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Old 08-09-2010, 05:02 PM   #1
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4.5 Rubicon Express superflex questions

Im getting ready to instal a 4.5 superflex kit by RE on my 02 tj. and was wondering if it was really required or just recominded to replace to Slip yoke eliminator and drive shafts too. i talked to a guy on quadratecs Chat thing and he said its just recominded. but i wanted to get a second opioun before i started taking things apart. and if so how long of a drive shaft do i need, or how can i find out. and what brands are not to expensive but good.

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Old 08-09-2010, 05:18 PM   #2
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You can get a away with a t-case drop, for a while or do the hack and tap re fix with a new rear shaft only. Front shaft is fine. Lift gives closer to 5.5 inches.

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Old 08-09-2010, 05:24 PM   #3
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I put the 4.5" RE long arm kit on mine and the drive shaft vibrated big time so I am pretty sure you will need the sye if you don't lower the t/c, which sort of defeats the purpose of a lift.

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Old 08-10-2010, 07:51 PM   #4
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Gotcha, I went ahead and spent the extra money on it. But over all after that were u happy with the lift? And what kinda tires gear setup did u run?
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Old 08-10-2010, 08:30 PM   #5
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If you had the 3.5 RE i would say you might get away with the T-case drop.
Being that you have the 4.5 RE which will actually net you 5" of lift or better....yea...your gonna need it.
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Old 08-11-2010, 07:35 AM   #6
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I am also getting the RE 4.5 Superflex for my jeep....but mine is a rubicon and wont need a SYE. BUT i will be needin a CV driveshaft which I just ordered from Tom Wood at http://www.4xshaft.com

Jerry turned me on to them and so far his people have been nothing but the best.
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You can lock it..even put a different t/c in it..but its still not a RUBICON!
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Old 08-11-2010, 11:25 AM   #7
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Gotcha, I went ahead and spent the extra money on it. But over all after that were u happy with the lift? And what kinda tires gear setup did u run?
Very happy, the ride after the lift was much better than when it was stock and the stock suspension only had 50,000 miles. So far as gears, they are still stock which is 3.73 and I am running 33" tires, I could use lower gears but I can get by with what I have till the gear money comes in.

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Old 08-11-2010, 12:23 PM   #8
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That's awesome! Yeah I read the reviews on it and that's what I'm hoping for. I had a 98 2 door tahoe with a 6 inch rough county lift. And it rode like a tank.. I decide on this one to just spend the extra money and not feel like I'm gonna die when I drive. Lol, but I haven't decide if I wanna save up and do the whole axle upgrade and get 35,s or get the 33's and worry about that down the road yet
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Old 08-11-2010, 03:29 PM   #9
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Don't forget when you go beyond 33's you have to think seriously about your braking system, my brakes work good with 33's but with 35's I think you would have to upgrade your brake system.

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Old 08-11-2010, 04:58 PM   #10
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Damn.. So best bet is to upgrade my Dana 35 get 4.56 gears with 33,s with a locker? Or I'll be looking to spend a lot of money other wise. Considering prices of tires are more. Id need a whole be axle and gears. Lol and now brakes. Or is this something I can still have fun with and slowly put together. Like over 6 months because I don't want to get a new axle and gears and mess something up. Because I'm running 4.88's with 31's ( what I have now, and untill if save up for rims and tires) and I don't wanna mess up my brakes by ridding with those 35s for a month or two untill I can get new brakes
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Old 08-11-2010, 06:05 PM   #11
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Best bet is to ditch the the D35 and build or buy a custom axle. ford 8.8, ford 9" or D44
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Old 08-11-2010, 06:17 PM   #12
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If you got a manual trans then that will help in the stopping dept. But in an emergency you will not be able to stop very well at all. Talk to some one on here with stock brakes and 35's and ask them how it does in an emergency. And don't think that going to disc brakes will help much cause it won't.

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Old 09-24-2010, 07:03 PM   #13
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Thanks guys!
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