Nice CJ! Look here for info on the QT case.

http://www.jeepforum.com/forum/showthread.php?t=680391

and

http://www.jeepforum.com/forum/showthread.php?t=674074

It's a great TC. Like anything, it need to be maintained.

You can go with the D 300 if you get an adapter from some place like Advanced Adapters.

 

Thanks for the help, I think I will keep and maintain it. At least until I find and build my full width 1-ton axles. It doesn't have the low range box, but workks great and when it locks in, it really locks in. The guy I bought this from also just put in a custom double carden driveshaft in the front after installing the lift. So I think messing with a swap (axles, adapters, and driveshafts) is a bit much for now. Also, I keep reading about getting the right TC oil for this. What brand/type do you recommend?

 

It doesn't have the low range box, but workks great and when it locks in, it really locks in.

I was going by this, not the model year.

 

I had a 77 Jeep Cherokee Chief with Quadra-Trac and loved it.

sprkplug is correct that proper maintenance is necessary.

1. Proper fluid for Quadra-Trac
2. Grease drive shafts double what is required for time and/or mileage
3. Same tires on all four

Good Luck & Have Fun!!

 

You either need the original quadra-trac oil or TCL-1 from Crown Automotive is a duplicate of the factory formula and comes in quart bottles. Two bottles are more than enough to fill a Quadra-Trac. If you'd rather have part-time 4wd Mile-marker makes a conversion kit.

 

This link will give you more info on the Quadra-Trac

http://www.jpmagazine.com/techarticles/23658_original_jeep_quadra_trac/index.html

 

Source for TCL-1 (Quadra-Trac Fluid)

http://www.4wd.com/productdetails.aspx?partID=11153

 

My 78 was a quad trac loved it ,then the chain busted,was cheaper to go standered and d-300,is yours the low range model[lever beside drivers seat in the floor]

 

My 77' CJ-7 has the Quadratrac xcase. Works well for mild off-road use. Great in the snow too. The Quadratrac xcase gets a bad rap mostly due to lack of maintance. Most of the shop manual cover the basic maintance, but basically you need to drain the case and then check to see how loose the chain is. If too much slop the chain needs to be swapped-out. As I recall, you don't need to drop the case either to swap it out as well. Another option is the Mile-Marker part-time kit. Gives you part-time set-up and kit comes with a new 16% overdrive chain. Helps with fuel eco and wear on front end parts too. Hope this helps ya.

 

I would prefer a part time case like a D300, but I am guessing the tranny is to long to swap it in. Is there any easy ways to swap in another TC and lockouts to make it part time without getting into buying a lot of extra parts (i.e. adapters, customs driveshafts etc.).

Not really an easy way from a swapping perspective. The part-time kit that was already mentioned would be the least amount of headaches.

The other route entails raiding a dead 4wd Chevy TH400 for the tailhousing assembly and swapping it on so you can run any of the New Process 6-bolt pattern transfer cases (including the Dana 300), or finding a good 4wd Chevy and swapping all the guts into your AMC TH400 housing. Doing this will also give you a centered rear transfer case output, which will require changing the rear axle (although some people with low lift run an angled rear driveshaft with a double-cardan).

I belive that there are blingy/expensive QT TH400 rear output conversion kits out there now, but they are essentially the same thing as the Chevy tailhousing swap I mentioned. When faced with any of that, the part-time kit usually becomes more attractive. :teehee:

The guy I bought this from also just put in a custom double carden driveshaft in the front after installing the lift.

I believe its supposed to have a double-cardan front shaft anyway, but I may be thinking of FSJ's.

 

Without the low range reduction unit you don't have a BW1339, you have a BW1305. The good news is that the planetary gear set of the low range unit is a bolt-on addition. Go to a junkyard and find one off of the thousands of full-sized Jeeps running this case and bolt it in. The earliest versions used a push/pull cable to engage low range, but later on they switched to a small lever on the floor with a linkage. I'm willing to bet that if you maintain this case and add on the low range unit you'll love it and never think of swapping it for something lesser.

http://www.novak-adapt.com/knowledge/quadratrac.htm

 

I believe the 78 came with the low range unit.

Easy to tell. The 78 has the low ranger shifter on the floor next to the drivers seat.

cibholder03, if you don't have the low range, let me know. I have a spare.

 

Also, just FYI, you can purchase a part time kit for the q-trac that incorporates lock out hubs, the use of regular ATF, a new chain, etc. These are a fantastic transfer case, and only receive a bad rep due to lack of maintenance. Here is a great site with ton's of information. http://jubileejeeps.org/quadratrac/index.htm Let me know if you need any more help.

 

I've had some experience with the part time kits. They are very strong and easy to install. They eliminate the need for the stock fluid, aid in steering, and will eliminate much of the wear and tear on the front end components.
Do spend a few moments and insure the vacuum locking system works. Many folks do not realize theirs have problems and can't understand why they lack traction.

 

Thanks for all the links and help. Also, I checked and no lever, so it must be the BW1305, so I will be looking for the low range reduction box ASAP. After I bought it this past Tueday and got it home I went on a really good shake down run and everything is solid and this transfer case works very well. After calling the previous owner and asking a few more questions, I realized that he replaced almost everything that you typically might have problems with due to age when he did the frame off restro a few years back. This thing has an all new brake system, the custom driveshaft in the front, the 4" Pro Comp lift only has about 100 miles (explains why it is still a little stiff) and replaces all the steering parts.

I forgot to ask the previous owner, but it has power steering but has a smaller belt that bypasses the PS pump on the serpentine system. I wondered why he did this and now figured out why it was so hard to steer with PS. Anyone know what belt to get for my 78 CJ7 with PS? I have been working at the Police Academy 6 days a week and haven't had much time to get under it and mess with it, but keep getting pleasantly surprised for what I payed for it (lets just say I feel like I stole it from him and yes, he knew what he had and did all the previous work including the frame off restro, his wife told him she wanted it gone this week. I just happened to be the first one to answer the ad).

 

I forgot to ask the previous owner, but it has power steering but has a smaller belt that bypasses the PS pump on the serpentine system. I wondered why he did this and now figured out why it was so hard to steer with PS. Anyone know what belt to get for my 78 CJ7 with PS?

That Jeep shouldn't have a serpentine belt system. He replaced all the other pulleys to run a serp belt?

Post a picture of the accessory drive system if you can. We should be able to spot what's been done pretty quickly.

 

Sprkplug, thanks, to be honest I don't know what a fair price is so shoot me price and I will dig in my piggy bank. I again called the previous owner but he had no clue because a buddy of his put the motor and accessories back together after the frame off and he made it clear he was not a "motor guy" Here they are, tell me what I have:

Not a great picture, but here it is

 

Sprkplug, thanks, to be honest I don't know what a fair price is so shoot me price and I will dig in my piggy bank. I again called the previous owner but he had no clue because a buddy of his put the motor and accessories back together after the frame off and he made it clear he was not a "motor guy" Here they are, tell me what I have:

Give me your zip code and let me figure out a shipping cost.

 

There's no serpentine belt there. You have regular v-belts. Just go to the store and ask for the power steering belt for your vehicle configuration. The missing belt makes me suspect that the pump probably isn't going to turn out to be functional when you hook it up.

 

The missing belt makes me suspect that the pump probably isn't going to turn out to be functional when you hook it up.

Check the pump for fuild,(open the small black cap on the top). Also see if the hoses that run off the pump go to your steering box down on the frame. If all there, you'll need a belt that would go between the outer pulley on the water pump,(behind the fan) to the pulley on the pump. Be sure the pullies are in line, or the belt will wear out quickly or the belt could jump the pulley.

 

You're also missing a vacuum hose on the vacuum advance.

 

Sprkplug, zip is 45887

Pathkiller, where's the hose attach and where's it go to (good eye, I know the pic isn't the greatest)

 

Sprkplug, zip is 45887

Check your PM

 

I let a low range box go for $100 including shipping.
Couldn't talk the guy into taking the rest of the 1339!
He just DID NOT want it!

I think I have one or two more around here somewhere... Still in the vehicles though...

 

PamementPounder, I agree I am going to start messing with it. I am working on a MC2100 carb problem right now, but he had another guy reassemble the frontend , but I can't imagine him not reinstalling a belt? I mean who doesn't want PS? I suspect that it may need a little work.

 

thanks i don't have low range and my renegade don't have a ranger shfter on the floor .then i want all of spares that can be uprade .

You realize the post before yours is 3 years old, right.
If you have a new question, or need help you didn't find in a search, I would start a new thread,
On edit, I see your from Italy. Welcome.

Welcome to JF, BILL