Pinion Angle Question.

[LRDONE]

I forgot but I'm thinking the rear pinion was 4-5 degrees mismatched with the T case. It chewed up a new flex joint in 100 miles.

Got the UJ conversation DS and rear flange from luck8llc. If you rear my post near the end has this information better written.

The spacers are 10mm thick 12mm would have probably been best but 10mm got me to about 1.0-1.5 degrees difference and was silent enough it's staying that way.

I also had to add 1" of blocks underneath my RR spring to get truck leveled. This also pushed my rear/lift up higher ~1/2".. Are you level with these springs, or does it still have "the rover lean"???

I think 1.5 degrees is fine because I think the u-joint needs a tiny bit of angle to be happy. like 1 degree lol. My truck doesn't really lean but I had to install lower shock mounts because I broke a new shock first time out with it.

 

[kris812]

I think 1.5 degrees is fine because I think the u-joint needs a tiny bit of angle to be happy. like 1 degree lol. My truck doesn't really lean but I had to install lower shock mounts because I broke a new shock first time out with it.

Correct at dead 0 the UJ needles never turn and self lubricant..

Mine leaned BAD even with spacer I think it's back to leaning.

I have the +50mm shocks and haven't snapped anything yet, fingers crossed... Do you have these longer shocks as well??

 

[LRDONE]

Correct at dead 0 the UJ needles never turn and self lubricant..

Mine leaned BAD even with spacer I think it's back to leaning.

I have the +50mm shocks and haven't snapped anything yet, fingers crossed... Do you have these longer shocks as well??

The kit I bought, they provided me with shocks that were rated for stock height or up to 2 inches of suspension lift. Well, just like you, because I don't have any extra weight on the the truck it lifted more than 2 inches. I have a thread on here explaining it. It broke at the top of the shock. They replaced both rears under warranty surprisingly. I didn't even ask. But anyway. since I was using those shocks again I bought all the mounts to lower everything. Now once I get all the driveline under control and sorted I can get back to beating everything up and replacing stuff that breaks lol.

My question with the swivel housings being re drilled for 3 degrees of caster, this wont change my pinion angle. I think I am going to have to get my pinion angle dropped a bit to line up with the drive shaft. Maybe I can get away with those 2 degree bushings instead of 600 dollars worth of gold arms lol.

 

[kris812]

DISCOVERY CASTER CORRECTION ARMS KIT FRONT + REAR TERRAFIRMA TF508 TF509 D1/DEF | eBay

TERRAFIRMA CASTOR CORRECTION ARMS KIT FRONT AND REAR COMPLETE WITH TERRAFIRMA BUSHES. FRONT ARMS TF508 3 DEGREE AND TERRFIRMA TF509 REAR CRANKED TRAILING ARMS. When coil sprung Land Rovers are lifted the caster angle is changed. The effect can be vagueness and a lack of self-centering of the...

www.ebay.com

I ordered these. 730$ for the front and rear arms, with all poly bushings. They shipped via ebay shipping partners, had them in ~10 days to AZ, USA. Not sure if they still ship to USA though after looking at the advertisement.

As many have said, there are better/stronger arms than TF sells. I didn't know any better and got these. Still holding up fine IMO but the gold flakes off easy.

 

[LRDONE]

DISCOVERY CASTER CORRECTION ARMS KIT FRONT + REAR TERRAFIRMA TF508 TF509 D1/DEF | eBay

TERRAFIRMA CASTOR CORRECTION ARMS KIT FRONT AND REAR COMPLETE WITH TERRAFIRMA BUSHES. FRONT ARMS TF508 3 DEGREE AND TERRFIRMA TF509 REAR CRANKED TRAILING ARMS. When coil sprung Land Rovers are lifted the caster angle is changed. The effect can be vagueness and a lack of self-centering of the...

www.ebay.com

I ordered these. 730$ for the front and rear arms, with all poly bushings. They shipped via ebay shipping partners, had them in ~10 days to AZ, USA. Not sure if they still ship to USA though after looking at the advertisement.

As many have said, there are better/stronger arms than TF sells. I didn't know any better and got these. Still holding up fine IMO but the gold flakes off easy.

Adrenaline 4x4 makes some I have been looking at. I'm not sure of their quality. I've only lightly started looking. Honestly I'm going to measure tonight but i'm hoping I can get away with the 2 degree bushings. For the back, I'm wondering if I can just shim them.

 

[lunchbox]

I’ve had Adrenaline 4x4 products in the past. They are very well made. I had the adjustable A Arm. It was dead sexy. I just didn’t need it anymore since I lowered the truck.

And castor corrected swivels do not help with driveline angles or help fix the OP problem.

 

[p m]

And castor corrected swivels do not help with driveline angles or help fix the OP problem.

... unless the OP incurred driveline issues by trying to correct caster issues by tweaked arms or bushings.

 

[rover rob]

This is why I like the re-drilled swivel housings as a method to restore caster angle without affecting driveline much.

i have a front assembly set up with 6 degree drilled balls . i bought a bunch of parts off a guy in vermont who tossed that in . his truck was lifted 5 or 6 inches .

 

[discostew]

On my 98 D1, What is the best way to change the front pinion angle? I have a 2 inch lift which I know everyone is going to say the pinion angle shouldn't be affected but I measured it last night.. I put an electronic angle finder on the front drive shaft and zero'd it. I then placed in on the flat spot on the bottom of the front diff and it read 8.9 degrees.. The diff looks like it's pointing up. Rear diff was also measured, with the angle finder zero'd on the rear drive shaft, the rear diff is pointing down about 4 degrees. Am I measuring this correctly? Or is the angle measurement supposed to be the difference between the center diff and front or rear diff? Thanks.

When you measure drive line angle you’re measuring the difference between the prop shaft and the yoke.
You’re basically measuring right at the u joint. If there’s 2 degree difference it could start vibrating.