you should not shift into low when moving on ether
both TC work the same
the 242 has an extra position

 

if you have a 231, how hard and what parts would be needed to switch to the 242?

 

no. how can you "use it wrong?"

grands use a viscous coupler, those are different cases. the 242 has a differential in fulltime mode that supposedly has torque-sensing characteristics. i've found that it works like a full open diff.

 

you would be better off swapping the TC
its not just one part you would need to change the main shaft and all the gears

 

if you use the full time position
for hard heavy 4x4 you destroy it

 

says who? 5.9 durangos use the same case. its rated for over 1400 lb/ft or torque.

 

I think you are confusing full time and part time
in part time you are locked in
full time has a diff with planetary gears and a torque clutch that will get trashed if you work it to hard

 

i'm not.

http://novak-adapt.com/knowledge/np242.htm

 

I never said the 242 was week
just that the full time position can be damaged
more easy than the part time
because of the planetary gears

if get into a position that you spin both front tires hard and not the back
you can damage the mechanism

 

The 242 is a bit stronger than the 231, you can tell that by the NP/NVG numbering system... That's why the 241 is stronger than the 231.
And it's a geared for around a 48/52 torque split while in F/T, but the torque split remains while in P/T, with the exception that it locks all 4 wheels in regardless of slippage. It technically isn't "P/T"per se, but rather "acts" like a P/T case.
And if you want to do a swap, swap in a 241OR, it was built to withstand a Cummings diesel engine, and is one stout lil T/C.