rear differential

rear differential

mikemrq

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84 CJ7, 360 AUTO
84 CJ 7, Installed a 5" lift, getting new spring perches for the rear. Going to be installing a cv driveshaft in the near future. I'm going to rotate the axil to line up with the driveshaft and then weld the perches. Wouldn't the gears be starving for oil because of the tilt? Someone told me to take the rear differential cover off, drill a hole up higher and weld in a 1/2" nut for a plug. Has anyone done this?
 
If your worried about the level just jack up the rear when you fill it. You would have to weld a bung on the cover to move your fill plug.
 
I wouldn't worry. With the pinion turned up you will end up with more oil. (the fill is in the front on the AMC20) More oil won't be a problem.
All the gears will still be at about the same depth in the oil. The pinion bearings will be higher.
The breather may be lower. Check out this link: http://www.jeep-cj.com/forums/f2/high-pinion-angle-keeping-pinion-bearings-lubed-7529/

Someone told me to take the rear differential cover off, drill a hole up higher and weld in a 1/2" nut for a plug.
Whoever told you this must not have been thinking of the AMC20. Most differentials have the fill plug on the diff cover.
 
I wouldn't worry. With the pinion turned up you will end up with more oil. (the fill is in the front on the AMC20) More oil won't be a problem.
All the gears will still be at about the same depth in the oil. The pinion bearings will be higher.
The breather may be lower. Check out this link: http://www.jeep-cj.com/forums/f2/high-pinion-angle-keeping-pinion-bearings-lubed-7529/


Whoever told you this must not have been thinking of the AMC20. Most differentials have the fill plug on the diff cover.
LOL :dung: I thought he was talking about a Dana 44, good catch :chug:
 
I pop the cover off, take a look. Button it back up and 1-1/2 qt, fill throughout the breather hole I added to the housing. (Dana 44)

You are lucky just add proper amount through the front fill hole.

I love the CV.

Over 1300 hard miles with no U-joint replacement. Worth the time and money. :D
 
Would I be able to drive with my stock driveshaft until I get my CV driveshaft?
 
Would I be able to drive with my stock driveshaft until I get my CV driveshaft?


depends on how much spline you have, if you do not have enough your drive shaft will come apart while driving, my advice would be to measure and have some tube added by a local shop, or ask how much to turn yours into a CV :chug:

BUSADAVE 2 thumbs up for the link :notworthy:
 
Would I be able to drive with my stock driveshaft until I get my CV driveshaft?

Regardless of the spline engagement with the CV you will have to rotate the axle so the pinion points at the transfer output shaft.

With 5" lift you are for sure going to go through u-joints. No fun pulling the driveshaft off along side on the road with cars zipping by.

Don't wait with the CV. Call Tom Woods. Great service.

Tom Wood's Custom Drive Shafts - Tom Woods Custom Drive Shafts Custom Driveshafts Specialist
 
:agree:
If you rotate the axle now and try to run a reg shaft you WILL eat up some u-joints, just bite the bullet and get the cv now.
Tom Woods is great, but having it done local might be cheaper, you can shorten an older front xj or ford explorer cv shaft.
 

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