Pinion angle/ shims
05-08-2012, 07:36 PM
#11
At static ride height, I had 0*. Besides knowing that 0* is not good for u-joints, on a launch or when accelerating hard, pinion angle would go positive, and I'd get launch shudder or vibration, depending on speed. The 4* shim gave me a -4* driveline angle, and now there is never any vibration.
05-08-2012, 08:00 PM
#13
Ok all this " Setup" discussion makes me have to ask, What is the best way to set up the pinion angle???
I have purchased 6* shims, not sure which way to face them.
I have a degree finder, how and where do i exactley use it? Im not sure but would love to know the correct way to figure this out. Thanks Bretheren !
I have purchased 6* shims, not sure which way to face them.
I have a degree finder, how and where do i exactley use it? Im not sure but would love to know the correct way to figure this out. Thanks Bretheren !
05-08-2012, 10:25 PM
#14
TECH Enthusiast
iTrader: (3)
Join Date: Jul 2009
Location: Monticello,MS
Posts: 640
Likes: 0
Received 0 Likes
on
0 Posts
Iv been battling pinion angle my self and over the past week I think I have it down now.ha
1st check your drive shaft angle. In my case I have a 2 peice drive shaft and I measure the rear one. for instance I got +1* meaning that the rear part of the drive shaft was facing upward.
2cd get the yoke from the differential to where the caps are facing up and down, then get a 13/16 socket( this is what I used) and put it flush against the u joint end. in my instance it read -4 meanding the differential was pointing downward slightly.
lastly take you 2 measurements and add them for your pinion angle.(-4*+1*) equal -3*
1st check your drive shaft angle. In my case I have a 2 peice drive shaft and I measure the rear one. for instance I got +1* meaning that the rear part of the drive shaft was facing upward.
2cd get the yoke from the differential to where the caps are facing up and down, then get a 13/16 socket( this is what I used) and put it flush against the u joint end. in my instance it read -4 meanding the differential was pointing downward slightly.
lastly take you 2 measurements and add them for your pinion angle.(-4*+1*) equal -3*
06-08-2012, 01:42 AM
#15
formerly TheRawdoh1 (2013-08-16)
Join Date: Jun 2012
Location: Los Angeles, CA
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
I am having the same symptoms right now and it's been driving me crazy.
I just got a 3/6 drop and the vibrations are really bad.
My rear end is facing upward and driveshaft leveled. No signs of wear and tear. How can I find out my angle or shims I need ?
I just got a 3/6 drop and the vibrations are really bad.
My rear end is facing upward and driveshaft leveled. No signs of wear and tear. How can I find out my angle or shims I need ?
06-08-2012, 07:14 AM
#16
Tim, make sure your truck is parked on level ground and at ride height when you do this. I always use a flat spot on the diff housing to figure from but it's "proper" to use a flat on a yoke since you know it's gonna be perpendicular to the pinion gear and will give you true pinion angle, but I've always gotten it right my way too.
If you have none or positive pinion angle, the fat side of the shim goes to the front. If you're too negative, it goes toward the rear. I always replace the leaf spring pin with a longer one if I go over about a 3* shim to make damn sure the rear stays located. I had to run 6's in my old truck dropped 4/5.
If you have none or positive pinion angle, the fat side of the shim goes to the front. If you're too negative, it goes toward the rear. I always replace the leaf spring pin with a longer one if I go over about a 3* shim to make damn sure the rear stays located. I had to run 6's in my old truck dropped 4/5.
Thread
Thread Starter
Forum
Replies
Last Post
Tigger Welder
INTERNAL ENGINE MODIFICATIONS
14
10-01-2015 08:41 AM
