93 Cherokee

Bad idea if you are trying to get better traction on the street. Full-time

4x4 is when you can engage the front and rear axle on the street. This is not possible with your transfer case. If you are just searching for better traction off road, and want both front wheels to drive, get the front locker. Please be aware that this will make steering in 4hi and 4lo very difficult.

Carl

You would need to swap in a nv242 SelecTrac Transfer case.

It was optional in '93 so if you find a donor all the parts should bolt up.

Good luck finding a donor in the salvage yards. I am having enough trouble finding a rear door.

But in true 4x4, all four wheels have power all at the same time, not just 2 wheels.

You would need locked differentials, but then you couldn't drive on hard surfaces.

Dick

So you are saying that in 4Lo, all four wheels are locked in?

In 4lo or 4hi the front and rear axles are locked together. If you have lockers front and back then all four wheels will be locked in, sort of. If you try to turn the outside wheels will free wheel or the inside ones will skid. If you have one of those full time rigs, then in 4lo, if you have it, the same applies. If all four wheels were actually locked together, then the only direction you would be able to go, is straight ahead.

Earle

I know that you can go more than straight a friend of mine has a 77 chevy with the 203 transfer case, the one that DOESNT shift out of 4hi and you have total traction to all 4 wheels (yes this isnt good in the summer on pavement either, it does make noise when turning)

The SelecTrac (nv242) case has the options of 2WD, Part Time 4WD, Full Time

4WD, Neutral, and 4Lo.

The center differential is locked in PT 4WD and 4Lo as I recall.

The Full Time 4WD allows normal differential operation on dry pavement.

I am sorry to be the one to burst your bubble but you do not really seem to comprehend how 4x4 works....

Your 'friend' has a 'full time' 4x4 which does come in some Jeeps and can be used on paved roads without exploding parts. It has a center differential as well as differentials on each axle.

The problem with this is if you are stuck on ice, you can end up with only one wheel turning....

The 'part time' 4x4 system is designed to be used only 'part time' on dirt or snow covered roads. This locks the front and rear differential together so in order to turn a corner one wheel has to scuff the ground or something 'will' break or the t-case can explode like my old roommate did to his Cherokee driving on paved roads in 4x4.

The front wheels have to take a longer track around a corner than the rear wheels in any vehicle. This means if you have it in 'part time' with the center locked, one wheel 'has' to scuff the ground.

If you add lockers to the front and rear, then two wheels have to scuff the ground when you turn. This makes taking corners 'very' tricky and will turn say a 3 point trail turn around into a 10 point or more.

The new Jeep with the front and rear lockers have switches to turn them off so you can do other than drive in a straight line.

Putting a full time locker in the front makes for a trail rig only and not a very good one at that unless you can unlock the front hubs. Then you can simply get out and unlock the hubs when you want to turn a corner or turn around on a trail.

Now I am really going to mess up your brain here....

With a normal Jeep and part time 4x4 and open differentials like I have, you can end up with one front and one rear tire turning if stuck on ice, however due to the nature of the differential, you can hit the brake pedal to load up the spinning wheels and Bingo, have all 4 spinning and away you go.

This takes a bit of practice. My Jeep owners manuals say to use the emergency brake to load up the spinning wheel, but I have better luck with hitting the pedal to load it.

This old trick works because both wheel see 'equal' power in the rear or front axles. If one is spinning on ice, it needs almost no power to do this so the same almost no power gets to the other wheel and it stays put.

If you use the brake to slow the spinning wheel, the power needed to fight against the brake will get large enough to equal the power needed for the stopped wheel to break free from the ground. Bingo, you have 2 rear rooster tails and sometimes front ones too and away you go.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail > I know that you can go more than straight a friend of mine has a 77 chevy

I took one of those things apart once. The owner claimed it had "excessive play". Your friend does not have all four wheels locked together.

Earle

Honestly I just wondered if it could be done, but this thing hasnt got stuck yet, and I had to get out of the driveway through a 4 foot drift, this truck is all stock, even tires, still it went over and through it with ease, and that was from a dead start, because it was drifted against the front of the truck.

Like I said for having 225k on it I cant gripe, the 4x4 does work excellent now.

Like the quadratrack I have, when it gets stuck, it's STUCK. :) All it takes is a light application of brakes with a bit more throttle.

Tires are where you will find the most benefit with a fulltime 4wd. I like the Michelin LTX M/S on ice, but they clog up in clay. The AT Revo's I have on now work ok on ice and handle the muck much better. Way back when, the Pirelli Scorpions were amazing on dry and wet pavement, but seriously blew in mud, grass, or standing water.

Sure, just research lockers and limited slip differentials. You can add either to your Cherokee.

If I went with a front and or rear locker, I would want ones I could turn on or off. The open diffs are the best behaved for all round driving.

Mike

abomb69 wrote:

I'm just running a cheep set of Peerless Force 4 LT 235/75/15 They do really well I think, better than our 99 Jimmy did with the same set.