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post #1 of (permalink) Old 12-03-2003, 12:07 PM
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CV shaft or offset rear diff?

I'm swapping Toy axles onto my zuk, all purpose, street, trail and highway use vehicle. So....since it will see highway use, should I get a rear CV style driveshaft made for it (heard mixed results with that for driveline vibs) with the stock centered Toy diff?

OR should I get a rear Toy diff and cut one side 3" (rear is from Toy IFS truck so after cutting track the width will match the Toy front) and use Sky's shortened rear Toy axle shaft. I believe this makes you only have the rear diff offset by 1.5". Could I use a non CV driveshaft then? Highway travel with out vibes possible?

Any input appreciated.
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post #2 of (permalink) Old 12-03-2003, 12:38 PM
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Re: CV shaft or offset rear diff?

Hey Lebowski,

It's amazing how many are doing the toy axle swap, seems commonplace now.

Anyway when I did my rear axle, I pointed the diff up towards the t-case and used a stock front CV driveshaft from the a 83 toy truck. Actually, on advice of this board, I kept it about 5 degrees down when the truck was unloaded. When it was loaded as if for trail use, the springs dropped down enough that the pinion angle became about 2 degree down. In the stock rear location I think you pretty much have to use a CV driveshaft since the angles are steep. Maybe if you did a SPUA and kept the lift low you would be ok with a non-CV.

With this setup it drives pretty good. There is almost no vibration. I could barely detect a vibration over the worn mud tires on it. This was with a stock 83 toy axle in close to the stock rear location. It would be good enough for me for a daily driver (mine is trail only), but I don't know how much the u-joint life would be reduced.

A friend did the same kind of swap except he moved his axle back about 6 inches (relocated the gas tank). He got away with using a regular u-joint drveshaft. The pinion angle matched the t-case output angle. Drives fine, no significant vibration.

Don't have much to lose by trying it. If you don't like it, you can always yank the axle and send it to Sky for shortening.

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post #3 of (permalink) Old 12-03-2003, 07:49 PM
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Re: CV shaft or offset rear diff?

I'm wondering the same offset situation except that I want to use a toyota transfer center output( geting it cheap) and the hybrid zuk rear that is off set i have now I have a c/v shaft from RRO willl it vibrate or should i use a Land cruser offset transfer if i can find one?
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