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  #11  
Old 03-27-2009, 07:43 PM
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Originally Posted by zukkev View Post
Looks Great Ducky!!! Hey, just a thought---maybe the motor mount lift is supposed to take care of the last bit of the vibes you have???
Possibly, But I would think that it would be no different than adjusting the pinion angle. It would change the CV angle true, but the whole intention of the CV is to accommodate the extreme angles isn't it? Ia m leaning toward a bad U joint or even the ball in the CV.
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  #12  
Old 03-28-2009, 08:21 AM
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The MM lift helps take a bit of the angle out of the CV. With the belly up, you actually have the rear t-case output on a more upward direction. Increasing the angle on the CV, thus more chance of faster wear on components and resulting vibration.

You did put in a small body lift? 1.25"

The MM lift, small body lift and belly up all sort of work well together. Done this to several Jeeps. The MM lift has reduced and in some cases eliminated drive shaft vibes. Amazing what a few degrees can do
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  #13  
Old 03-28-2009, 10:36 AM
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Originally Posted by Indefatigable View Post
The MM lift helps take a bit of the angle out of the CV. With the belly up, you actually have the rear t-case output on a more upward direction. Increasing the angle on the CV, thus more chance of faster wear on components and resulting vibration.

You did put in a small body lift? 1.25"

The MM lift, small body lift and belly up all sort of work well together. Done this to several Jeeps. The MM lift has reduced and in some cases eliminated drive shaft vibes. Amazing what a few degrees can do
Hi Ya Wes,
No, I did neither. The body lift is only needed with the Rubicons because of the larger tranny according to TeraFlex. Maybe I should do the MML.... just to see. I really do not want to do a Body Lift unless I absolutely have to.
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  #14  
Old 03-28-2009, 11:14 AM
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The motor mount lift will end up causing the bell housing to connect with the fire wall. Not to mention the fan into the shroud. Rubicon era Jeeps have a larger cavity for the t-case, does not help at the firewall clearance.

The JKS body lift is 1.25" and they are nice pucks that are larger diameter than most and actually wrap around the rubber body mounts for a nice secure fit. Combined with the JKS 1" MM lift, both mods counter the negatives of each's installation. The JKS body lift is not really noticeable.

What you will now notice is that with the MM lift, the exhaust now vibrates on the frame end of the UCA pass side. It was only annoying for a few months before I cut the mount off and put in long arms
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  #15  
Old 03-31-2009, 04:04 PM
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Do the 2.5s have the same clearance's as the 4.0's? Cuz I gots the baby motor.
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  #16  
Old 03-31-2009, 04:13 PM
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I think the issue is the bell housing and the fire wall. Go have a look and see if there is room to move it up an inch or so and still be able to get to the bolts at the top of the bell housing.

Its just that easy
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