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Unread 03-30-2014, 08:24 AM   #1
dvsyj
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still needing tc drop after sye and other sye questions

Hi all thanks for any help you can give...I got a 92 yj with a 4" re lift and .5" boom shackles and 1" mml...just installed aa sye and tw shaft... Set pinion with 8 shims as that's the largest I could find and were recommended, I got my pinion 2 below shaft angle and it drives great...but I had to leave a 1" tc drop in...if I removed it my angles were too much..just wondering if anyone has heard or had that issue.. I was really hoping to get rid of that dang tc drop..could it be my springs need to still settle in and I could possibly remove it in time or my tires being 31s be too small..I think a larger tire would raise diff up a bit maybe? Another thing I know cutting and rewelding perches is most advised but not a possibility at the moment...another question is now my diff has quite an angle on it from the shims, would it be good to get an aftermarket diff cover to give it a little more fluid capacity, I really don't want blow my pinion bearings from lack of gear oil...thanks for any advice ahead of time

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Unread 03-30-2014, 08:59 AM   #2
bpounds
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You didn't mention a problem with vibrations. Did you have that? Or do you just not like the angles? Proof is in the pudding.

Tire diameter has nothing to do with driveline angles.
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Unread 03-30-2014, 09:01 AM   #3
dvsyj
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No vibes at all, all is perfect, just HAVE to keep the tc drop in.. If I remove it the angles would be too much at the differential...
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Unread 03-30-2014, 09:07 AM   #4
Anticanman
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Why would it be too much at the differential? I don't get it
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Unread 03-30-2014, 09:09 AM   #5
bpounds
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Quote:
Originally Posted by dvsyj View Post
No vibes at all, all is perfect, just HAVE to keep the tc drop in.. If I remove it the angles would be too much at the differential...
Quote:
Originally Posted by Anticanman View Post
Why would it be too much at the differential? I don't get it
Exactly. I think you're hung up on specific angles, instead of the results. The driveline angles are going to be different on each truck.

Take the drop out and go for a drive.
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Unread 03-30-2014, 09:14 AM   #6
dvsyj
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Alright will do...what I met by the angle at the diff was the angle would have been more than 2...I'll take it out and see how it is...I guess I was hung up on the angles on paper, so to say
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Unread 03-30-2014, 09:20 AM   #7
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mine is sitting at 4* below pinion and I can comfortably drive 45, any more and the vibes are getting me. I have a MML on the way. that's 20.5*pinion and 24.5* driveshaft. I messed up when putting on perches
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Unread 03-30-2014, 12:13 PM   #8
dvsyj
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OK took out the tc drop and I'm at 15 pinion and 23 driveshaft...get the vibes pretty good at about 40 mph...guess I'm stuck with the drop then right? At least til I might be able to get the rear perches rewelded then right..

Any input on using a higher filling differential cover to keep the pinion bearings lubed? Thanks again guys
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Unread 03-30-2014, 12:21 PM   #9
bpounds
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Was hoping that would not be the result.

Would be interested in seeing a side view pic of your rear driveline.

Can't help on the lube level.
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Unread 03-30-2014, 12:42 PM   #10
dvsyj
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Its not letting me post pics from my phone... Let me go inside..
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Unread 03-30-2014, 01:16 PM   #11
dvsyj
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This is with the tc drop pinion at 15* shaft at 17*img_20140323_200144-2.jpg
this is without tc drop pinion still at 15* shaft at 23*. it dosent look so bad in the pic, ill try and get anotherimg_20140330_113752-2.jpg
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Unread 03-30-2014, 01:26 PM   #12
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I don't know what to say. They both look good to my eye.
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Unread 03-30-2014, 01:30 PM   #13
dvsyj
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heres another shot without tc drop..img_20140330_122603.jpg

ya it dosent look as bad from the pics, but its noticeably off just looking at it...like 8* off an the angle finder.. no worries ill just use the drop for now and i appreciate you taking the time to look...

Last edited by dvsyj; 03-30-2014 at 01:45 PM.. Reason: upload image
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Unread 03-30-2014, 01:49 PM   #14
dvsyj
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stupid tc drop sorry
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Unread 03-31-2014, 02:15 AM   #15
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So without the drop is the pinion pointing above the transfer case output? Without the drop you might try shims with less degrees to bring the pinion down some.
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