shawn Posted September 8, 2014 Share Posted September 8, 2014 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? Link to comment Share on other sites More sharing options...
88ComancheMitch Posted September 8, 2014 Share Posted September 8, 2014 There is a conversion out there for the dana 30 one piece front axle vs. The two piece now. Is this what you mean? Link to comment Share on other sites More sharing options...
mvusse Posted September 8, 2014 Share Posted September 8, 2014 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. Link to comment Share on other sites More sharing options...
gogmorgo Posted September 9, 2014 Share Posted September 9, 2014 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. Link to comment Share on other sites More sharing options...
Blue88Comanche Posted September 9, 2014 Share Posted September 9, 2014 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 Link to comment Share on other sites More sharing options...
Jeepman Posted September 9, 2014 Share Posted September 9, 2014 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... Link to comment Share on other sites More sharing options...
ScottJeep Posted September 9, 2014 Share Posted September 9, 2014 Very interesting....thinking I'm about due on my 97' XJ. Was not looking forward to the hassle of dealing with the universals. Props to the OP. Link to comment Share on other sites More sharing options...
Trapn6.0 Posted September 10, 2014 Share Posted September 10, 2014 Anyone have some part numbers. What a rough price. Link to comment Share on other sites More sharing options...
ftpiercecracker1 Posted September 10, 2014 Share Posted September 10, 2014 Anyone have some part numbers. What a rough price. I second this. Link to comment Share on other sites More sharing options...
Jeep Driver Posted September 10, 2014 Share Posted September 10, 2014 Unless I'm all wet here.............. rockauto, 97 Grand, axle half shafts..........either side........under $40. Link to comment Share on other sites More sharing options...
Trapn6.0 Posted September 10, 2014 Share Posted September 10, 2014 If their so cheap why aren't more people running these? Link to comment Share on other sites More sharing options...
Jeep Driver Posted September 10, 2014 Share Posted September 10, 2014 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. Link to comment Share on other sites More sharing options...
Incommando Posted September 10, 2014 Share Posted September 10, 2014 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. Link to comment Share on other sites More sharing options...
Scottyb Posted September 10, 2014 Share Posted September 10, 2014 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. Link to comment Share on other sites More sharing options...
Scottyb Posted September 10, 2014 Share Posted September 10, 2014 http://www.rcvperformance.com/ Link to comment Share on other sites More sharing options...
Incommando Posted September 10, 2014 Share Posted September 10, 2014 http://www.rcvperformance.com/ Those are some dandy pieces but are not even in the same league as the stockers Link to comment Share on other sites More sharing options...
Scottyb Posted September 10, 2014 Share Posted September 10, 2014 http://www.rcvperformance.com/Those are some dandy pieces but are not even in the same league as the stockers Nope not even close, but they are the only CV worth running offroad. Link to comment Share on other sites More sharing options...
89eliminator Posted September 10, 2014 Share Posted September 10, 2014 some people will run CVs because when they break, they don't take out the lower ball joints like u joint shafts will. Link to comment Share on other sites More sharing options...
gogmorgo Posted September 11, 2014 Share Posted September 11, 2014 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. Link to comment Share on other sites More sharing options...
MuddFoot Posted September 13, 2014 Share Posted September 13, 2014 or you could just get lifetime warranty from autozone or advance for 70 bucks each Link to comment Share on other sites More sharing options...
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