RCV Heavy Duty CV Axles

[Matt]

I've seen people bust pinions, yokes and even blow apart their carriers..... I think ill pass on the $2000 CV axles. Eventually ill just cary a $60 spare for each side. I don't want to be the guinea-pig and find out what's next in line for our vehicles.

[07JeepXK]

You make some good points but here is what I am worried about:



This happened along with a busted passenger CV. We wheel a 6500 lb vehicle with a front axle that is about 1" in diameter. Right now, the CV is the weak link.

Is this the passenger side cv you broke? Or is it the shaft that goes inside of the passenger side of the diff???

I'll be the guinea-pig as long as someone doesn't beat me to it. I guess it doesn't help any that you guys have the electronic limited slip up front that can go to full lock. That probably part of the problem along with the power of the Hemi.

[Matt]

That's actually what worries me the most. I would love to find out that once the CVs are bullet proof we'd actually lose traction before another part of the drivetrain grenades..... which is possible with the limited tire sizes we can run, even with 4" lift. The price of the CVs is just too much for me to risk.. but I'm all for seeing what happens if someone else is up for it.

[TrialByFire]

Is this the passenger side cv you broke? Or is it the shaft that goes inside of the passenger side of the diff???

That is the shaft that goes from the diff to the passenger CV. I blew both up at the same time (sawing plus a little bouncing--but nothing violent!). We managed to extract the broken shaft pieces from inside the front axle with a good magnet, without disassembling the front diff (whew!).

[07JeepXK]

That is the shaft that goes from the diff to the passenger CV. I blew both up at the same time (sawing plus a little bouncing--but nothing violent!). We managed to extract the broken shaft pieces from inside the front axle with a good magnet, without disassembling the front diff (whew!).

I'll contact RCV tomorrow and have then make an inner shaft for our XKs that's stronger than the oem shaft.

[valpacer]

Just found this thread!

My last cv did exactly that as well, 2nd trip out. Even my hobbled together factory shaft is lasting better, but still cant take the full lock max torque situation you can get offroad.

Yep, im pulling the trigger on a set of the QDII cv's, down here the factory shafts are over 2400 per set from the dealer, so cheaper than that. And even over 12 months at my current rate its worth the time on the track wheeling!

FJ cruisers (which are just landcruiser Prado's underneath) are running these type CV's on 34's and are not having issues with diffs or front shafts etc. And the WK front diff is stronger than the FJ by a mile, the extension shaft is 1 1/4" thick!. The front shaft CV's are very easy to change over too, so if that becomes the weak spot its even easier than doing a CV.

As soon as we work out the shipping they tell me it will be 2-3 weeks for delivery.

My SFA swap is at least 12 months away, rear LA conversion is hopefully starting in September, so these should get me through till then!

[valpacer]

Here is how mine ended up!





Im over this!

[Matt]

Awesome. If the drivetrain holds up to your abuse that'll make me feel a lot better.

[07JeepXK]

I'm curious. Who here owns a 4.7 L with QT II and has snapped an oem cv axle?? Please post up!!

[stites-xk]

I'm curious. Who here owns a 4.7 L with QT II and has snapped an oem cv axle?? Please post up!!

I did passenger side on eagle rock last summer running a 2" lift and replaced it with a oem one. No problems since!

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