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post #1 of (permalink) Old 11-24-2003, 08:38 PM
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Extreme Angles

I am running a 5 inch SPOA, and a YJ spring conversion. On the rear, there is too much drivline U-joint angle and I get really bad vibration under load. I realize that I need a traction bar, though that wont fix the angles. The front has EXTREME U-joint angles. I would like to keep the factory castor angle, but I have the U-joint problem. The driveline also hits the crossmember, but I am going to just cut that down. Also, I have already shaved the U-joint on the front as far as possible, and it still binds!

HELP!!! What do you guys with your extreme angles do!! [img]images/graemlins/confused.gif[/img]

Thanks for the help,
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post #2 of (permalink) Old 11-24-2003, 09:44 PM
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Re: Extreme Angles

On the rear after my YJ swap, I had a friend mill some 7 degree shims to get the angle back, then he built me a traction bar to hold everything in place. On the front I had your same problem before the YJs. Instead of cutting the crossmember and still having the bad u-joint angles I got a Trail Tough birfeild front shaft with a 2" extended slip yoke. The birfeild doesn't bind at extreme angles and the diameter of the shaft was half of a stocker(tube vs solid stock) which solved the crossmember problem. I don't know if TT still makes the birfeild shaft but it wasn't a cheap fix the shaft and 2" slip yoke set me back $400.
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post #3 of (permalink) Old 11-24-2003, 10:02 PM
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Re: Extreme Angles

Do you have room to move the axles further out? this would ease the angles a bit.

For the rear rockrat has the toy DS adaptors and the toy is a cardan unit. you point the pinion at the
Xfer U joint and the double U joints take care of the angle and vibes.

On tthe front try reversing the driveshaft end for end. one end has more clearance for the crossmember.
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post #4 of (permalink) Old 11-29-2003, 07:46 PM
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Re: Extreme Angles

So for those who dont have a birfeild from T.T., what do you do?
post #5 of (permalink) Old 11-30-2003, 08:24 AM
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Re: Extreme Angles

mine doesnt hit I have a stock front driveline sort of (1 inch spacer on t case and 2 inch extended slip yoke) the spacer helps with crossmember clearance the slip yoke makes it worse because it has a sleeve welded to it to extend the yoke making it even closer to the crossmember I dont hit but I come realy close <font color="red"> I did add some washers underneath the long arm mounts to raise the t case slightly about 1/4 to 3/8 of an inch (on mine I could go as much as 3/4 of an inch)</font color>
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post #6 of (permalink) Old 11-30-2003, 08:34 AM
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Re: Extreme Angles

You can also get one of these to stop the crunch it is a completely new mount that we make and allows you to cut the stock one out. This is one mocked in our stocker..

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