| Author |
Message |
    
Randall Smith
| | Posted on Friday, April 19, 2002 - 01:54 pm: | 
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On Wednesday we put 4.11 gears and true-tracs in, along with HD axles in the rear, and 24 spline up front. My 92 RR does not have ABS(it was a special model) so we also ended up putting in ABS type hubs and spindles to get the axles to fit right. Fortunately this was done at the Rover Clubhouse so we had plenty of doner trucks to pull parts from. So I have now converted to 24 spline front and rear.
Unfortunatly there is a lot of driveshaft vibration now. Putting new third members(GBR setup)on the truck somehow drastically increased the driveshaft vibration. Before it was just a hum at 55-65mph, now it is an embarrasing vibration which ruins the RR freeway experience. Ordered a Tom Woods front drive shaft today. May try removing the front driveshaft for a test drive this weekend.
Anybody else put new diffs in and get the shakes? Only have a 2" lift, and there was a hum before, but nothing like this.
Randall |
Craig M. Highland (Shortbus)
| | Posted on Friday, April 19, 2002 - 08:15 pm: |
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Well, If all you didn't mess with ride height/pinion angle/ castor etc... I'd say the pattern on the gears is messed up...
Does it vibe all the time, on just accel/ or just decel etc...?
Craig |
p m
| | Posted on Friday, April 19, 2002 - 08:31 pm: |
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Randall, could it be something as simple as not fully seated u-joint bearing caps?
one thing i'd try is to pull the driveshafts one at a time and drive it on the hwy to see which one causes it. (If your VC in the transfer case isn't fried, you should be able to do it, just don't abuse it).
Craig, the contact pattern on the gears must be messed up a lot for the vibrations to appear. And the gears were set at GBR.
BTW, Craig, email me if you wish - i didn't want to turn the slinky thread into a LR vs JP discussion. I tried to find your email but it's not in your profile.
peter |
Craig M. Highland (Shortbus)
| | Posted on Friday, April 19, 2002 - 08:47 pm: |
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Peter-
[email protected]
I know that the coast side pattern of my 4.11's was a little low, and on decel I get a little vibe, but nothing I can't live with... fwiw.
swivel preload maybe???
Craig |
Ron
| | Posted on Friday, April 19, 2002 - 08:57 pm: |
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Well since you swapped in about 4 thousand new things.
Could be: hubs, bearings, did you put the front TT in the front and the rear TT in the rear (makes a HUGE difference ie BOOM hehehe if you get it wrong)
It is recomended to mark the T-case and DS if you seperate them (you should not have had to)
Anyway. The DS is NOT the answer. Something else is. If it did not have an issue before then somethign you changed is the issue. while I like the people at RCH I don't think any of them are trained mechanics.
Ron |
Randall Smith
| | Posted on Saturday, April 20, 2002 - 12:36 pm: |
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Thanks for your responses. There is no clear solution here, and vibrating driveshafts is not what I was expecting to sort out.
Will keep you posted.
Randall |
Anonymous
| | Posted on Friday, May 10, 2002 - 08:39 pm: |
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After viewing this BB for a while &
having a bit of work & mods done to my disco
by rover club house I feel that I must contradict
Ron's statement to the level of experience &
certification of the staff on site.
RCH has a ASE certified master tech with over 20yrs experience in all makes & has been a rover owner since 1987.
thats good enough for my Disgo!
and the prices sure beat the dealers!
RR DVM |
Manuel Sandoval (Manuels)
| | Posted on Saturday, May 11, 2002 - 01:29 am: |
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Isn't Rover Club House the place that issues gift certificate for every screw up they make?
Almost makes me think that those gift certificates can't be redeemed. |
Randall Smith
| | Posted on Saturday, May 11, 2002 - 11:26 pm: |
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Actually my truck is still vibrating when the front driveshaft is on. I already put on a new Tom Woods driveshaft which helped but didn't cure the problem. Tried replacing the front output bearing on the BW transfer case, which helped a little, but again did not cure the problem.
What's weird is that with the new output bearing...sometimes I get 1/8" play out of it, but most of the time it feels really solid. Tommorrow (sunday morning) I am going to LR Cary and am going to test the drive shaft play on all the RRCs on the lot with BW transfer cases.
I think we swapped too many parts in one day, many of them used. Not mad at Rover Club House, but very disturbing that my truck vibrates now, and I am going to go insane or find the vibe source.
Randall |
JB
| | Posted on Monday, May 13, 2002 - 09:59 pm: |
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Were the 3rd members set up for YOU or did you buy them used and possibly out of whack from previous owner use/abuse..
Maybe the front end has steering slop that is accentuated when the front drive shaft is in and causes increased vibration, never heard of it happening before, but if you are grabbing at straws ..Preload issue maybe??
I guess you are learning to measure/compare pinion angles... bummer
Since you don't have ABS are you gonna throw in some 1 ton cvs for the front to further bulletproof that sucker.
Keep us updated on LR Cary |
Randall Smith
| | Posted on Tuesday, May 14, 2002 - 11:22 am: |
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JB
The 3rd members were set up by a local speed shop, and this concerns me. But many people say that if there was a problem in how it was set up, then it would be obvious. I might take the diff off and send it to GBR to check it out. And also consulting with GBR about driveshafts/CVs.
Randall |
Luke
| | Posted on Tuesday, May 14, 2002 - 08:26 pm: |
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Randall, you contradict yourself.
first you have a vibe at low speeds
then after RCH upgrades your drivetrain
with lower gears & lockers your troubles are said to happen at higher speeds.
it seems that the problem you complain of was there long before any work was done by RCH.
now you place the problem on the mods done
instead of recognizing the fact that you felt
something wasnt right & never told RCH such
before any work had been done!
BTW; your rig has less vibes than my wifes stock 91 classic!
LP |
Randall Smith
| | Posted on Wednesday, May 15, 2002 - 12:56 am: |
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Luke
Actually almost every word in your post is incorrect. You can blame me and make up stories, but that doesn't change what happened before, during or after the conversion. All I want to do is fix the problem so I can enjoy the setup, and move on to the next upgrade.
Randall |
Kyle
| | Posted on Wednesday, May 15, 2002 - 01:10 pm: |
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Pinion bearing....
Kyle |
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