392 D44 axles, where's the beef

[1996cc]

I don’t have a pic, but the tube coming down from the frame that holds the factory bump is at least an inch longer than the other JLs. I cut mine to install King hydro bumps…

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[1996cc]

Thanks for the info. I'm not sure I want to deal with the relocated control arm mounts. I have no idea how that would impact anything, so I'll shy away.

That was changed on the frame end, not the axle mounts…

 

[Some Random Guy]

That was changed on the frame end, not the axle mounts…

Oh, now I'm back on the fence. I might have to suck up the extra bump prior to upgrading tires. Thanks again!

 

[NyRey87]

Just got a set of 392 takeoffs with 80 miles on them and I tell you what these things are gnarly! Beefy indeed!
I knew most of the upgrades these have when compared to stock Rubicon Axles but I didn’t realize these have CV joints!

 

[XtremeRetard]

Nice. You got the brakes and everything..

 

[NyRey87]

Nice. You got the brakes and everything..

The whole shebang! Can’t wait to get them installed and regeared

 

[CarbonSteel]

Wonder how those CV boots will survive long term...

 

[NyRey87]

Wonder how those CV boots will survive long term...

We're going to find out

 

[CarbonSteel]

We're going to find out

Are they thick like the ones on RCV axles or just "standard" rubber CV joint boots?

 

[NyRey87]

Are they thick like the ones on RCV axles or just "standard" rubber CV joint boots?

TBH I've never seen the RCV in person so hard for me to say.

 

[CarbonSteel]

TBH I've never seen the RCV in person so hard for me to say.

I am betting they are not and are just regular CV boots which are not very durable. The RCV boots are about 1/8" thick and are pretty tough. Unfortunately, the RCV boots will not fit the Mopar axles, so you are stuck with them.

If not doing any serious rock crawling, it will probably be fine, but is something to monitor so that you do not have a failed joint due to lack of lubrication.

 

[NyRey87]

I am betting they are not and are just regular CV boots which are not very durable. The RCV boots are about 1/8" thick and are pretty tough. Unfortunately, the RCV boots will not fit the Mopar axles, so you are stuck with them.

If not doing any serious rock crawling, it will probably be fine, but is something to monitor so that you do not have a failed joint due to lack of lubrication.

Do you know if they need to be lubricated like the RCV's? Around every oil change or tire rotation

 

[CarbonSteel]

Do you know if they need to be lubricated like the RCV's? Around every oil change or tire rotation

No; I am almost positive they are "sealed" and need no lube. The RCVs (which is one of their shortcomings IMHO) sling grease as part of normal operation and is the primary reason they have to be lubed periodically.

I had a set and the shop tore the boots on installation. I pulled them to replace the boots and never reinstalled them (just sold them). I will be going to the Dana CrMo axles for the front next winter(during downtime).

 

[NyRey87]

No; I am almost positive they are "sealed" and need no lube. The RCVs (which is one of their shortcomings IMHO) sling grease as part of normal operation and is the primary reason they have to be lubed periodically.

I had a set and the shop tore the boots on installation. I pulled them to replace the boots and never reinstalled them (just sold them). I will be going to the Dana CrMo axles for the front next winter(during downtime).

Cool thanks again for the info. I will ride these for as long as I can then switch to a CrMo set at some point

 

[NyRey87]

Anyone know if I will be able to use the Drive Shaft from my Sport model with these axles? Would like to know before I drop off the Jeep in a couple weeks. Thanks!

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