Quote:
Originally Posted by absolute yota
I broke a CV yesterday, and my buddy brike one in his FJ a couple weeks ago. Both were not OEM but they were the "tough one" from advance auto. They both broke shafts at the inner joint. Im not sure that the outer joint is the weak point. If the only difference on these is the outer joint then we both would have still broke the CV , then wed be out $500 + instead of $80. Im not saying yours aren't better but how can we address the weak point at the inner joint?
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Thanks for the honest feedback everyone.
Do you know what brand the axles were? On my 3rd gen 4Runner, when I broke my 2nd axle, I replaced it with an axle with a lifetime warranty at Checker Auto and it was made by Cardone. Later Checker replaced the Cardone with Mastercraft. I broke and outer joint and an inner joint on the Cardone. Two of the mastercrafts had junk steel and the inner axle shafts broke off in the diff at the stub.
You might want to try a different brand axle. Maybe try Napa? They seem to do the best in the cheap replacement category from what I've heard (3rd gens feedback). The axles all seem to be pretty different in quality when it comes to aftermarket. I forgot the brand name that Autozone was carrying but I've known of them to bind at full droop so maybe avoid that one. This is all info from 3rd gen axles but it's somewhat relateable.
Cryo would be the least expensive way I know of to get some more strength from the axle. You can gain roughly 30% strength depending on the steel. If it really is the inner axle shaft that is consistently failing we'd be open to taking a look at it as an option.
Quote:
Originally Posted by superman3043
Our main issues are with leaky boots.
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Are the boots tearing because of the lift and greater CV angles?
or
are the convolutions (ribs) rubbing on each other and abrading through? Or some other reason all together?
Quote:
Originally Posted by BlackWorksInc
The picture looks pretty similar to the factory unit, honestly the few failures I saw on the forums here looked more like the inner joint and/or shaft snapped so I would be looking at those areas more for reinforcement? .
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It looks like a factory unit because we take a Toyota factory unit and replace the guts of the outer joint. The cage and race are replaced with thicker chromoly steel components. We've found the Toyota steel to be the strongest until you get into 4000 series, chromoly, etc.
Of the failures you saw do you remember what brand they were? Were they OEM or aftermarket? In my personal experience I've found a big difference in quality of steels.
Here's a good example of junk steel. This was in an aftermarket axle. This was a clean break at the shaft not the joint. Virtually no shock load on this. Not even much of an obstacle in my opinion.
https://www.youtube.com/watch?v=D9Emw33O2G4
Quote:
Originally Posted by absolute yota
Has anyone broken an outer yet ?
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I've seen an outer break on a 4th gen 4Runner Toyota OEM axle. Steering was turned to driver's nearly all the way and had some pretty good droop on the passenger side. Slow and steady throttle to crawl up a rock. Grenaded the outer joint.
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