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cv shafts. who's running them?


shawn
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a guy i know here has changed to cv shafts in his d30. i don't know the details but am guessing theyre from a zj.  this sounds like a good mod but i hear the shafts are slightly longer. anyone have any knowledge of this mod?

 

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The CV shafts are the same length as single piece u joint shafts. The driver side is a direct swap, for the passenger side you need to do the single shaft conversion.

 

I have run one temporarily in my MJ, and my daughter's Selec-trac XJ runs them. Much smoother than u joints.

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a guy i know here has changed to cv shafts in his d30. i don't know the details but am guessing theyre from a zj.  this sounds like a good mod but i hear the shafts are slightly longer. anyone have any knowledge of this mod?

 

 

Got mine off rock auto. Bolt right in, but need the same seals as for a one-piece shaft swap. I'm a fan. As said, they're much smoother in 4x4. Can't speak for durability as they were only in for three weeks before I parked the MJ for a bad engine knock.

:yeah that:

 

I also bought my CV shafts from rock auto. I use full time 4wd all the time and the CVs make it a much nicer drive.  Mine where ordered for a ZJ.

 

You will need to remove the ABS tone ring to make it fit properly on earlier D30s without ABS

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Yes I ran them in my MJ D30 for years (NON Disco)... As said a bolt in and only Mod needed is if you have a Disco D30...

 

I was Going thru u-joints about 1 a year then switched to ZJ CV's and ran them for 6 years without issues then Switched to WJ Front D30 which has them as well...

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If their so cheap why aren't more people running these?

Couple of months ago there was a seller local to me on CL selling both sides for a ZJ that he sold and he no longer had use for the CV shafts. He was asking $150 and I considered jumping on it but never got around to getting together with him, glad I did not.

 

Some of us look to swap parts any way we can that were intended for other vehicles. In fact I think Hornbrod has a thread asking us to list parts swapped from other vehicles.

 

To answer your question.........Most folks just don't know they can.

 

 

If I was not building a new engine, I'd probably get a set.....maybe in the future.

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Funny but many CV shaft guys deliberately switch to u-joint style shafts for strength and longevity.   :dunno:  If you have swapped in a 242 and have AWD and/or you have a street rig then the CV's seem to be the way to go...if you 4-wheel it appears U-joints are the way to go. A quick google brought up dozens of posts.

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Funny but many CV shaft guys deliberately switch to u-joint style shafts for strength and longevity. :dunno: If you have swapped in a 242 and have AWD and/or you have a street rig then the CV's seem to be the way to go...if you 4-wheel it appears U-joints are the way to go. A quick google brought up dozens of posts.

.

 

This is correct info, I have broken several cv shafts extremely easy offroad. If you want to run CV's then RCV's are the way to go.

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RockAuto has CVs listed for '91 & '92 MJs. Before that, there was an older style steering knuckle, and you'd have to knock off the ABS tone ring to make them compatible. Surtrack CH8220 (short side, $39) and CH8221 (long side, $45). If you look them up for a '97 ZJ, there are more options, ranging up to near $200/side.

As far as off-road strength is concerned, the u-joint presents itself as the weakest link in the shaft, as does the CV. If you notice the crack in the u-joint soon enough, you can simply replace the joint, without even needing to pull the shaft if you're good. Break a CV, and you've got to replace the entire shaft. I went to CVs because I never managed to loose a u-joint without completely exploding it and taking out the yokes anyhow (Disclaimer: I could just be an idiot). And the RockAuto CVs were just as good an option for me cost-wise as getting junkyard shafts, and I'd much rather put in new parts with at least a small warranty. I don't do any extreme rock crawling so I wasn't looking for all that much strength. I went ripping around through a muddy parking hole shortly after the swap, and the increased smoothness was very appreciated.

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