Vibration

[jkl72-40]

82 truck OME 2Inch lift no vibration til 40mph, then vibration from 40 to 60 then goes away. Also it goes away when you push clutch in... So U joints??
Any Ideas?

 

[jgranthevagrant]

Check the entire drive train. I have had joints come loose in a single trip.

 

[inkpot]

82 truck OME 2Inch lift no vibration til 40mph, then vibration from 40 to 60 then goes away. Also it goes away when you push clutch in... So U joints??
Any Ideas?

Quick easy test is to just grease the ujoints and the slip joint and see if it makes any difference. John

 

[jkl72-40]

OK so if Nothing is loose and is all greased then what?

 

[GRM]

Does it just vibrate or does it also have a roar sound when your on the gas?

 

[John Galt]

Does it only vibrate when the front hubs are locked in?

 

[jkl72-40]

no difference in either 2wd or 4wd and no it doesnt matter when steppin on the gas

 

[John Galt]

I would suspect the rear shaft slip yoke splines are worn

 

[flash02]

Tire balance? Wheel bearings? Bent axel? Bent drive shaft?

 

[jkl72-40]

ok found out that the rear driveshaft needs to be rebuilt. any suggestions on new vr rebuilt. what needs to be done. anu other info would be good to

 

[cadot]

Did you put the shaft back together correctly after the lift? The top and bottom u joints need to line up. I would buy a good used shaft before getting one rebuilt. Just check for play in the joints. I am selling mine for my 80 short bed since i swapped in a w56.

 

[KLF]

I would suspect the rear shaft slip yoke splines are worn

I agree. Mine are slightly worn, but i found a huge improvement when i used "Green Grease" on them. That stuff is very thick and very waterproof, I use it only on driveshafts (u-joints too). Vibration vanished, although i know I'm on borrowed time...

 

[jkl72-40]

yup confirmed its the rear slip yoke.. Do I need a longer drive shaft with a OME 2.5 lift? I dont think so but just thought I'd ask... I should be able to r/r the slip yoke right? replace the u joints front and back on the rear d shaft and be good. Correct??

 

[KLF]

I have OME springs, and I made up some plates to move the rear axle 1" forward.

 

[jkl72-40]

Picture?

 

[jkl72-40]

Just to see if I could do this from my phone

 

[KLF]

Those don't look like OEM U-joints or flange bolts to me.

 

[jkl72-40]

do you have a picture of how you moved the axle 1" forward?

 

[pappy]

Those don't look like OEM U-joints or flange bolts to me.

I agree.

 

[KLF]

do you have a picture of how you moved the axle 1" forward?

This is the driver's side. They are a homemade version of these:

https://www.allprooffroad.com/8489suspension/8689relocationplates