Has anyone raised their suspension to 50mm over standard and then noticed vibration/ driveshaft binding in the front?
Just put some 30mm over standard Dobinson springs in. Tried the back into the front to give it 50mm (just to see if it liked it), but the car was vibrating too much.
OK for dropping the diff while wheeling, but forget it on the road.
I also used their front shocks, which allow the diff to drop down to the max amount without 1) binding the unis and 2) driveshaft touching the sway bar.
Lowering the sway bar wouldn't help, as the uni won't allow further movement down anyway.
Seems to me for further travel you would have to remake the front shaft with a cardan joint? Has anyone done this?
In the rear, the car has a semi stuffed pair of Bilsteins, so I don't know how far the stock ones are supposed to travel. I do know I could get up to 75mm more downward travel before the spring tries to pop out. But then I don't want the shock to bottom out on upward travel.
Can anyone make any recommendations for the rear, without having to relocate the chassis mount to prevent the shock bottoming out? The new springs are 30mm over standard and somewhat stiffer. Chances of hitting bump stops is minimal and I will not be jumping anything in this thing!
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RR & Disco diff articulation
Moderator: Micka
Most RR/Discos donot have issues with 30-50mm lifts.
Mine did not start to to vibe untill I reached 80-90mm.
Check all unis to make sure all are ok.
Michael.
Mine did not start to to vibe untill I reached 80-90mm.
Check all unis to make sure all are ok.
Michael.
Mitsubishi 2010 NT DID Pajero wagon, Factory rear diff lock, Dual batteries, ARB bar, winch, Mt ATZ 4 rib tyres.
1986 RR.
Custom suspension links etc.
HSV 215 engine.
4.3 diffs.
1986 RR.
Custom suspension links etc.
HSV 215 engine.
4.3 diffs.
That's what I've been reading, but if I put the rears into the front (the new 30mm overs that is, giving 50mm over standard while sitting) I end up with prop shaft vibration from the front.
In this position (with this spring in the front) I can also see that the front uni on the t-case will not go much further before binding when the sitting height is 50mm over standard. The uni has no wear, so it isn't that that causes the vibration.
Spoke to the guys at Dobinsons and they had the same result when they designed the springs using a (I think) a 99 Disco.
So, my car is sitting at 30mm over standard with no adverse vibrations and wheel travel all the way down to the point where the drive shaft almost touches the front sway bar and the uni will not really like going lower.
Not trying to argue with anyone, just curious if people really have achieved a true 50mm over standard ride height with these cars, as I can't with mine. Not without a cardan joint, anyway!
In this position (with this spring in the front) I can also see that the front uni on the t-case will not go much further before binding when the sitting height is 50mm over standard. The uni has no wear, so it isn't that that causes the vibration.
Spoke to the guys at Dobinsons and they had the same result when they designed the springs using a (I think) a 99 Disco.
So, my car is sitting at 30mm over standard with no adverse vibrations and wheel travel all the way down to the point where the drive shaft almost touches the front sway bar and the uni will not really like going lower.
Not trying to argue with anyone, just curious if people really have achieved a true 50mm over standard ride height with these cars, as I can't with mine. Not without a cardan joint, anyway!
Bill, you're a champion!
Just checked the alignment of the shaft, our previous owner (or mechanic) has been fiddling with the drive shaft and has mucked it up!
That'll give me something to do tomorrow night.......
Even so, the 50mm lift left it very close to where the uni on the t-case wouldn't give me long term loving.......
Alex.
Just checked the alignment of the shaft, our previous owner (or mechanic) has been fiddling with the drive shaft and has mucked it up!
That'll give me something to do tomorrow night.......
Even so, the 50mm lift left it very close to where the uni on the t-case wouldn't give me long term loving.......
Alex.
Alex, you should note that due to the angle of the front diff, Rangeys/disco's and Defender front propshafts are intentionally out of phase by about 2 splines on the slip joint to cancel out vibrations. If you test drive it with only 2 bolts attaching the propshaft to the diff,to make it easier to unbolt, by indexing the slip joint 1 spline at a time you should be able to find the optimum phasing for your new suspension height.
Bill.
Bill.
up2nogood wrote:Spoke to the guys at Dobinsons and they had the same result when they designed the springs using a (I think) a 99 Disco.
The Dobinson 2" lift is about 70mm AFAIK on the Disco2. They definately don't vibrate with that lift as they've gone to a double cardin front propshaft.
Cheers
Slunnie
Discovery TD5, Landy IIa V8 ute.
Slunnie
Discovery TD5, Landy IIa V8 ute.
The series 2 Disco's started in 1999 and are the ones that have the TD5, sticky out door handles, ETC, are a bit longer in the boot and have the small ring of wheel nuts. These all have the double cardin front propshaft and I'm pretty sure they will interchange with Defenders, original Disco's and I would assume Rangies with the LT230 transfer case also.
Cheers
Slunnie
Discovery TD5, Landy IIa V8 ute.
Slunnie
Discovery TD5, Landy IIa V8 ute.
Your front driveshaft may not be an original. I bought a "new" driveshaft from a dealer in Melbourne which bound up when the diff dropped, with just OME springs in the front. I ended up putting in a 2nd hand standard disco shaft which won't bind now with the OME and 30mm spring spacers.
No front swaybar to get in the way though!
I had REALLY bad vibes when the internal splines started to wear out (lack of lube) but that's probably not the case with your driveshaft.
If you definately want to put 50mm+ lift in, and you're current shaft doesn't like it, put in a double cardan series 2 shaft in. They shouldn't be too pricey 2nd hand, just don't ask for a new price! I think it was something like $800 for a brand newey from UK!
As other people have said though, some front shaft's go fine with big lifts.
No front swaybar to get in the way though!
I had REALLY bad vibes when the internal splines started to wear out (lack of lube) but that's probably not the case with your driveshaft.
If you definately want to put 50mm+ lift in, and you're current shaft doesn't like it, put in a double cardan series 2 shaft in. They shouldn't be too pricey 2nd hand, just don't ask for a new price! I think it was something like $800 for a brand newey from UK!
As other people have said though, some front shaft's go fine with big lifts.
up2nogood wrote:Thanks DAS, reckon I'll fix the problem with the later model shaft.
With a cardan joint it should allow for a bit more drop anyway.
Cheers
up2nogood, I'm not having a go at you, but want to correct your terminology so that you dont confuse others, particularly when you ask for a cardan joint.
Cardan joint (named after one of the inventors) is a name used for a standard universal joint. A shaft with one of these at each end is a cardan shaft.
You seem to be mistaking a double cardan joint for a cardan joint.
John
I sit corrected! 
Named after Girolamo Cardano, credited with the invention of the device in 1545.
Although the first recorded manufacture of one was done by Robert Hookes in 1676.
And it was Henry Ford who gave us the term universal joint.
And I am, in fact, referring to a double cardan joint at the t-case end and a single cardan joint on the diff end of the front driveshaft.
Apologies for any confusion.
Named after Girolamo Cardano, credited with the invention of the device in 1545.
Although the first recorded manufacture of one was done by Robert Hookes in 1676.
And it was Henry Ford who gave us the term universal joint.
And I am, in fact, referring to a double cardan joint at the t-case end and a single cardan joint on the diff end of the front driveshaft.
Apologies for any confusion.
No these are the plastic ones, polyurethane I think, that sit on top of the spring between the spring and the top perch. I've only run these on the rear also. I've never run the retainers, these never came on the Disco and I didn't setup the shocks to dislocate the springs.
Cheers
Slunnie
Discovery TD5, Landy IIa V8 ute.
Slunnie
Discovery TD5, Landy IIa V8 ute.
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