Unlimited04's LJ Build - Page 11 - JeepForum.com

 1Likes
Reply
 
LinkBack Thread Tools
post #151 of 711 Old 10-03-2009, 09:26 PM Thread Starter
Unlimited04
This post/info=my opinion
 
Unlimited04's Avatar
2004 LJ Wrangler 
 
Join Date: Dec 2005
Location: Colorado
Posts: 24,172
Quote:
Originally Posted by spyder6 View Post
i cant believe that such a minor adjustment in caster made such a big difference. i might roll my front end back a little bit.

theoretically, if there isnt any input torque on the driveshaft - i wont get any vibes right?
Well stock is 7* caster, at least according to Firestone's computer it is, so the closer you can get to that the better, but gotta remember pinion angle.

and you can still get vibes (and u-joint destruction) from a driveshaft even if there is no torque input. It all depends where the u-joints bind, torque just makes it worse. The single cardan u-joint style is pretty bad when it comes to angle of operation. The more bend in the single cardan shaft the more friction in the system, and the larger the difference in the rotation speeds between the driven and drive side....it isn't true constant velocity.

Unlimited04 is offline  
Sponsored Links
Advertisement
 
post #152 of 711 Old 10-03-2009, 09:30 PM
spyder6
Got that Toyota chit
 
spyder6's Avatar
2010  
 
Join Date: Feb 2006
Location: Louisville, KY
Posts: 12,037
i thought TJ's front driveshafts were double cardan from the factory? i know mines got 3 u-joints in it

2010 Magnetic Toyota 4Runner Trail Teams

My builds: Bruiser and The Grey

|Forge Overland| or follow us on Facebook
spyder6 is offline  
post #153 of 711 Old 10-03-2009, 09:31 PM Thread Starter
Unlimited04
This post/info=my opinion
 
Unlimited04's Avatar
2004 LJ Wrangler 
 
Join Date: Dec 2005
Location: Colorado
Posts: 24,172
Quote:
Originally Posted by spyder6 View Post
i thought TJ's front driveshafts were double cardan from the factory? i know mines got 3 u-joints in it
yea double cardan on the t-case side, single cardan on the pinion side. vibes will most likely come from the pinion side when correcting caster with a lift. I suppose you could even bind the DC side of the front shaft if you're pointing the rear down a lot for a tall lift.
Unlimited04 is offline  
post #154 of 711 Old 10-03-2009, 09:42 PM Thread Starter
Unlimited04
This post/info=my opinion
 
Unlimited04's Avatar
2004 LJ Wrangler 
 
Join Date: Dec 2005
Location: Colorado
Posts: 24,172
Unlimited04 is offline  
post #155 of 711 Old 10-03-2009, 09:45 PM
glockster
Registered User
1997 TJ Wrangler 
 
Join Date: Oct 2006
Location: chino
Posts: 2,113
my latest alignment numbers:

camber - .07 (left) .07 (right)
x camber 0.0

caster - 5.9 (left) 6.9 (right)
x caster 1.0

toe - 0.15 (left) 0.15 (right
total toe - 0.30

Here is the response to the question I posed about pinion angles and caster from flatlanded757 in his end all alignment thread:

"Caster is more important than pinion angle. Unless you are getting vibrations from your front driveshaft don't even mess with it, you're gaining nothing.

As for the 1 degree difference, a lot of vehicles actually specify that, higher caster on the right side isn't bad unless it's WAY out. Go back to the section explaining "road crown." You probably don't experience pulling because of that, they are basically cancelling each other out.

Your Jeep is fine. Enjoy it."

Phone calls confirmed this sentiment was shared by Tom Woods, Rubicon Express and the shop that did the alignment. As the FSM states, Pinion angle trumps Caster on a stock jeep. Set the caster and the pinion angle is what it is. I have run up to 90 mph without a vibe anywhere. I'll check pinion angles just so I can post a number. I ain't changing it. I'm happy. Just my .02 cents worth.

Last edited by glockster; 10-03-2009 at 10:09 PM.
glockster is offline  
post #156 of 711 Old 10-03-2009, 09:49 PM
spyder6
Got that Toyota chit
 
spyder6's Avatar
2010  
 
Join Date: Feb 2006
Location: Louisville, KY
Posts: 12,037
incredible. Spicer was an idiot?

friday is going to be a long day

2010 Magnetic Toyota 4Runner Trail Teams

My builds: Bruiser and The Grey

|Forge Overland| or follow us on Facebook
spyder6 is offline  
post #157 of 711 Old 10-03-2009, 10:22 PM
glockster
Registered User
1997 TJ Wrangler 
 
Join Date: Oct 2006
Location: chino
Posts: 2,113
hmm....I didn't call anybody an idiot. Merely stated what was working for my Jeep.

What's friday got to do with anything?
glockster is offline  
post #158 of 711 Old 10-03-2009, 11:05 PM
spyder6
Got that Toyota chit
 
spyder6's Avatar
2010  
 
Join Date: Feb 2006
Location: Louisville, KY
Posts: 12,037
Quote:
Originally Posted by glockster View Post
hmm....I didn't call anybody an idiot. Merely stated what was working for my Jeep.

What's friday got to do with anything?
i was talking to Unlimited. friday is the day im going to roll my front axle back. that is if i have time after putting my beadlocks together

2010 Magnetic Toyota 4Runner Trail Teams

My builds: Bruiser and The Grey

|Forge Overland| or follow us on Facebook
spyder6 is offline  
post #159 of 711 Old 10-03-2009, 11:28 PM
glockster
Registered User
1997 TJ Wrangler 
 
Join Date: Oct 2006
Location: chino
Posts: 2,113
ahhh.......gotcha.

What is it your not happy with? vibes?
glockster is offline  
post #160 of 711 Old 10-04-2009, 06:12 AM Thread Starter
Unlimited04
This post/info=my opinion
 
Unlimited04's Avatar
2004 LJ Wrangler 
 
Join Date: Dec 2005
Location: Colorado
Posts: 24,172
Quote:
Originally Posted by glockster View Post
ahhh.......gotcha.

What is it your not happy with? vibes?
I think he's worried about getting vibes from the front driveshaft by putting too much caster in since he's got such a tall lift. Spyder, post pics of the pinion angle - will be interesting to the result vs caster. It will definitely drive better

Side note - on a trip to Rokmen in south denver with a friend, We saw a guy in SWB TJ w/ what looked like 4.5-5.5" springs on a SA RE lift, with 35s. He was so squirrely it was ridiculous, wandering all over in the ruts in the road...looked like he was wrestling an alligator in the drivers seat. I couldn't deal with that....
Unlimited04 is offline  
post #161 of 711 Old 10-07-2009, 08:13 AM Thread Starter
Unlimited04
This post/info=my opinion
 
Unlimited04's Avatar
2004 LJ Wrangler 
 
Join Date: Dec 2005
Location: Colorado
Posts: 24,172
Unlimited04 is offline  
post #162 of 711 Old 10-15-2009, 07:21 PM Thread Starter
Unlimited04
This post/info=my opinion
 
Unlimited04's Avatar
2004 LJ Wrangler 
 
Join Date: Dec 2005
Location: Colorado
Posts: 24,172
Update!

Quick Disconnect Stow-Away Cams

So when I drilled and tapped my frame for the JKS disconnect attachments, I didn't measure anything I just kinda marked it with a sharpie, eyeballed and started drilling in my haste. Well they were not lined up on each side and were just a massive pain to force into place for off-roading. So I invented some cam bolts basically to fix the issue. I figured the arc of both sides has to intersect someplace!! So, a little bit of time in front of the Bridgeport and bingo the result is awesome. I dialed in both sides, now I can effortlessly disconnect, stow, and then reconnect the sway bar. No spitting grease out the bushing, no grunting, no cussing, they slide on and off stupid easy. Why didn't JKS think of this!?



They're basically a 1/2" thick billet of aluminum about 0.65" wide and 1.2" long with two holes in it. One hole is tapped for 5/16-18 UNC, and one is a thru hole. Very simple to make. I used a Bridgeport mill, but all you really need is a hand saw to cut the pieces, a vise to hold them, a 5/16-18 tap, a power drill, and most importantly Q and F size drill bits. The Q is the oversize free fit bit for one hole, the F size is the tap drill bit for the other. I countersunk the thru hole for a stainless socket head cap screw, but you could use a button head or hex head for clearance, or just make the cams bigger. The stub is held on by the bolt included by JKS.

Spin both sides till the discos fit perfectly, tighten when done.


With the sway bar disco'ed:




This is one of those simple things that makes life a little bit easier
Unlimited04 is offline  
post #163 of 711 Old 10-17-2009, 03:11 PM Thread Starter
Unlimited04
This post/info=my opinion
 
Unlimited04's Avatar
2004 LJ Wrangler 
 
Join Date: Dec 2005
Location: Colorado
Posts: 24,172
went to the junkyard today....

$40-
XJ front spring retainer clips
ZJ V8 tie-rod from a 5.9L
XJ roof rack

Found a HP D30, but it was ABS and non-UpCountry, so it had 3.55s or worse. Decided to wait until I find a 96-99 HP D30 w/ 3.73s & no ABS. All the other XJ's were 00-01, LP's. Got a set of sagging XJ leaf springs from "COLOUXJ", hope to make a camping/off-road trailer out of those some day.

What a shame on CFC - so many XJ's and ZJ's in pristine condition - the ZJ I pulled the tie-rod from was a 5.9L Most of the seats in vehicles were still in great condition. Its gangbusters at the junkyards, they're loving it.
Unlimited04 is offline  
post #164 of 711 Old 10-17-2009, 03:38 PM
Jebussaves0
Registered User
2002 TJ Wrangler 
 
Join Date: Apr 2008
Location: Abilene, TX
Posts: 411
Quote:
Originally Posted by Unlimited04 View Post
Update!

Quick Disconnect Stow-Away Cams

So when I drilled and tapped my frame for the JKS disconnect attachments, I didn't measure anything I just kinda marked it with a sharpie, eyeballed and started drilling in my haste. Well they were not lined up on each side and were just a massive pain to force into place for off-roading. So I invented some cam bolts basically to fix the issue. I figured the arc of both sides has to intersect someplace!! So, a little bit of time in front of the Bridgeport and bingo the result is awesome. I dialed in both sides, now I can effortlessly disconnect, stow, and then reconnect the sway bar. No spitting grease out the bushing, no grunting, no cussing, they slide on and off stupid easy. Why didn't JKS think of this!?



They're basically a 1/2" thick billet of aluminum about 0.65" wide and 1.2" long with two holes in it. One hole is tapped for 5/16-18 UNC, and one is a thru hole. Very simple to make. I used a Bridgeport mill, but all you really need is a hand saw to cut the pieces, a vise to hold them, a 5/16-18 tap, a power drill, and most importantly Q and F size drill bits. The Q is the oversize free fit bit for one hole, the F size is the tap drill bit for the other. I countersunk the thru hole for a stainless socket head cap screw, but you could use a button head or hex head for clearance, or just make the cams bigger. The stub is held on by the bolt included by JKS.

Spin both sides till the discos fit perfectly, tighten when done.


With the sway bar disco'ed:




This is one of those simple things that makes life a little bit easier
That's bloody brilliant! I've been having this same issue with my JKS storage pines... definitely added this to the list!

2002 Jeep Wrangler Sahara | 4.0L 5spd D44/D30 3.73s | Hurst Shifter | Hardwired Power Inverter | Hummer-Style CAI | 1" Rusty's BL/MML | AA TC Shifter Bracket | 2" BB | JKS Quicker Discos | 33x10.50R15 BFG KM2s | Alpine CDA-9886 HU | OTRATTW Switch Panel | G.P.F. Rear Bumper | Metalcloak Overline Fenders

M416 Trailer | In Progress
Jebussaves0 is offline  
post #165 of 711 Old 10-17-2009, 03:39 PM
LJameson
Registered User
1990 YJ Wrangler 
 
Join Date: Jun 2008
Location: Central Oregon!
Posts: 3,830
Quote:
Originally Posted by Unlimited04 View Post
went to the junkyard today....

$40-
XJ front spring retainer clips
ZJ V8 tie-rod from a 5.9L
XJ roof rack

Found a HP D30, but it was ABS and non-UpCountry, so it had 3.55s or worse. Decided to wait until I find a 96-99 HP D30 w/ 3.73s & no ABS. All the other XJ's were 00-01, LP's. Got a set of sagging XJ leaf springs from "COLOUXJ", hope to make a camping/off-road trailer out of those some day.

What a shame on CFC - so many XJ's and ZJ's in pristine condition - the ZJ I pulled the tie-rod from was a 5.9L Most of the seats in vehicles were still in great condition. Its gangbusters at the junkyards, they're loving
it.
tell me about it. I just went last weekend to get some interior parts for my xj. There was 7 WJs there, all in perfect shape. And a 2001 green 2 door XJ that still had the battery in it, 60k miles. The interior didn't even looke touched, it was sad. I plan on going tomorrow to get a ZJ tie rod and shift handle. Sounds silly, but it looks and feels nicer then the Tj one and it's a direct fit

1990 YJ-The wheeler
2015 JK- The DD
LJameson is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
My YJ Build - Yet another build thread!! bluexj YJ Wrangler Technical Forum 28 07-11-2012 12:23 PM
06flex's build (my build up) 06flex TJ Wrangler Technical Forum 131 07-03-2010 10:26 PM
Build advice for a high-line type build The Rat YJ Wrangler Technical Forum 1 02-11-2009 02:21 PM
how would you build it? dharmabum TJ Wrangler Technical Forum 4 07-27-2006 11:05 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome