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post #1051 of 1924 Old 08-21-2013, 05:17 PM Thread Starter
dayriesw
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10* off







I think the rotation will help out to clear the problem. I might have to cut a bit into the gusset on the new tb depending on how far I can rotate it.


06 WK 5.7 Hemi Overland
87 MJ Chief 57k original miles... getting built in the backyard.
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post #1052 of 1924 Old 08-21-2013, 06:38 PM
Hendrix
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Quote:
Originally Posted by dayriesw View Post
10* off







I think the rotation will help out to clear the problem. I might have to cut a bit into the gusset on the new tb depending on how far I can rotate it.
So, the 10* is with the magnetic angle finder on the casting hole on either side of the front diffcover? The flat spot has a hole about the size of a nickel or quarter.
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post #1053 of 1924 Old 08-22-2013, 05:57 AM
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Quote:
Originally Posted by Hendrix View Post
So, the 10* is with the magnetic angle finder on the casting hole on either side of the front diffcover? The flat spot has a hole about the size of a nickel or quarter.
Yes, one of those spots.....

Was I really being that unclear?

The whole point of measuring from one of those points is because they are perpendicular to the pinion center line. Throw the angle finder on that and report back.

OlllllllO
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post #1054 of 1924 Old 08-22-2013, 07:12 AM Thread Starter
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Quote:
Originally Posted by Imped View Post
Yes, one of those spots.....

Was I really being that unclear?

The whole point of measuring from one of those points is because they are perpendicular to the pinion center line. Throw the angle finder on that and report back.
I did this morning and it is 10* off also. You probably were not being that unclear, I just have had a long week.

06 WK 5.7 Hemi Overland
87 MJ Chief 57k original miles... getting built in the backyard.
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post #1055 of 1924 Old 08-22-2013, 12:56 PM
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Now put it on the tube of your driveshaft and see what angle you get.
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post #1056 of 1924 Old 08-22-2013, 01:18 PM
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So the flat spot is 10* off from vertical? If so, you're running 2* of caster.

Bring it down 4* so that it reads 6*. You'll then have 6* of caster (12-6 = 6) and the diff cover should clear the JJ much nicer.

Once doing that, is there enough adjustment left in the uppers to give you those same numbers with the lowers threaded in all the way? If so, do it. You should be in much better shape.

The easiest way to rotate the pinion down--unbolt both uppers, loosen the track bar jam nut, place a jack under the tie rod (you have Currie right? If so, it can handle it easily), and jack up until the angle finder reads the advised amount. Adjust uppers to fit, slide the bolts through and torque them down.

Just to clear things up--there are 12 degrees of separation between the pinion and caster planes on LP TJ axles.

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post #1057 of 1924 Old 08-22-2013, 02:51 PM
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Told you Imped knew the degrees of separation.
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post #1058 of 1924 Old 08-22-2013, 02:59 PM Thread Starter
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Quote:
Originally Posted by LA-Sahara View Post
Now put it on the tube of your driveshaft and see what angle you get.
-5*

Quote:
Originally Posted by Imped View Post
So the flat spot is 10* off from vertical? If so, you're running 2* of caster.

Bring it down 4* so that it reads 6*. You'll then have 6* of caster (12-6 = 6) and the diff cover should clear the JJ much nicer.

Once doing that, is there enough adjustment left in the uppers to give you those same numbers with the lowers threaded in all the way? If so, do it. You should be in much better shape.

The easiest way to rotate the pinion down--unbolt both uppers, loosen the track bar jam nut, place a jack under the tie rod (you have Currie right? If so, it can handle it easily), and jack up until the angle finder reads the advised amount. Adjust uppers to fit, slide the bolts through and torque them down.

Just to clear things up--there are 12 degrees of separation between the pinion and caster planes on LP TJ axles.
Perfect. Thanks, this makes a lot more sense.

Quote:
Originally Posted by LA-Sahara View Post
Told you Imped knew the degrees of separation.
No doubt there. Will report back after I do some work. Are you going with Rudy this weekend for the day ride at SI?

06 WK 5.7 Hemi Overland
87 MJ Chief 57k original miles... getting built in the backyard.
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post #1059 of 1924 Old 08-22-2013, 03:18 PM
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I can't imagine your steering has been anything to write home about with close to no caster.....your Jeep is gonna drive a hell of a lot nicer once you get the front end dialed in.

OlllllllO
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post #1060 of 1924 Old 08-22-2013, 05:19 PM
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Originally Posted by dayriesw View Post
No doubt there. Will report back after I do some work. Are you going with Rudy this weekend for the day ride at SI?
No, it was too short notice, and I'm trying to go to the easleyville ride for my friends first time.

Imped, should he set his pinion angle down to about 4*, or worry more about the caster at this low of a height?
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post #1061 of 1924 Old 08-23-2013, 06:18 AM
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Bring the pinion angle from 10 down to 6 (a difference of 4). With a 6* pinion angle he will have 6* of caster (12-6=6). Play with it from there.

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post #1062 of 1924 Old 08-23-2013, 07:36 PM
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That's a mean seal to replace!
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post #1063 of 1924 Old 08-24-2013, 11:39 AM Thread Starter
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Quote:
Originally Posted by Imped View Post
I can't imagine your steering has been anything to write home about with close to no caster.....your Jeep is gonna drive a hell of a lot nicer once you get the front end dialed in.
It was bad nor great (steering) before. I probably didn't notice how bad it was since I had not driven the jeep for months before.

Quote:
Originally Posted by LA-Sahara View Post
No, it was too short notice, and I'm trying to go to the easleyville ride for my friends first time.

Imped, should he set his pinion angle down to about 4*, or worry more about the caster at this low of a height?
Quote:
Originally Posted by Imped View Post
Bring the pinion angle from 10 down to 6 (a difference of 4). With a 6* pinion angle he will have 6* of caster (12-6=6). Play with it from there.
Ended up going with 5* tilt up from the previous position. More info in my post below this.

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Originally Posted by 94eagle View Post
That's a mean seal to replace!
Tell me about it. Haha.

06 WK 5.7 Hemi Overland
87 MJ Chief 57k original miles... getting built in the backyard.
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post #1064 of 1924 Old 08-24-2013, 12:09 PM Thread Starter
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Unbolted the uppers and tilted the front axle back 4* from where it was, which put my upper arms at a length of 15.25". After the weight was back on, it showed as 5* tilted back (haven't drove yet). Rokmen said they usually set the uppers at 15 1/8". After that, I checked out what the tb was doing at bump. The gusset was hitting.



So I took a little off



Since I had the grinder plugged in and the appropriate footwear on, I took a little out of the driver front strut holding the engine skid up.



Started to put it back on its own weight to finish installing the tb.





Springs look much better. Bolted the tb in and torqued everything down.

Since I was under the jeep, I checked all control arms and jamb nuts. The only jamb nut that was loose was on the rear upper, just beside the muffler.



Tighten that up, but the muffler has worked it's way over into the bolt/nut. I will be getting a new exhaust set up ASAP. The stock muffler is 27" edge to edge. That is about the same amount on room I have from here...





to the start of the ucf trans skid. I would like to delete the 3rd cat as Imped discussed before. I would also like a smaller high flow muffler with turn down just before the skid (up as high as possible for clearance). I should be able to use only one hanger at the end this away. We will see what the muffler guy suggests.

Thank you all for helping me thru this especially Imped and Hendrix for telling how to set it up and noticing the I had to much tilt.

Also, since I put the stock mirrors back on the stock spots on the full doors, I have not really driven doorless. I added these to be able to do that. I could also do the same thing to run windshield down legally (mount one mirror at top for rear view).





The tube clamps are from ballistic. The mirror is a Harley knock-off. I can't shut the doors with the mirrors on, but it can remove the mirror part in a minute to covert. All that is left to do is test drive.

06 WK 5.7 Hemi Overland
87 MJ Chief 57k original miles... getting built in the backyard.
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post #1065 of 1924 Old 08-25-2013, 10:40 AM
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Soooo..... Can we go wheeling yet? I'm tired of being a mall crawler.
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