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Post by Nightpath on Nov 23, 2015 10:09:42 GMT -4
I was having a discussion with someone the other week about transfer cases, and it came up that you could take parts from a np241 and add them to a 242 to make a heavy duty transfer case.
Has anyone heard or this,or similar?
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kilo69
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Coldstream Explorer
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Post by kilo69 on Nov 23, 2015 10:13:56 GMT -4
I was under the impression the 242 was actually stronger than the 241... however since it has the full time 4wd it has more to "break"... so unless you plan to change that it seems like a waste of time?
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Post by Nightpath on Nov 23, 2015 11:10:12 GMT -4
I just have a dumpload of parts sitting around, it's what sparked the conversation.
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bill richards
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Millwood Marauder
mud re-freshener
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Post by bill richards on Nov 23, 2015 11:28:53 GMT -4
I was having a discussion with someone the other week about transfer cases, and it came up that you could take parts from a np241 and add them to a 242 to make a heavy duty transfer case. Has anyone heard or this,or similar? Just to clarify... do you mean the NP241OR, or the NP231...or do you really mean the NP241? Memory is foggy here... but I believe Jan has first hand experience with putting the wider NP242 chain in a NP231. I'd doubt there'd be much advantage to swapping parts between the rubi NP241OR case and the NP242..if possible. Bill
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Post by Nightpath on Nov 23, 2015 11:47:19 GMT -4
From what I remember it was basically sticking 241 parts into a 242 case with a few of the 242 parts. Makes a heavy duty 231 I guess
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Post by gmtrucks on Nov 23, 2015 17:54:39 GMT -4
the numbers mean 2 = 2 speed second number 4 is strength third number is the shift mechanism 1 is standard shift etc 2 I believe is auto shift letter is brand c chevy etc some parts com be interchanged
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Post by gmtrucks on Nov 23, 2015 17:59:50 GMT -4
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Creepy
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Dartmouth
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Post by Creepy on Nov 23, 2015 18:20:34 GMT -4
I think you got your model numbers mixed up. Possibly saying 241 when you mean 242.
The info I have is from handling the parts and building a couple of cases and a reduction box.
231j = common jeep, 3 pinion planetaries, skinny chain. 231c = S10 Blazers, etc. Exact same as 231j, with 6 pinion planetaries, and a wide chain. 242 = similar to 231, but with a differential for AWD. (different driveshaft speeds) The case is visually larger. I'm not aware of parts swapping w a 241. 241 = full size aluminum T-cases. Took the place of iron 203/205 series. 241OR = oddball Rubi 4:1 case that may share parts to the common 241.
Use 231c parts to swap into/build a stronger 231j. It is preferable to use a 231c rather than a 231j for building a reduction box.
I have no info on 241/241OR, other than the case is totally different from 231.
242 has large planetaries, wide chain, and a 32 spline front output shaft. These parts will not swap into a 231 case. I don't know if 241 parts swap into a 242. The components appear to be more robust that a 231, but there are a few more moving parts. I'd suggest 242 are stronger at the chain, but both 231/242 suffer from the same small diameter output shaft, making them equal.
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Creepy
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Dartmouth
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Post by Creepy on Nov 23, 2015 18:24:44 GMT -4
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Creepy
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Dartmouth
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Post by Creepy on Nov 23, 2015 18:50:15 GMT -4
From what I remember it was basically sticking 241 parts into a 242 case with a few of the 242 parts. Makes a heavy duty 231 I guess There's no 231 case in play, how will you get a 231 out of two other cases that aren't a 231?
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Post by Nightpath on Nov 23, 2015 19:00:23 GMT -4
I'll have to go check the cases and parts, I know it's a 241 but not which version, and there's definitely a 242 with just about everything in it just need to put together.
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Creepy
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Dartmouth
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Post by Creepy on Nov 23, 2015 19:05:04 GMT -4
Well you prob don't have a Rubi241, because its 4:1, rare, and worth a lot of cash to just be sitting around. You have to search them out.
I'd be interested to hear if you can put 241 parts in a 242, but i don't see the purpose unless the output shaft smallest diameter is increased.
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justajeep
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Bear River, NS
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Post by justajeep on Nov 23, 2015 20:03:00 GMT -4
The 241 & 242 use the same front half of the case, but not all years are exactly the same. I rebuilt a 241D out of Dodge diesel that had a broken front case. I had 3 or 4 242 cases and only one was exactly the same. The 242 is a strong transfer case, I see no point in turning one into a 241 unless you didn't want the awd setting.
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Post by Nightpath on Nov 23, 2015 20:06:36 GMT -4
It's a 241 DLD
I think a part of 2 from the 242 might be missing, I still have yet to go through it. If it's all there I'll be making a back up for my 242 currently in the Eagle, if not I'll be messing around to see what comes out of it.
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justajeep
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Bear River, NS
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Post by justajeep on Nov 23, 2015 20:17:01 GMT -4
There are no internal parts from a 241 that you can use in a 242, nothing you can mix and match.
The 241dld is from 1998-2002 Dodge diesels, input and output are bigger than Jeep. If it's a complete good case, you're better off selling it and buying a few 242s with the money.
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