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Old 02-15-2014, 09:53 AM   #1
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2nd opinion needed....

I've been told I really do not need a SYE after my 3.25 inch lift. Told there are mods than can be done to the axles to do the same thing it would do. Person also said "everybody just throws an SYE on, and calls it good when there are other things that need to be done, to make it correct." Before I spend the precious money for all this stuff...(SYE and new driveshaft, and new control arms) I want to know what I should do or believe. Thanks for all good advice.

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Old 02-15-2014, 10:05 AM   #2
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A motor mount lift may correct your driveline angles enough to avoid installing an SYE. Something to do some research about.

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Old 02-15-2014, 10:20 AM   #3
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Are you having vibrations from the driveshaft angle being too steep? You can do a transfer case drop to ease the angles or try a 1" motor mount lift
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Old 02-15-2014, 10:27 AM   #4
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I already have the TC drop, but still having vibes. Are the MML a good way to go, or is it a "cheap" way to go. I want to do it right the first time.
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Old 02-15-2014, 10:31 AM   #5
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Quote:
Originally Posted by 00TJSport View Post
I already have the TC drop, but still having vibes. Are the MML a good way to go, or is it a "cheap" way to go. I want to do it right the first time.
If you want to do it right the first time do a SYE with DC driveshaft and adjustable rear upper control arms to adjust your rear axle pinion angle.
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Old 02-15-2014, 10:40 AM   #6
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Since the lift, the driveability has gone crazy. It's really "twitchy" on the highway. I'm leaning toward all new lower control arms to get wheelbase corrected and SYE/driveshaft combo plus Spicer ball joints from East Coast Gear Supply to get things back in shape. (ball joints are getting sloppy) Opinions??
Been told I should start with the lowers since I'm on a limited budget.
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Old 02-15-2014, 11:19 AM   #7
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Quote:
Originally Posted by 00TJSport View Post
Since the lift, the driveability has gone crazy. It's really "twitchy" on the highway. I'm leaning toward all new lower control arms to get wheelbase corrected and SYE/driveshaft combo plus Spicer ball joints from East Coast Gear Supply to get things back in shape. (ball joints are getting sloppy) Opinions??
Been told I should start with the lowers since I'm on a limited budget.
Did you do an alignment after the lift? Sounds like the alignment is off or more likely your caster angle is insufficient and is making your jeep not want to stay at center while driving.
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Old 02-15-2014, 11:33 AM   #8
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Yes, alignment was done. I think between the ball joints going bad, and all my angles being off, it's causing it to drive like that. IMO
You can see that the wheelbase is off from the lift too. Rear tires are forward....ofcourse. I just don't want to buy the SYE if I dont have to.
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Old 02-15-2014, 12:48 PM   #9
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How is your 3.25" lift achieved? Is it a 2" suspension + 1.25" body lift? If that's the case, a MML "should" correct your driveline without a TC drop. If the whole lift is 3.25" suspension, SYE/CV and adjustable arms is the way to go if you don't want a TC drop.
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Old 02-15-2014, 02:17 PM   #10
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How is your 3.25" lift achieved? Is it a 2" suspension + 1.25" body lift? If that's the case, a MML "should" correct your driveline without a TC drop. If the whole lift is 3.25" suspension, SYE/CV and adjustable arms is the way to go if you don't want a TC drop.
Its the Rough Country lift. 3/4 inch coil spacers with the new 2.5 coils. All suspension. Kit included the tc drop.
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Old 02-16-2014, 07:05 AM   #11
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Why am I seeing some control arms with a bend, and some not? The big name companies show straight ones that can be used for front OR rear.
Can someone explain that?

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