Rubicon T-case ?????

[RockRod]

Will it replace my 231 with sye ok in my auto 01.....
What would I need... Have a good oportunity knockin.... :us:
Thanks for any info..

[Lawn Cher']

Supposedly a direct replacement... go for it!

[YETI]

If you are buying it new from AA or somwhere just get an ATLAS. If you are getting it from a wreck then good choice.

[ggruszynski]

It is a direct replacement. The 241 is clocked different than the 231, which actually tucks it into the tunnel a little more than the 231. One of the magazines did this swap, just don't have the link on this 'puter.

Gabe

[RCP Phx]

Mine is due in early next week so I'll have more input later,its supposed to be a direct fit(if you have a 23spline/short shaft.
http://www.jbconversions.com/pages/products/nvg241OR/index.html

[BrettM]

If you are buying it new from AA or somwhere just get an ATLAS. If you are getting it from a wreck then good choice.
I've heard this a lot, and yes the Atlas is a better t-case, but don't pretend like it's a small price difference. It's at least $1000 more for an Atlas, especially after driveshaft expenses.

[sidriptide]

the Rock-Trac t/case is not set up for an SYE, although it does have a yoke on the output.. RE and other vendors have a replacement yoke to accomodate a CV joint, i'm not sure what the difference is but there must be something different... i think its a great choice for a T/case! with the Rubicons i know that are total H/C rigs, i have lost respect for the stock axles and lockers.. but not one complaint about the 241, except an oil leak when it was new.... its a good upgrade over building up a 231 too considering the relative low cost....

[RCP Phx]

Im getting mine from John at JB with standard 1330 yokes both front and rear(its optional/no extra charge) vs the rear harmonic balancer assembly!

[VegasAnthony]

So How Much ???

[RCP Phx]

1850,but still alot cheaper than the atlas,that plus no mods sold me on it!And it was still cheaper than my 231/hd sye/tera-low in my 2000.

[Fred]

I've had one installed on my 90 for over a year. I do like the 4-1 4lo. It wasn't exactly plug and play on my 90. I had it installed with a 98 AX-15 which matches up to the transfercase. I also had a custom armored crossmember built for the install. For my 90, I had to install an electronic speedometer in the dash along with wiring it. Buying the connector to hook to the speed sensor on the transfercase was a pain. Mopar only wants to sell harnesses. When I bought it from JB conversions they weren't being so accomodating on the yokes on the t-case. It has a 1330 front output, and required a shorter front driveshaft. Mine has the balancer yoke, so I had to buy an adapter, along with two Tom Woods driveshafts. Along with the Hurst quick shifter, we are talking some real money. As an aside, I had to have the rear driveshaft rebalanced. The factory tranny mount had to be modified, and the linkage had to be shortened.

I got some of the driving driveline vibes worked out, but I still have vibes from start up in neutral. The transfercase also won't shift into 4wd while I'm moving. I don't know what the problem is there.

If I did it again, I'd just get an Atlas.

Fred

[Kejtar]

I've had one installed on my 90 for over a year. I do like the 4-1 4lo. It wasn't exactly plug and play on my 90. I had it installed with a 98 AX-15 which matches up to the transfercase. I also had a custom armored crossmember built for the install. For my 90, I had to install an electronic speedometer in the dash along with wiring it. Buying the connector to hook to the speed sensor on the transfercase was a pain. Mopar only wants to sell harnesses. When I bought it from JB conversions they weren't being so accomodating on the yokes on the t-case. It has a 1330 front output, and required a shorter front driveshaft. Mine has the balancer yoke, so I had to buy an adapter, along with two Tom Woods driveshafts. Along with the Hurst quick shifter, we are talking some real money. As an aside, I had to have the rear driveshaft rebalanced. The factory tranny mount had to be modified, and the linkage had to be shortened.

I got some of the driving driveline vibes worked out, but I still have vibes from start up in neutral. The transfercase also won't shift into 4wd while I'm moving. I don't know what the problem is there.


That's odd, I thought that the housing was supposed to be identical to the 231? If so why did you have to modify the tranny mount?

[XJ_ranger]

while searching on google, i found this - thought people might be intersted... this guy is selling a built motor, trans, and rubi t-case as a package for 2500...

http://www.paragonap.com/forum/showthread.php?p=21887
might as well spend 800 more and get a stronger tranny, and a parts motor...

[BrettM]

while searching on google, i found this - thought people might be intersted... this guy is selling a built motor, trans, and rubi t-case as a package for 2500...

http://www.paragonap.com/forum/showthread.php?p=21887
might as well spend 800 more and get a stronger tranny, and a parts motor...
if I had $3k that would be mine! good find.

[YETI]

If I did it again, I'd just get an Atlas.

Fred

Like I said.

[Fred]

>>That's odd, I thought that the housing was supposed to be identical to the 231? If so why did you have to modify the tranny mount?<<

I'd imagine the mount and crossmember in a TJ are quite different than in an XJ. I don't think the housing is identical, the transfercase is definitely bigger and heavier than a 231, which would make sense since it's originally from a pick up truck.

Fred

[sidriptide]

That's odd, I thought that the housing was supposed to be identical to the 231? If so why did you have to modify the tranny mount?

the case is not identical.. its a bit bigger.. not sure about the tranny mount issues..

[RockRod]

Thanks for the info....Still working on the hook up.... :repair:

[VegasAnthony]

so what is the consensus will think thing bolt right up or not??
the magazine install says nothin about clearance or bolt pattern problems??
later models are easier???

[Fred]

It will bolt right up to a late model tranny.

Fred

[MontanaXJ]

I've had one installed on my 90 for over a year. I do like the 4-1 4lo. It wasn't exactly plug and play on my 90. I had it installed with a 98 AX-15 which matches up to the transfercase. I also had a custom armored crossmember built for the install. For my 90, I had to install an electronic speedometer in the dash along with wiring it. Buying the connector to hook to the speed sensor on the transfercase was a pain. Mopar only wants to sell harnesses. When I bought it from JB conversions they weren't being so accomodating on the yokes on the t-case. It has a 1330 front output, and required a shorter front driveshaft. Mine has the balancer yoke, so I had to buy an adapter, along with two Tom Woods driveshafts. Along with the Hurst quick shifter, we are talking some real money. As an aside, I had to have the rear driveshaft rebalanced. The factory tranny mount had to be modified, and the linkage had to be shortened.

I got some of the driving driveline vibes worked out, but I still have vibes from start up in neutral. The transfercase also won't shift into 4wd while I'm moving. I don't know what the problem is there.

If I did it again, I'd just get an Atlas.

Fred

I would have to agree with Fred here. If you have to spend money on new driveshafts, front and rear, and have to put money into a CV adapter for the rear as well, you might as well get an AtlasII. You can then have the option of adding twin sticks and other cool stuff like a 32 spline front output. I have seen the 3.8 case, the one I would get, for about $1900 at the offroadtoystore and you may find it cheaper, I don't know. The only other thing you have to get is an adapter for the tranny to the t-case which I think are usually $200-$300. It probably end up costing a little more but it is the best t-case money can buy in IMHO.