Superior super 30 kits???
Junior Member
Joined: Apr 2008
Posts: 38
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From: Black Forest, CO
Year: 1997
Model: Cherokee
Engine: 4.0L
I'm running Yukon 27 spline alloys with Super Joints and a Lockright and it does the job just fine.If a shaft breaks I can replace it with a stock trail spare to get me home.
CF Veteran
Joined: Nov 2008
Posts: 6,989
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From: Oak Harbor, WA.
Year: 1987
Model: Cherokee
Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
The method to my madness in dropping the kind of cash that a Super 30 kit costs, would be to have no broken shafts.
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Senior Member
Joined: Sep 2008
Posts: 596
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From: Georgetown, KY
Year: 1998
Model: Cherokee
Engine: 4.0L
Another thing to consider is the difficulty in finding 30 spline axleshafts in an emergency when/if you break one.
I'm running Yukon 27 spline alloys with Super Joints and a Lockright and it does the job just fine.If a shaft breaks I can replace it with a stock trail spare to get me home.
I'm running Yukon 27 spline alloys with Super Joints and a Lockright and it does the job just fine.If a shaft breaks I can replace it with a stock trail spare to get me home.
CF Veteran
Joined: Jan 2008
Posts: 3,671
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From: LI, NY
Year: 1998
Model: Cherokee
Engine: 4.0, bolt ons for days...
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Seasoned Member
Joined: Jun 2008
Posts: 388
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Year: 2001
Model: Cherokee
Engine: 4.0
i honestly dont think a super 30 kit is going to stop me from breaking something up front but i dont think it would hurt. The only thing i dont like about it is that if i do break im not going to have a 30 spline shaft on hand. Im going to be running 35x12.50R15, 4.88 gears, and i want to run a locker up front but the only locker iv liked so far is a trutrac. Iv already got a ruffstuff diff cover for the front and i powder coated it so that sorta takes OX cable locker out of the running. ARB lockers are expensive and im not to impressed with the compressor on them.
i think its a good idea. to swap a HP 44 in is expensive and to swap a lp 44 doesnt make much sense when you look at it. if u are running a 30 spline hp 30 the strength difference isnt that much. you wont see any breakage running 35's with that kit. no way. i would guess that you could go up to 37's with no worrys. we are running 37 inch mickey Thompson baja claws on a locked hp d30 in our cj. that has 27 spline chromolys w/ yukon superjoints and 4.56 gears. we have yet to break anything and we wheel it pretty hard.
it has a tired old 4.2 but i still think you wouldnt see any trouble with your 4.0
it has a tired old 4.2 but i still think you wouldnt see any trouble with your 4.0
Last edited by richxj89; Jan 24, 2009 at 06:15 PM.
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Joined: Aug 2008
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From: tan house white shutters key's under the flower pot
Year: 1996
Model: Cherokee
Engine: 4.0
like already said, the idea is not to break stuff, i like the idea of strong shafts, but i wouldn't run those beastly unbreakable u joints, i'd rather run good ole spicers, that are good and strong, but i'd rather keep the u joint as the week point. easiest trail fix, unless you're competing, then everything should be as unbreakable as possible. just my theory, i'd rather replace a u joint, easy to keep spares, and easy to replace and cheapest.
on toyota axles i know guys that will replace the bolts on the back of the bearing with grade 2 or something, so they are the only part that will break, when they do they back out the broken part, and put new ones in.
on toyota axles i know guys that will replace the bolts on the back of the bearing with grade 2 or something, so they are the only part that will break, when they do they back out the broken part, and put new ones in.
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From: tan house white shutters key's under the flower pot
Year: 1996
Model: Cherokee
Engine: 4.0
ya, if you don't catch it right away it is possible. if you hear the u joint snap, and stop you're usually ok. if you think oh that was just some normal pop, i'll try to keep going, then you usually hurt yourself.



I'd buy it if my "want" listed wasn't so long.