ECGS bushing

Are you lifted? I'd yes. A Carrier Bearing drop might solve your shutter.

 

Yes, Bilstein 5100s at 2.5". Are you referring to a diff drop?

 

No, rear ( actually above rear axle) Carrier bearing

 

I see, well the vibration goes away if i put the truck in 4HI. So i assume that its all coming from the front, not the rear?

 

Also, only have a general spring 3+1 rear leaf spring pack with stock length bilstein 5100s in the rear. Just slightly lifted

 

https://www.google.com/search?q=wha...PVAhVJzmMKHZJ-COsQrQIILSgEMAA&biw=598&bih=336

 

Seeing all the threads on this now for the first time. Thanks for the lead. I sure hope something this simple can solve the vibrations, ill post an update when i get around to it

 

Your welcome. I'm not an expert but from reading, I used one with my rear Dakar leaf packs and I have not had any. Can be hit or miss, could need different height drops. You will read in the threads
Gl

 

Right, ive gathered the same thing, how far did you drop yours? Probably will start at 1/4" and see what happens..

 

IIRC... http://www.partsgeek.com/j4d231z-to..._term=Toyota+Suspension+Lowering+Hardware+Kit

 

I bought the leafs and cb drop kit from Headstrong offroad at the same time.

 

Dropped the carrier bearing 1/8", no difference, 1/4" no difference, and 3/8". No difference. Still have the shudder from a complete stop and small vibration at low speed.
Put it back to stock. Back to the drawing board.

 

All the 'ask me how I know' got me lolling

 

Shimmed the rear axle 2°. Huuuuuge improvement. Although the take off shudder isn't completely gone, it is hardly noticeable now. If i really ease into the take off, it won't even shudder. Any speed from 15-80MPH the truck is CADILLAC smooth!

Tried combining CB drop at 1/8", 1/4", and 3/8". But with no success, in my opinion it was worse with any of the 3.

BUT, still not good enough, take off shudder needs to be eliminated COMPLETELY. Next step: take apart the carrier bearing, pack it with rubber to eliminate all of the play that it has and see if it helps. If that doesn't do it, I will calculate the driveline angles, and determine if the rear axle needs to be shimmed more, or less. Im thinking more. One step at a time though! Stay tuned..

 

Welcome to the club. Many of us have been chasing that gremlin down for years. I got 3-degree shims and dropped the CB a bit. Helped a little, but it's still very noticeable.