ok wassup everybody, i'm new here, just picked up a 86 samurai, its got SPOA, 3 inch calmini springs, missing links from rocky-road, 4.16 t-case, 31 swamper ssr's, and i got a real bad vibration at a certain rpm, around 2-3 grand. after that it goes away but still can feel it a little... tried shimming and and its still there! any help would br appreciated!

make sure the drivelines are slipped together right.  line up the dots . gets most people

make sure the drivelines are slipped together right.  line up the dots . gets most people

oh didn't know there was dots!!!! its on the shaft right? gonna check it out now!

pull it  apart.  on the end of spline shaft theres a punch mark on the end. the receiving end pullthe boot off the other punch mark is there

                                                            Ross

ok i checked and is all good! i even swapped it out with another drive shaft and the vibration is still there...   whats the pinion angle supposed to be at?

what about the intermediate driveline between the tranny and t-case

what about the intermediate driveline between the tranny and t-case

hmmm never checked that? gonna check right now!

i know someone who took his rear diff  apart looking for a vibration.  afterward found a bad u-joint in the intermediat shaft

ok i just checked and the u-joints looks good...... but i found the trans mount is history! that should be the problem? hopefully

maybe . good luck

ok wassup everybody, i'm new here, just picked up a 86 samurai, its got SPOA, 3 inch calmini springs, missing links from rocky-road, 4.16 t-case, 31 swamper ssr's, and i got a real bad vibration at a certain rpm, around 2-3 grand. after that it goes away but still can feel it a little... tried shimming and and its still there! any help would br appreciated!

   I don't know why no has mentioned this earlier, but I bet your too lifted for your driveline. A spoa and 3" lift springs is overkill for a stock sammy driveline and driveline working angle. Do you have a toyota cv or custom made cv shaft for the rear ? If you do not, you may think of upgrading to one and adjusting your pinion angle.

im having the same problem wih my samurai.  it started as a squeeking noise coming from somewhere near the transfer case.  it has gottten really bad and started vibrating big time.  im going to work on it tomorrow but i think its a worn out u joint on the shaft from the tranny.  thats where the sound seems to be coming from.  goodluck

all my u-joints look ok???



hows does the pinion angle look?

  Can you show me a pic of both the tcase and diff driveline angle at the same time?

and you think the spring can have somrthing to it too? see the first leaf?