Going SOA. - Driveline angles. (part 4) - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 06-07-2000, 06:44 PM
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Going SOA. - Driveline angles. (part 4)

My SOA is coming along great. Had a few ?s though:

How much angle can my CV driveline handle?

Should my front differential pinion be pointed straight back so it's parallel w/ the tcase output? I'm told I need +6 degrees of caster, but I'm unsure how that will have my yoke pointed. I don't want to weld any pieces on then find out they're wrong.

<font color=blue>&lt;b&gt; -Dorian&lt;/b&gt;
&lt;a href="http://www.4Low.com/jeep"&gt;88 YJ w/ square headlights&lt;/a&gt;&lt;/font&gt;
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post #2 of (permalink) Old 06-07-2000, 08:41 PM
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Re: Going SOA. - Driveline angles. (part 4)

ok first. you do not need 6 degrees.. you need positive caster.. scout axles have 0 degrees.. which is fine.. as long as you have 0 or + caster angle.. if you are not cutting the knuckles off.. then you want to line up your caster.. say 6 degrees.. and then check your pinion angle.. if you can find a happy medium between the two..then that is good.. i like to point the pinion at the yoke on the transfer case.. if you still have the shackles in the front.. then you can get away with pointing the pinion slightly lower than the trnsfr case yoke.. since it will flex back.. a cv joint can handle some good angles.. i dont know the exact figures.. but i know it will handle a soa quite well..
you rear pinion.. i set slightly below the trnsfr case yoke.. do to it torque on it from the engine.. will torque it up some..
like i said.. im no professional.. i just kinda eye sight it. ...then check the angle..

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post #3 of (permalink) Old 06-08-2000, 12:05 AM
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Re: Going SOA. - Driveline angles. (part 4)

The front I just parralel match the stock perch, the YJs caster is fine, and the front drive shaft is long enough to handle the angle with no problem. I agree with Jeepgod on the rear, it should point just a degree or two below the rear yoke to allow for upward rotation under torque. I have set up 2 YJs this way with good results. Although I have had an on going battle with axle wrap,on my 89, untill my recent, home built spring modification.

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post #4 of (permalink) Old 06-08-2000, 06:53 AM
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Re: Going SOA. - Driveline angles. (part 4)

h8 and jeepgod are right, but there is more.... remember that when you put weight on the jeep, the springs will get longer and change the angle of your pinion. heres how i did mine... i had the carrier out of the axle so i could look right through. i put the axle under the jeep on jackstands and put weight on the axle. i then ran a broom handle through the pumpkin and lined it up with the yoke on the x-fer case. then i marked off the angle the spring pads needed to be, and pulled the axle back out. when the spring pads were finished, i put a level on them and then put the knuckles on at 6.5 degrees.

it's sort of still a cj thingy....see it at http://www.jeepgod.net
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