I'm buying a 88 xj with a np 242 TC in it. iv been reading alot of fourms about the diffrence between the np 242 and np 231. every so often someone posts that if you have a locker in your front axle it should be selctiable but never goes into why. the xj im buying have a aussie lunchbox in front. im wondering why a lunchbox locking upfront is bad for the np 242.
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np242 with lunchbox?
- Thread starter njxj4x4
- Start date
- Location
- Sandy,Oregon
Because the full time option in the 242 is for street use. Problem is when power is applied to an auto locker it locks and having the front locked is not a desirable thing on pavement.
It will be fine as long as you don't drive on the road in 4wd.
It will be fine as long as you don't drive on the road in 4wd.
- Location
- Sandy,Oregon
You can use 4wd just like you would with a 231. Basically you just lose the fulltime function.
Some people do drive around like that but IMO its not safe.
FWIW I have auto lockers front and rear and I only use 4wd to get unstuck, driving on the road in ice and snow with them sucks.
Some people do drive around like that but IMO its not safe.
FWIW I have auto lockers front and rear and I only use 4wd to get unstuck, driving on the road in ice and snow with them sucks.
- Location
- Sandy,Oregon
The t case will still be able to differentiate the front and rear output so it won't exactly be like part time but basically you do lose the function of driving your Jeep around like a Subaru.
As I said some people still drive that way so I guess its up to you if you feel comfortable with the front end locking and unlocking on the street.
As I said some people still drive that way so I guess its up to you if you feel comfortable with the front end locking and unlocking on the street.
muddypunk
TOOL
- Location
- Coupeville Whidbey Island washington
Put a disco up front with a posi-lock and then you still retain the part and full time because with the posi-lock your right axle will be disengaged until you pull the lever and lock it up.
- Location
- Rainy side of Washington
Might just be me, but I think a 242 with a pair of LSDs would be awesome. Not sure I'd do auto lockers with one though.
- Location
- Patterson, Ca
If the road is icy, 4 part time is fine, otherwise who needs 4wd on the street? My xj had a 242 and I never once had a desire to put it in 4 full time? I think the disco is a horrible idea, swap in a weaker 2 piece shaft, so when it breaks at least you still have 3 wheel drive? I had a spartan up front and it worked great. If road conditions are bad enough you need 4wd, the locker up front won't hurt anything. The locker in the rear however can lead to lots of slideways action.
- Location
- Virginia City, NV
Epic
- Location
- Rainy side of Washington
that thing is going to be a holy terror :wow:
Flyfisher
NAXJA Forum User
- Location
- Billings, Montana
"If the road is icy, 4 part time is fine, otherwise who needs 4wd on the street? My xj had a 242 and I never once had a desire to put it in 4 full time? I think the disco is a horrible idea, swap in a weaker 2 piece shaft, so when it breaks at least you still have 3 wheel drive? I had a spartan up front and it worked great. If road conditions are bad enough you need 4wd, the locker up front won't hurt anything. The locker in the rear however can lead to lots of slideways action."
This may be true for some parts of the country, but here in Montana, there are lots of times when the roads are part icy with other parts bare pavement. The full-time 4WD is perfect for those situations. It's also nice to have 4WD to help get going at traffic lights on hills, from stop signs on hills, etc.
I agree though...putting in a disco axle is a horrible idea.
This may be true for some parts of the country, but here in Montana, there are lots of times when the roads are part icy with other parts bare pavement. The full-time 4WD is perfect for those situations. It's also nice to have 4WD to help get going at traffic lights on hills, from stop signs on hills, etc.
I agree though...putting in a disco axle is a horrible idea.
- Location
- San Diego
I used to have an auto locker in the back and a truetrac up front and it was great the ont time I drove it in some light snow. Now that I have auto lockers all around the full time is useless to me. For the most part anyway.
Anyone want to trade me my 21 spline 242 w/ SYE for a 231 w/SYE?
Anyone want to trade me my 21 spline 242 w/ SYE for a 231 w/SYE?
Built2Flex
NAXJA Forum User
- Location
- d
I don't believe that is an attractive deal for anybody.
- Location
- San Diego
That was sarcasm there. And considering the tone of this thread I would beg to differ about that trade. And it is definitely a very attractive deal.....
For me!
For me!
Last edited:
Built2Flex
NAXJA Forum User
- Location
- d
So it wasn't sarcasm then....
- Location
- San Diego
I meant I as sarcasm. But if someone said hey that is a good deal and asked me about it I would be interested. You're reading way too far into this.
the xj im getting has a ford 8.8 rear with lsd and dana 30 with aussie lunchbox up front so the full time funtion is useless for me now? im not too worryed about using the full time funtion but here in NJ we been getting some crazy weather the past couple years would be a nice thing to use if it starts getting hairy out. im already saving up to get air lockers for front and rear and a on board air system
- Location
- Sandy,Oregon
Once you get selectable lockers it will work fine.