80km
50mph

I'm pretty sure I read that in the manual.

88 Laredo
5", 32" bfg's

 

Mine runs just fine at 80mph and up, can also get in & out of 4x4 at those speeds too with no probs. Of course I'm driving on snow,ice,mud or gravel. On dry hard surfaces it will start to 'buck' with too much traction. My rigs are in constant 4x4 for about 8 months of the year without seeing 2wd.
R.

I live in the land of ice & snow
Where my Cherokees run in FORTY BELOW !!

 

My 1986 owner's manual says that the transfercase can be shifted from 2wd to 4wd high or back to 2wd at any legal speed. I find that shifting is easier if you get off the accelerator when shifting./wwwthreads_images/icons/smile.gif

 

do all cherokees come with command trac?

whats special bout command trac?

 

There is also selec-trac, I have one of those too in my '86.
For daily driving and such we prefer the selec-trac. Just seems to turn and handle dry roads in 4x4 alot better. Again no probs. with 4x4 or shifting in&out at excessive speeds.
R.

I live in the land of ice & snow
Where my Cherokees run in FORTY BELOW !!

 

No, there are 2 kinds of 4wd systems that were offered in XJs (Notice I wrote "were" because XJs are now vintage, out of production Jeeps).

Command Trac is a part time 4wd system (came with either NP 207 or after 1986, NP/NV 231 transfercases). This system has no center differential in the case. In both transfer cases, the front and rear driveshafts are locked together in both high and low ranges. This system cannot be driven on dry pavement because of driveline bind during turns.

Selct Trac is the full time 4wd ystem. The early Select Trac cases were the NP 228 and 229. These cases have a differential action in the case for 4wd high range running on any surface, including dry pavement. In low, the differential is locked. Later Select Trac XJs have the NP/NV 242 case. This case has a full time and part time 4wd hi selection. The 4wd high part time mode locks the center diff, making the system similar to a Command Trac 4wd high range. Again 4wd low is locked./wwwthreads_images/icons/smile.gif

 

cool, lots info here,

so how do i find out on a vintge cherokee (88) if its select, or command? id guess that the newer select is the one i want?

Put on your set belt... I wanna try something.

 

How in the world do you do 80+ in snow,ice,mud,gravel??? That's not exactly what a transfer is built to do...../wwwthreads_images/icons/smile.gif/wwwthreads_images/icons/laugh.gif

 

Studed snows if he's smart or balls of platinum if not! I think command trac is just as good as select trac you just dont get the all time 4wheel selection, just part time, which is just great for me. If I want full time 4wheel I just take my 96 GC out.

YOU NEVER KNOW TILL YOU TRY

 

No studs yet, and thats how hi-ways and roads are made up here. With 8 months of winter you get the hang of it, I've been doin'it 15yrs now. It's a 4 to 6hr drive (on gravel or ice) to get between the smallest communities here. 12hrs to the big city. You want to keep moving.we have ice roads across 30 mile lakes & thru the bush hundreds of miles to the mines & realy remote communities.


I live in the land of ice & snow
Where my Cherokees run in FORTY BELOW !!

 

zukigoot,

There's a big emblem seal on the backside of them that tells which NP-2** case it is. If it's still in the original vehicle, the emblems on the side of the Jeep should say whether it was command or select. All MJ's were command trac. Most newer XJs are all Select. Select is generally preferred.

check out http://www.off-road.com/jeep/tech/xfer/ for more.

Just because I don't care doesn't mean I don't understand!
'88 MJ SporTruck shortbed
Rebuilt 2.5L: 40 over rings, 10 on crank, 10 on bearings
nearing 400K

 

Just to add to my previous reply... anybody interested in seeing the kind of roads we drive here, or just what an awsum place it is to own a jeep, check out www.ssimicro.com or www.hayriver.com . Check out the northern topics and links and you will get the idea of why I think the NWT is Jeepers' Heaven!!!
You can also check out my album in the 'JeepBarracks' gallery. A few pics from here & I try to keep it updated!

I live in the land of ice & snow
Where my Cherokees run in FORTY BELOW !!