One piece driveshaft

[KVOFTN]

I recently had the Eibach 2.0 front struts, their pro rear shocks, and OME rear springs.
I specifically wanted this set up as I wanted better rear springs and I wanted to be able to level the front out with the lift of the rear.
After the install the truck developed the launch shudder.
tried to shim the carrier bearing with no succes.
By shimming the bearing found that created too much angle at the tcase.

I have since put the stock springs back on and I still have the vibration. Not as much as when the ome springs were in.

I think if one could put a one piece shaft in that it may get rid of the vibration?

mind you before any of this I had no vibration.

also another note I found the front struts would not raise the front even after turning the springs up.

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[geophb]

Is the center bearing still shimmed with the factory rear setup (stock springs and blocks)?

 

[KVOFTN]

Is the center bearing still shimmed with the factory rear setup (stock springs and blocks)?

No it’s put back to stock

 

[geophb]

A one piece would probably help. Two-piece are better clearance underneath and high speed balance. But when lifting, they run into angle problems because of the short distance vs a one piece.

I'm wondering if you didn't shim it enough. You can shim a two-piece to perfectly straight and it will operate normally but the center ujoint can wear out slightly faster because its not being "used".
I would assume you would need to put a tilt on the center bearing if you are going to shim that much because I believe the stock one is basically vertical.

A one piece will have the more angle at the trans ujoint vs a shimmed two piece unless shimmed all the way to straight.

 

[KVOFTN]

A one piece would probably help. Two-piece are better clearance underneath and high speed balance. But when lifting, they run into angle problems because of the short distance vs a one piece.

I'm wondering if you didn't shim it enough. You can shim a two-piece to perfectly straight and it will operate normally but the center ujoint can wear out slightly faster because its not being "used".
I would assume you would need to put a tilt on the center bearing if you are going to shim that much because I believe the stock one is basically vertical.

A one piece will have the more angle at the trans ujoint vs a shimmed two piece unless shimmed all the way to straight.

I had shimmed 1/2 inch. The launch vibration was drastically reduced but then it creates high speed vibration and decel whine.
It’s quite frustrating. Especially that I am back to stock and the vibration is there. Obviously created by the lift springs.

 

[Metalshift]

Have you adjusted the pinion angle ? The ome springs would likely need to be shimmed to match the center u joint angle.

 

[NvrFinished]

After the install the truck developed the launch shudder.
tried to shim the carrier bearing with no succes.
By shimming the bearing found that created too much angle at the tcase.

I believe you are approaching this from the wrong point. Did you check the rear axle pinion angle as directed by the TSB? The shimming should be done via the axle and not the carrier bearing.
https://www.ranger5g.com/forum/attachments/tsb-20-2277-pdf.53487/

 

[Ranger8729]

Have you adjusted the pinion angle ? The ome springs would likely need to be shimmed to match the center u joint angle.

^this. Coming from multiple Jeeps the rear pinion will be forgotten with a lot of lifts. Can create some havoc!

 

[Metalshift]

Basic 2 piece design:

"Angle setup for two-piece shafts is similar to the one-piece. All three working angles should add up to zero. The easiest way to do this is to mount the front shaft section so it has zero degrees through the joint at the transmission. The rear shaft may then be treated as if it were a single shaft. Sometimes this is not possible and all three angles must be juggled to arrive at zero. It is a good idea to allow for some up and down adjustment at the center support mount so the angles may be tuned as necessary once the car is driven. Vehicles that do not have the proper angles set in the driveline components will experience pulsations that will cause vibration in seats, mirrors, gearshift levers, and other miscellaneous parts. These pulsations can also destroy transmission clutch packs, tailshaft housings, rearend bearings, gear sets, and axles. Another concern in this area is a compound angle that comes about if the centerline of the differential is not in direct line with the centerline of the engine and transmission. Luckily most rodders are visual conscious when setting up the rearend and use housings with the pumpkin centered perfectly in the center of the vehicle. Pay equal attention to avoid any compound angles while setting up the engine/trans relationship to the rearend. Setting up the components right from the beginning can save a lot of frustration and costly repairs down the road. "

Hotrod, nov 14, 2006

link. www.hotrod.com/articles/0608rc-driveshaft-tech/

 

[KVOFTN]

Have you adjusted the pinion angle ? The ome springs would likely need to be shimmed to match the center u joint angle.

I did not have time and put it back to stock as I was not going to drive 4000 plus miles.

Are you saying I should be ok just shimming up the rear diff to achieve the angle of the center joint?

 

[KVOFTN]

I believe you are approaching this from the wrong point. Did you check the rear axle pinion angle as directed by the TSB? The shimming should be done via the axle and not the carrier bearing.
https://www.ranger5g.com/forum/attachments/tsb-20-2277-pdf.53487/

I did order the kit but stock shims is in spec of the TSB.
after lifting this tsb would not apply.

 

[Tremors]

I had shimmed 1/2 inch. The launch vibration was drastically reduced but then it creates high speed vibration and decel whine.
It’s quite frustrating. Especially that I am back to stock and the vibration is there. Obviously created by the lift springs.

Do you still have the deceleration whine now that you're back to stock. I am in the same boat but I still have the ome leaf pack installed.

 

[KVOFTN]

Do you still have the deceleration whine now that you're back to stock. I am in the same boat but I still have the ome leaf pack installed.

I could not get rid of it. I traded it in for a F150.

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