From another thread I started.

I have a 231D HD out of a 97 dakota 5.2 5 speed. Input shaft is 23 spline .840", output is 32 spline internal slip, from my research ot should also have a 1.25" chain.

 

I pulled a 231 from a 99 Durango to rebuild and put in my YJ. I can tell you that it does have the wide chain, but does not have a 6 pinion planetary. It also does not have a syncro for shifting.

 

Good info. The WJ 242's do not have 6 pinion planetary gear set either.

 

IIRC only chevy 231s have the 6 pinion planetary. Dodge cases are rumored to have the 6 pinion, i havent opened one up to find out but there are plenty of threads around from dissappointed people who have.

Do jeep t cases have a synchro for shifting? Sure cant tell lol

 

IIRC only chevy 231s have the 6 pinion planetary. Dodge cases are rumored to have the 6 pinion, i havent opened one up to find out but there are plenty of threads around from dissappointed people .

I just opened the 242D and replaced a few seals and bearings. yes they do have 6 planetary gears and a wide 1.25 chain. But I noticed that I might not have the same gear selection as 242j It seems like it has 2wd,4wd, neutral,4low . I didn't see any kind of internal clutch like that of the wj .

 

So am I correct in understanding that the Dakota/Darango 242 will work in a wj if you replace the driveshaft with a longer/different spline count one? Does the input shaft work or does it need to be swapped as well

 

If its going in your 4.7 WJ you will need to swap the input shaft out of your current case and get the 32 spline rear drive shaft (Dodge 242 has 32 spline). I dont know if the Dodge 242 rear drive shaft is the right length or not. But you could get the shaft and have it made shorter or longer or it might be just right as is.

 

As far as driveshaft, i had the idea of swapping just the 32 spline slip yoke from the dodge driveshaft onto the jeep driveshaft. I havent verified if the u joints are the same or not. For me the stock driveshaft would be the perfect length, but my zj is far from stock

 

I seem to remember someone on here swapped the ends of the DS and it worked. I'll look for it. Easiest way to check I guess is to see if the joint is the sale.

I'd like to swap a 231HD with the speedo on the tail cone in mine when I do the axle swaps.

 

I seem to remember someone on here swapped the ends of the DS and it worked. I'll look for it. Easiest way to check I guess is to see if the joint is the sale.

I'd like to swap a 231HD with the speedo on the tail cone in mine when I do the axle swaps.

You can install a 231j sye, which has a speedo gear in the tail cone, onto a 231d Hd.

 

Cool.

 

242D input shaft

 

I built a 231J from a 2003 Liberty (JY sells them dirt cheap because it's from a Liberty) and added a wide chain, 6 pinion planetary, and SYE. Link to pics here. It's my understanding that the wide chain and 6 pinion planetary are from a 241D. I had to swap in a long input to mate it to my V8 trans. Anyway, don't want to muck up your thread too much. Just thought my pics may help for reference.

 

231c have the 6 pinion planetary stock. That's from research I have done.

231D HD has 3 pinion and wide chain. I know because I split mine open to install a jeep mainshaft and Tailcone.

In all the threads I could find online about 6 pinion planetaries, 231c and possibly 241c have them. Many disappointed people bought dodge cases for the planetaries only to find they have only 3 pinions. My 97 Dakota tcase confirmed it

 

No problem. The more info the better for fellow Jeepers.

Wonder if the six gear would fit in a 242 HD.

 

I believe they will, the planet case the pinion gears have the same case number stamp on them in the 247, 242, 241DLD and 231D out of a Dodge 1500 that I have disassembled this 231D (1500 PU) has the wide chain and 3 pinion planet. The difference is some of the planet cases have 3 pinions and three indentations where the other three pinions would go but the holes are not drilled. I have a 241DLD disassembled the planet gear case in it has 4 pinions BUT the other 2 holes are drilled so it looks like it is possible to install the other two pinions to make it a six pinion.

I removed the pinions from a 3 pinion planet, the little shafts punch out easy they just have small stake marks holding it in place. Inside the individual pinion gears there is two sets of loose needles, three little spacer rings and two thrust washers. I haven't got around to trying to install the pinions in the 4 pinion Dodge planet.

One thing I noticed when I went to install a WJ V/8 long input in the 231D was the dodge input had a wide bearing but the WJ input shaft has a shoulder so it needs a different (narrow) bearing. The OD of both bearings is the same so that is not a problem either will press into the Dodge case.

One note on the late model 241DLD T cases. They go for next to nothing so I bought one to see if I could swap in a WJ V/8 input and install it in my WJ. When it arrived I noticed the front output was a long splined shaft. It turns out at some point Dodge 1500 front drivelines used a 30 spline slip joint at the T case. I am not sure if any other front output shafts from other models of 241s will swap in. The other issue is the T case main shaft has a larger diameter front pilot so it is impossible to swap in a Jeep input shaft.

gcJeeping if the 241 info is inappropriate in this thread PM me I will delete it. I really appreciate the work you are doing here.

 

Hey Guys,
i just read your research on the 242D last year.
Do you know if the 242D fit in a WJ V8 without big modifications?
My NV 247 just exploded a few days ago when i drove home after a hard day :/

 

If the 242D that you find is in decent shape and you just want to do the minimum work to make it Jeep WJ V/8 compatible. All you have to do is swap the input shaft and input shaft bearing from your 247 into the 242D. The same applies to 231Ds out of Dodge pickups. Of course seals are not expensive so if you feel like it you could replace them. IMO there is no need to replace perfectly good bearings.

 

I'm doing this exact swap right now have a 99 Durango 242D case going in to replace my WJ 242 case behind 4.7 engine. The only thing that seems to be needed in this case is to swap out the input from the WJ case to the Durango case as they have a completely different length. The bearing for such is also different, I ordered a durango rebuild kit so i have the wrong one and I'm stuck waiting on a swap out piece at the moment. The rest is all bolt on. If you were doing a 242 swap for 247 you would need to do the same imput swap plus deal with the different rear DS length.

 

There is basically 3 large unit bearings to replace in a 242 case if you have it all apart to change the input it would seem kinda dumb to not change them, they plus a set of seals and fork pads isn't even $100.

 

A general contractor that builds apartment building for a living will have a different take on what is dumb than will a guy that buys a hammer and a saw at Lowes and build his very first outhouse or chicken coop. The same thing applies to mechanical work. IMO there is no need to replace perfectly good bearings in any gear box.

 

Tollmtn I'm Not trying to argue this point not sure why you are? but I guess my thought would be unless its your own TC that you were previously using how do you know they are truly good or not? the ones in the 242 I have removed are all the type with an integral cage so only thing you can really see is the inside surface and if that looks nice and shiny great but when i picked up the old version and new they looked pretty much the same but you can feel the new one is MUCH smoother as it rotates and makes a slightly different sound also. I would just think if ones goal is reliability while keeping cost in check you wouldn't really be going out of your way if you are already doing the input shaft change and if you bought some used 242 Durango box you don't really know its condition/life

 

LOL you make 2 post and type over 200 words then say "I'm Not trying to argue this point." OK neither am I, in post #21 that was me trying in a nice way to tell you that the opinion on bearings I gave in post #19 might "seem kinda dumb" to you but that opinion would not "seem kinda dumb" to a person that has deep experience in the topic. I had hoped you would get that message and let it go at that.

Beside in my original post I was merely pointing out that both the 247 input shaft and bearing could be swapped into the Dodge T case and that there is not a good reason to replace perfectly good bearings.

Another thing you may have missed is my post was a reply to Grizz89. The only reason for my reply was because I noticed that he is in Australia. So I reasoned that possibly parts for Jeeps are not as plentiful there as they are here in the states so he may want to use as many of the parts that he has at hand as possible.

So.... Please read exactly what I said, I spoke purely about the minimum necessary parts, do not read anything else into it. As far as maximums go I could care less if a person feels compelled to empty the T case and replace everything in it.

 

Finally back together

 

Finally back together

Ooooooooo..... pretty! Does it work now is the question? Let us know!!!

 

Looks good.

 

^ This.

Theres at least 8-10 Durangos in my local wrecking yards right now with 242s in them.

 

There's a million here in norcal. Could be my new side business.

 

Bueller....bueller....has anyone seen bueller?

 

Bump!!!

 

He said he ain't gonna install it till April/may

 

Ahem.......read the dates sir............