can't figure out this vibration

[2GFWDbeast]

None of the wheels have in and out play nor side to side. Tires are pretty much brandnew. the vibration starts around 40mph. Once i get to around 65mph its like in and out vibration if that makes any sense. Could it be axles maybe. the vibration starts in the steering wheel then once i speed up to 65mph it has the in and out vibration threw the seat.


Note: Car is lowered with springs, and power steering is deleted tho still have the original rack and pinion. Car is a 1990 gsx. I also found that i have 2 missing nuts on the driver side motor mount. The main bolt and nut are in-tacked. If your looking at the motor head on and the on the driver side there are 2 bolts, those are the ones that are missing the nuts.

 

[talondave]

Stock drive shafts like to cause vibrations with worn out carrier bearings.
Take a look at your carrier bearings and look for dry cracked rubber, and see if the shaft is off centered in the bearing!
Those two nuts are not a big deal, don't really need them!

 

[2GFWDbeast]

speaking of the drive shaft i just replaced mine cause the rubber was ripped on both of them. Could axles cause what im feeling? After replacing the drive shaft, i still have the vibration. Could it be possible its out of balance.

 

[2GFWDbeast]

Stock drive shafts like to cause vibrations with worn out carrier bearings.
Take a look at your carrier bearings and look for dry cracked rubber, and see if the shaft is off centered in the bearing!
Those two nuts are not a big deal, don't really need them!

Finally figured out the problem my driver side axle was completely shot.

You must be logged in to view this image or video.

hmmm. seems to be missing a bearing

You must be logged in to view this image or video.