the vibes what was raw and surf do they have they auto or stick chris says get a xj driveshaft cutdown is it sheaper to go that way or should i just go ahead and buy new driveshaft
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Old 09-28-2008, 09:46 AM   #9
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what about the 3 speed auto? better or worse?
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Old 09-28-2008, 01:35 PM   #10
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mknight.. I am definately sure you will need a sye.. Trust me its bad.. not even with a 1'' TC drop.. I had no issues with a 2'' spacer lift without a tc drop. but man with the 3.5 lift.. the slight vibes with the sye is annoying.. but livable.

I believe the 3 speed trans would have less vibes.. do a search. here and other jeep forums..

O and I tried everyhing.. different angles for the shaft and even rebalanced it.. I know its the shaft that still cause a slight humm, I pulled the rear shaft out and drove and it was fine..FTW
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Old 09-28-2008, 01:45 PM   #11
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ok thanks it is a 05 so it has the od model i dont know if there is a length difference but it sounds like i just need to do it all at one time lift sye tires and rims then maybe i can run it with od off untill i get new gears looks like an easy way to spend 4 grand
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Old 09-28-2008, 04:07 PM   #12
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yeah running it with OD off does help.. but you haver to press it everytime you start the jeep.. it just humms at a different cruising speed..

it just sucks that I spent all the money to do it right and its still there.. you will probably many of my other post of me whining about this

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