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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: blasted879 on January 01, 2007, 01:34:43 PM

Title: sami drivetrain vibration???
Post by: blasted879 on January 01, 2007, 01:34:43 PM
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!
Title: Re: sami drivetrain vibration???
Post by: ROSS on January 01, 2007, 02:45:22 PM
make sure the drivelines are slipped together right.  line up the dots . gets most people
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 01, 2007, 03:17:10 PM
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!
Title: Re: sami drivetrain vibration???
Post by: ROSS on January 01, 2007, 04:43:33 PM
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
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 01, 2007, 06:28:22 PM
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?
Title: Re: sami drivetrain vibration???
Post by: ROSS on January 01, 2007, 07:02:33 PM
what about the intermediate driveline between the tranny and t-case
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 01, 2007, 07:11:43 PM
what about the intermediate driveline between the tranny and t-case

hmmm never checked that? gonna check right now!
Title: Re: sami drivetrain vibration???
Post by: ROSS on January 01, 2007, 07:19:15 PM
i know someone who took his rear diff  apart looking for a vibration.  afterward found a bad u-joint in the intermediat shaft
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 01, 2007, 07:28:37 PM
ok i just checked and the u-joints looks good...... but i found the trans mount is history! that should be the problem???? hopefully :-[
Title: Re: sami drivetrain vibration???
Post by: ROSS on January 01, 2007, 07:30:47 PM
maybe . good luck
Title: Re: sami drivetrain vibration???
Post by: flexmonger on January 01, 2007, 07:47:18 PM
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.
Title: Re: sami drivetrain vibration???
Post by: W.O.T on January 01, 2007, 08:12:50 PM
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
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 01, 2007, 08:24:46 PM
all my u-joints look ok???

(http://img.photobucket.com/albums/v643/blasted879/beesstuff018.jpg)

hows does the pinion angle look????
Title: Re: sami drivetrain vibration???
Post by: flexmonger on January 02, 2007, 05:54:32 PM
  Can you show me a pic of both the tcase and diff driveline angle at the same time?
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 02, 2007, 07:39:12 PM
(http://img.photobucket.com/albums/v643/blasted879/beesstuff024.jpg)

and you think the spring can have somrthing to it too? see the first leaf?
(http://img.photobucket.com/albums/v643/blasted879/beesstuff022.jpg)
Title: Re: sami drivetrain vibration???
Post by: flexmonger on January 02, 2007, 07:54:37 PM
  Ya that drivline is maxed out in its operational angle. To much angle on both ujoints to cancel each other out. You need to lower it or alleviate the angles on the driveline. A cheap option would be to use a lengthened slip yoke from TT and use a rear drivline spacer. But that will not alleviate much from the driveline. It would be wise to invest in a toyota front driveshaft with rockrat adapters or a custom chev blazer double cardan driveshaft from Woody's, Six States, or a KAD drivehaft fom RRO.  If you daily drive it, dont get the KAD driveshaft.
Title: Re: sami drivetrain vibration???
Post by: RShrimp on January 03, 2007, 07:51:08 AM
You said you have a vibration around 3000RPM Does this mean in any gear? or only in 5th gear?????

If in any gear then it's not driveline at all but engine.

The u-joints have to line up as stated earlier but the angles also have to be the same.

Put an angle guage on the 2 spacers (the flat) Both have to have the same angle to counteract the accel / decel of a standard ujoint.

With a 3 inch lift + a spring over I would think that it would be wise to have a new rear driveshaft made with a CV in the front and then turn your rear end nose up so the rear ujiont is nearly straight.
When you add a CV (stands for constant velocity) this will stop your drive shaft from accel/decel on each revolution. If you do this you have to straighten out the the ujoint in the rear
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 04, 2007, 07:01:09 PM
ok thanks guys! gotta save some money for a cv drive shaft! where the best place to get one? i want  to get a complete set up. shaft, adapters whatevers. just want a complete set up!
Title: Re: sami drivetrain vibration???
Post by: flexmonger on January 04, 2007, 09:25:15 PM
  As far as I have seen the yota driveshaft conversion is a diy project, not sold as as a just install version. Six states , Woody's, KAD drivelines along with other local vendors in your area make direct bolt in driveshafts for your vehicle. Though more money, less time fabricating or waiting and providing a quality product and confidence on or off the trail are some benefits. My 2 cents. Toy shafts are some what cheap and plentiful for this conversion, especially if converting to toy axles later. Custom shafts with american ujoints and spline and everything else are way easier to work on later down the road. Everything is cheaper for them and to me appear to be beefier.
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 05, 2007, 12:54:06 AM
well gonna check out my local driveline shop tomorrow... thanks for all help guys!!!!
Title: Re: sami drivetrain vibration???
Post by: Amilla on January 05, 2007, 09:31:24 AM
If you can find it, the front drive shafts out of a 84 -85 yota are high angle drive lines, work great for the sammi's. 
I have a 2000 tacoma front drive line and im cusious to see if it works. 

Amilla
Title: Re: sami drivetrain vibration???
Post by: blasted879 on January 06, 2007, 02:16:03 PM
ok just ordered my rock rat adapters... toyota shafts here in hawaii are floating around like madd!!!! so its pretty easy to get! let you guys know how it goes!!!!! thanks!
Title: Re: sami drivetrain vibration???
Post by: ack on January 07, 2007, 09:09:56 AM
Also, try a search for driveshaft at Ack's FAQ (link in signature...).  Links to articles with lots of useful information confirming and elaboating (pictures!) on the subjects covered in this thread.