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Degree shims


 
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tomynoks
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Joined: 11 Apr 2006
Location: Mesa, AZ

PostPosted: Wed Sep 13, 2006 10:05 am    Post subject: Degree shims Reply with quote

lifted my XJ w/ RE6030 3.5" kit. I did the T-case drop with 1x2 (3/4"x1.5") steel tube per a write-up posted here. I think I'll add another 1/4" as it didn't entirely get rid of the vibration. I think adding degree shims would help straighten out the drive line angle as well. Does anyone have any idea what degree shim I should try??
_________________
'99 XJ Sport
AirAid Intake
PowerAid Throttle body spacer
RE6030 3.5"
1" T-case drop
31x10.5x15 BFG AT KO's
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Code3TJ
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Joined: 01 Jan 2004
Location: Uzbekistan

PostPosted: Wed Sep 13, 2006 12:22 pm    Post subject: Reply with quote

Have you measured approximately how many degrees off it is right now?
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tomynoks
Member


Joined: 11 Apr 2006
Location: Mesa, AZ

PostPosted: Wed Sep 13, 2006 5:25 pm    Post subject: Reply with quote

Nope. How do I do that??
_________________
'99 XJ Sport
AirAid Intake
PowerAid Throttle body spacer
RE6030 3.5"
1" T-case drop
31x10.5x15 BFG AT KO's
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Code3TJ
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Joined: 01 Jan 2004
Location: Uzbekistan

PostPosted: Thu Sep 14, 2006 9:15 am    Post subject: Reply with quote

http://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtml
About halfway down the page.
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tomynoks
Member


Joined: 11 Apr 2006
Location: Mesa, AZ

PostPosted: Thu Sep 14, 2006 2:47 pm    Post subject: Reply with quote

I get "Page cannot be displayed" Even the main page... weird.. have you checked it lately??

Thank for your help. The manager at 4Wheelparts said I shouldn't need degree shims and that even on his RE 4.5" lift he just lowered the T-case 3/4". I might need new u-joints or wheel bearings... I might just have them do their $59.00 maintenance check and see what's up. Are you really in Uzbekistan?
_________________
'99 XJ Sport
AirAid Intake
PowerAid Throttle body spacer
RE6030 3.5"
1" T-case drop
31x10.5x15 BFG AT KO's
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JtotheEEPxj
Member


Joined: 01 Nov 2005
Location: Antelope, CA

PostPosted: Tue Sep 19, 2006 8:34 am    Post subject: Reply with quote

I'm running 4.5" of lift on my 93 XJ, and I'm using a 4 degree angle shim.
If you can find a 3 degree, that would probably work best, but make sure your angle sits a bit negative, cause when you're taking off/ torqueing the
motor, it always goes up, especially on a lifted XJ. They're known for dropping U joints/twisting the rear axle when the angles are off.
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"If it ain't dented, ya ain't wheelin' hard enough"
-1993 XJ, 4.0, 5 spd, 4.5" lift, 32's, Warn bumper, JKS link kit, skid plates, D30 & 8.25 w/ 4:56's & Detroit locker
-1965 Ranchero, new paint & interior, 302, C4, torque thrust II whls
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mattyj074
Member


Joined: 08 Mar 2006
Location: Lake Elsinore CA

PostPosted: Tue Sep 19, 2006 9:49 am    Post subject: Reply with quote

just make sure that you shiming the axle for the correct type of drive shaft you have.
With a stock drive shaft and slip yoke, you need to try and get the pinion angle & transfer output shaft as close to parralel as possible,( actually a couple of degrees low on the pinion, to compensate for axle/spring wrap on exceleration).
I see quite a few people shiming up there pinion angle to match the drive shaft angle with a stock shaft....this will not work.
You only match the shaft angle when you use a CV or double cardan drive shaft.

I have a 4.5 lift and tried a transfer drop & shims, it was better, but once i commited and did the SYE & CV shaft, i realized how much vibration i still had. Now its super smooth, no vibration at all & peace of mind that i shouldnt have shaft failure on the trail.
_________________
98 XJ Sport
RE6130 Kit
32" Super Swampers
Currie SYE,CV shaft
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tomynoks
Member


Joined: 11 Apr 2006
Location: Mesa, AZ

PostPosted: Tue Sep 19, 2006 10:37 pm    Post subject: Reply with quote

Thanks for the help guys! I dropped T-case to 1" and have very little vibration now except between 30 and 40 mph there a slight vibe. I will eventually get the SYE and CV Driveshaft. Do you know of any place that'll discount prices? Also, a mechanic friend said I needed to raise my pinion in relation to the driveshaft and try to match that angle.... but like you said the pinion and slip yoke should be parallel..I got the same advice from the manager at 4Wheel Parts here in Phoenix.

Thanks again!!
_________________
'99 XJ Sport
AirAid Intake
PowerAid Throttle body spacer
RE6030 3.5"
1" T-case drop
31x10.5x15 BFG AT KO's
Back to top
View user's profile Send private message Send e-mail AIM Address
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