Drivetrain Vibrations - Land Rovers Only

01001010 · 07-13-2006, 03:29 PM

Hey guys,

My 96 D1 has an old RotoFlex on it from a while back. Before, I would get vibes at like 50-65 mph. After I got the slightly larger MTs, the vibes kick in at around 70-75mph and go away right around 80 where the truck then becomes a cloud.

As of yesterday, I've been having low speed vibrations and squeeks. The squeeks are vehicle speed dependant, being a higher frequency of squeeks the faster I go until about 40 mph where the sound of the road is just too much to hear them and at 50mph the vibes go away. Then the vibration becomes a pulsating effect from 10-0mph, having the frequency of squeeks decrease right along with it.

Could this be something like the front U-joints needing grease or a definate sign of my rotoflex about to give for good!?!?!

Disco Mike · 07-13-2006, 03:59 PM

So, have you checked the u-joints, how often do you lube them, have you inspected the rotoflex and or changed it out. Think about dropping one drive shaft, lock your cdl and drive on one shaft, see if you still have the problem. I would suggest ther rear one first if your rotoflex is shot.
Mike

Muddy Oval · 07-13-2006, 04:10 PM

May be a silly question- but does it change if you hit the brakes?

01001010 · 07-13-2006, 04:17 PM

umm...I'd have to check but when im coasting to a stop I can still feel them...I dont think they change when I hit the brakes.

01001010 · 07-22-2006, 07:43 AM

So I greased up my front U-Joints and the one at the rear of the trans. The pulsating feel is gone and the low end vibes but my roto flex is REALLY banged up and now the vibes over 50 are a little worse than they used to be. This will QUICKLY be replaced with a new drive shaft with a U-joint to the rear diff.

Disco Mike · 07-22-2006, 08:04 AM

Quote:

Originally Posted by 01001010

So I greased up my front U-Joints and the one at the rear of the trans. The pulsating feel is gone and the low end vibes but my roto flex is REALLY banged up and now the vibes over 50 are a little worse than they used to be. This will QUICKLY be replaced with a new drive shaft with a U-joint to the rear diff.

Don't knock the old rotoflex, they doe a good job for what they were designed for and as long as you stay under a 3" lift a new rotoflex for $50ish is not a bad way to go. You might also throw some zerks on the slip shafts of both of your drive lines and lube them also, helps with the Klunks.
mike

drewclare25 · 07-22-2006, 10:07 AM

just outta curiosity..what year did they stop putting rotoflex in discos?

or did they ever stop?

Disco Mike · 07-22-2006, 10:52 AM

I have seen them in 02's.
Mike

RageRover · 07-22-2006, 02:27 PM

I have seen them as old as on my mom's 86' Benz 420 SEL. Same one as mine from what I could tell.

01001010 · 07-22-2006, 02:43 PM

there are some later model D1s (97s, 98s, 99s) with U-joints...could be a dependant on the trim level, maybe?

RageRover · 07-22-2006, 04:30 PM

I saw on the 70's RRC in the other thread "Is it worth it?", that the rear drive shaft had just U-Joints, no rubber rotoflex.

01001010 · 07-25-2006, 01:24 PM

Quote:

Originally Posted by Disco Mike

Don't knock the old rotoflex, they doe a good job for what they were designed for and as long as you stay under a 3" lift a new rotoflex for $50ish is not a bad way to go. You might also throw some zerks on the slip shafts of both of your drive lines and lube them also, helps with the Klunks.
mike

You're totally right man! And it might even be cheaper to keep the rotoflex because you can keep a spare in the truck! Ah man..lol...sometimes I just act without thinking.

disco12 · 07-25-2006, 05:01 PM

My truck has vibes at about 60-65 MPH I'm getting a new rotoflex until I can get enough money to do a u-joint conversion. For some strange reason my GF gets a kick out it when the Disco vibrates

01001010 · 09-16-2006, 03:37 PM

So I've changed my RotoFlex to a Genuine one from DAP. While doing the job, I went ahead and lubed everything that had a grease nipple on it. The low speed vibes have been gone for a while now. But ever since I changed the rotoflex, ive had really pulsating vibes between 65 and 75 mph.

When doing the job, I couldn't find a comfortable enough position in order to torque and read the wrench. Because of this, I tightened them more than I was suppose to. Could over-tightened bolts be the culprit to the pulsating?

SCSL · 09-16-2006, 03:53 PM

Quote:

Originally Posted by 01001010

You're totally right man! And it might even be cheaper to keep the rotoflex because you can keep a spare in the truck!

That's what I do. They are super quick to swap out. Much easier than trying to repair a U-Joint in the field. It's also pretty simple to see when they are damanged,,just a visual inspection.

However-- this can get expensive in the long run.

07-13-2006, 03:29 PM	#1 (permalink)
01001010 Moderator Join Date: Jan 2005 Location: Lawrenceville, GA Posts: 4,528 Gallery: 15	Drivetrain Hey guys, My 96 D1 has an old RotoFlex on it from a while back. Before, I would get vibes at like 50-65 mph. After I got the slightly larger MTs, the vibes kick in at around 70-75mph and go away right around 80 where the truck then becomes a cloud. As of yesterday, I've been having low speed vibrations and squeeks. The squeeks are vehicle speed dependant, being a higher frequency of squeeks the faster I go until about 40 mph where the sound of the road is just too much to hear them and at 50mph the vibes go away. Then the vibration becomes a pulsating effect from 10-0mph, having the frequency of squeeks decrease right along with it. Could this be something like the front U-joints needing grease or a definate sign of my rotoflex about to give for good!?!?! __________________ JC... 1996 Discovery SE - The Blue Marlin - gone =( 1965 Series IIa 109 RHD 2.25L Dsl - Wilks 1965 Series IIa 88' LHD 2.25L Petrol - Fionna Last edited by 01001010 : 11-02-2006 at 08:47 AM.

07-13-2006, 04:10 PM	#3 (permalink)
Muddy Oval Otherwise known as STEVE Join Date: Oct 2005 Location: Vermont Posts: 1,968 Gallery: 0	May be a silly question- but does it change if you hit the brakes? __________________ 2002 Freelander 2000 DII w/CDL 1967 SIIA 109SW Former Rovers 2004 Modded "S" Disco, R.I.P. 2004 G4 Disco 2002 Modded Freelander 1995 Modded Disco 1994 D-90 #8 1993 NAS D110 1990 Range Rover County 1973 SIII 88 1972 Range Rover 2 door

07-13-2006, 04:17 PM	#4 (permalink)
01001010 Moderator Join Date: Jan 2005 Location: Lawrenceville, GA Posts: 4,528 Gallery: 15	umm...I'd have to check but when im coasting to a stop I can still feel them...I dont think they change when I hit the brakes. __________________ JC... 1996 Discovery SE - The Blue Marlin - gone =( 1965 Series IIa 109 RHD 2.25L Dsl - Wilks 1965 Series IIa 88' LHD 2.25L Petrol - Fionna

07-22-2006, 07:43 AM	#5 (permalink)
01001010 Moderator Join Date: Jan 2005 Location: Lawrenceville, GA Posts: 4,528 Gallery: 15	So I greased up my front U-Joints and the one at the rear of the trans. The pulsating feel is gone and the low end vibes but my roto flex is REALLY banged up and now the vibes over 50 are a little worse than they used to be. This will QUICKLY be replaced with a new drive shaft with a U-joint to the rear diff. __________________ JC... 1996 Discovery SE - The Blue Marlin - gone =( 1965 Series IIa 109 RHD 2.25L Dsl - Wilks 1965 Series IIa 88' LHD 2.25L Petrol - Fionna

07-22-2006, 10:07 AM	#7 (permalink)
drewclare25 Senior Member Join Date: Jan 2005 Posts: 391 Gallery: 0	just outta curiosity..what year did they stop putting rotoflex in discos? or did they ever stop? __________________ Best 4x4xFar 97 Green D1 3" BB springs pro comp es9000 shocks 32x11.50 BFG Mud Terrains 15" american racing steel wheels flowmaster 40 series dual pipes mantec snorkel

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07-13-2006, 03:59 PM	#2 (permalink)
Disco Mike Moderator Join Date: Aug 2004 Location: Parker, Colorado Posts: 5,455 Gallery: 0	So, have you checked the u-joints, how often do you lube them, have you inspected the rotoflex and or changed it out. Think about dropping one drive shaft, lock your cdl and drive on one shaft, see if you still have the problem. I would suggest ther rear one first if your rotoflex is shot. Mike

07-22-2006, 10:52 AM	#8 (permalink)
Disco Mike Moderator Join Date: Aug 2004 Location: Parker, Colorado Posts: 5,455 Gallery: 0	I have seen them in 02's. Mike

07-22-2006, 02:27 PM	#9 (permalink)
RageRover Crazy about Rovers and more... Join Date: Dec 2005 Location: Westland, MI Posts: 2,889 Gallery: 0	I have seen them as old as on my mom's 86' Benz 420 SEL. Same one as mine from what I could tell. __________________ Pat Albaugh, Midwest Moderator "Diffage" -the point at which the truck's differential makes contact with the ground. http://www.cardomain.com/id/RageRover42Visit my RRC and others here!(updated as of September 15, 2006) 1995 RRC LWB -LT265/75R16 Pathfinder All Terrains -RTE 2" Lift Springs -Pro Comp ES9000 Shocks (from DAP Enterprises) -KMC Front Diff Guard -4 Desert Fox 55 watt Lighting -Radio Shack CB Radio (never know when signal fails on a cell phone) -2 Halogen Super Sport 100 watt forward lights -Custom slim style front bumper w/ integrated bull bar -Lowe's Special "Homemade" Snorkel -T-Case out of an 92' RRC

07-22-2006, 02:43 PM	#10 (permalink)
01001010 Moderator Join Date: Jan 2005 Location: Lawrenceville, GA Posts: 4,528 Gallery: 15	there are some later model D1s (97s, 98s, 99s) with U-joints...could be a dependant on the trim level, maybe? __________________ JC... 1996 Discovery SE - The Blue Marlin - gone =( 1965 Series IIa 109 RHD 2.25L Dsl - Wilks 1965 Series IIa 88' LHD 2.25L Petrol - Fionna

07-22-2006, 04:30 PM	#11 (permalink)
RageRover Crazy about Rovers and more... Join Date: Dec 2005 Location: Westland, MI Posts: 2,889 Gallery: 0	I saw on the 70's RRC in the other thread "Is it worth it?", that the rear drive shaft had just U-Joints, no rubber rotoflex. __________________ Pat Albaugh, Midwest Moderator "Diffage" -the point at which the truck's differential makes contact with the ground. http://www.cardomain.com/id/RageRover42Visit my RRC and others here!(updated as of September 15, 2006) 1995 RRC LWB -LT265/75R16 Pathfinder All Terrains -RTE 2" Lift Springs -Pro Comp ES9000 Shocks (from DAP Enterprises) -KMC Front Diff Guard -4 Desert Fox 55 watt Lighting -Radio Shack CB Radio (never know when signal fails on a cell phone) -2 Halogen Super Sport 100 watt forward lights -Custom slim style front bumper w/ integrated bull bar -Lowe's Special "Homemade" Snorkel -T-Case out of an 92' RRC

07-25-2006, 05:01 PM	#13 (permalink)
disco12 Majesticdisco1 Join Date: Mar 2006 Location: Union City California Posts: 1,207 Gallery: 0	My truck has vibes at about 60-65 MPH I'm getting a new rotoflex until I can get enough money to do a u-joint conversion. For some strange reason my GF gets a kick out it when the Disco vibrates __________________ 1996 D1 J "Crawler" camo,33x10.50's

09-16-2006, 03:37 PM	#14 (permalink)
01001010 Moderator Join Date: Jan 2005 Location: Lawrenceville, GA Posts: 4,528 Gallery: 15	So I've changed my RotoFlex to a Genuine one from DAP. While doing the job, I went ahead and lubed everything that had a grease nipple on it. The low speed vibes have been gone for a while now. But ever since I changed the rotoflex, ive had really pulsating vibes between 65 and 75 mph. When doing the job, I couldn't find a comfortable enough position in order to torque and read the wrench. Because of this, I tightened them more than I was suppose to. Could over-tightened bolts be the culprit to the pulsating? __________________ JC... 1996 Discovery SE - The Blue Marlin - gone =( 1965 Series IIa 109 RHD 2.25L Dsl - Wilks 1965 Series IIa 88' LHD 2.25L Petrol - Fionna

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