T18 identification help

hi guy's i got and old man who offered me a t18 that suppose to came from a Jeep cj. It's a t18 with the wide ratio (6.32, we counted the number of turn in the input vs the output on first speed). It's the short shaft version (no 5" spacer between bellhousing and trans) and i would like to put it in my jeep. The guy doesn't have the transfest case and the adapter for it. I'm not familliar with transmission so before spending 200$ on it i want to make sure i will me able to fit it on my amc 360. By now i already have a t18 in my jeep that need a rebuilt (fourth speed popping out under force, and the third won't hold on compression). Also i have the 4:1 ratio on my t18 so that would be an upgrade for me.

The transmission i'm looking to buy seem in perfect shape (about 1/32" turn of backslash between in/output). Also the shifter don't have any loose on it like the one in my jeep now).

The only label i was able to read is T18-1b0. Reverse speed is up and right


So the question, can i use the t-case and adapter on the t18 that's on my jeep with the T18 i'm looking to buy?

 

Your Pictures never made it..........Since 3rd & 4th share a common Synchronizer perhaps that is all you need to fix your old one?.......although I understand the need to get the 6:32 gear. The Jeep T-18 version is a little different from the more popular Ford version , so you really need to match up the two and make sure what you have. The PTO cover is also on different sides. Reverse over and up is an early version prior I think to 1978.

Pull the shifter cover off if you really want to see the condition of the innards..........1st & Reverse sliding gear , along with the reverse idler and counter shaft below take the most beating since those gears are non-syncro. Not uncommon to see missing teeth........The front input shaft gear inside the case will have 17 teeth meashing with the counter below if it is a 6:32 gear.

Pictures............

 

here is a link of a 1960's version t-98, I mistook it for a T18.

Gobs of pictures here, hope they help you.

http://www.earlycj5.net/forums/showthread.php?107210-Vintage-T18-D18-and-Overdrive

 

YES ! The transfer case adapter plate is the same between all Jeep T-18's.
They fit Jeep big hole (4" index bore)transfer cases
The Jeep T98 ada0pter plate is used for small hole (3-5/32" index bore) transfer cases.

If you decide to rebuild your 4.01 ratio T18 to become a 6.32 ratio version,...
I have a complete set of Ford T-18 @ 6.32 gears that I could sell. (Ford T18 guts)

 

I don't think that will work unless you have the '70-79 Jeep six-cylinder J-truck input shaft (PN 941110 or 8130259 in '79). You need an input shaft from a T-18 that uses the T-14/T-15 bell and the plate adapter. If you have that, it will work.

 

Well I do have a long Jeep 17 tooth (6.32 ratio) maindrive gear.
I would have to look at the books to see what length maindrive he actually needs for an AMC bell with 5" adapter plate.

Not really sure if Johny plans to use the 5" thick adapter plate or what.

 

Other than 1976, I'm sure that all the close ratio T-18s used the 7" stickout main drive gear, which accommodates the T-14/T-15 bell and plate adapter. He could have the 1976 transmission that uses a bell with no plate, and in that I case I do not know what parts will work.

My understanding is that the '71-75 close ratio T-18 has the same dimensions and uses the same adapters and bell as the wide ratio T-18 used in the 258 J-trucks and Wagoneers in the same era.

 

Borg Warner T18 stick out is always 2-5/8" shorter than the OAL of the main drive gear.
The T18 he mentioned describes the short stick out.
That leads me to believe it's from a 1977 or later CJ.
In that case the transmission he located would have 7-3/8" stickout / 10" OAL maindrive gear.
The Jeep 10" main drive gear has a very long pilot tip that can be shortened up if need be.
That particular Jeep T18 (from 1977-1979 CJ) is near ideal for mating to GM bellhousings like the Dauntless 225 without an adapter plate.

That indicates a pre 1979 T18 such as was used in CJ's from 1977 and 1978

 

It seems likely that the T18 transmission you found is the very desirable 1977-1978 CJ version.

That T18 will have a 1-1/16" diameter main drive gear and it has a seal front bearing retainer.
Your current main drive gear will be 1-1/8" diameter and I fully expect that the front bearing retainer is not sealed.

 

Picture dont work?

here another try, can you see the picture now?

As i said transmission suppose to come from a jeep. If i compare the bellhousing patern to amc v8 patern seem to be the same.

 

Borg Warner # T18-1B indicates a close ratio 4 to 1 transmission.
This particular transmission appears to have been previously modified.
The T18-1B case itself is from a 1971-1975 Jeep with either 6 or 8 cylinders.
From what I can tell the T18-1B originally was equipped with a 12 OAL main drive gear.
This one obviously has the 10" OAL maindrive gear.

You should encounter no problems swapping parts with your existing T18 excepting all the gears.
All gears will be different. All other parts virtually identical.

 

No trully a 6.32 ratio, we have mark the input and output shaft and we count little more than 6 turn on input for 1 turn of the output on first speed.

It's not in my plan the transplan gear to one the other transmission. Just want to use the T18-1b i got with the transfers case that's on my jeep now.

 

That's what I'm saying.
Ihe info I have indicates this T18 1B was previously modified to become a T18 1J.
It is set up like a T18 1J.
The T18-1J is the very desireable 1977-1978 transmission from CJ with 6.32 gearing and short maindrive.

It's merely a matter of identifying by using various Borg Warner and or Jeep part numbers.
Is there a Jeep I.D. tag on one of the shift tower bolts ?

 

Mmm... Somehow I think that the casting number in the side of the case does not tell you much, other than it's a T-18. We have been through this before on the FSJ boards, and the conclusion was that the casting number is inconclusive.

Looks like the AMC pattern bell to me. Six spline output... I can't recognize the back of the case without the adapter, but I think there's no doubt here that your existing TC adapter will bolt up to that case.

I think you are good to go. The overall length is a little shorter than your transmission, so there may be some adjustments to make.

 

Thanks for bringing this up.
AFAIK that could certainly be true and I suspected that info myself.
I was merely going on some old Advance Adapter info concerning the Borg Warner numbers.
So perhaps it is in it's correct original case
The Jeep tag numbers would tell us much more...

The back bolt pattern appears correct for accepting the transfer case adapter plate.
It is missing the large thick bearing "spacer" that goes between the bearing and the main shaft gear.

 

Thank's Tim for you're help.

if it's shorter it's better for me cause i have lot of angle on my rear d-shaft.

 

The T-18 shown in the pics is a '77-'78' early '79 CJ T-18. depending on which T-18 you have now you will most likely need to change the pilot bushing and possibly the clutch disc. The bellhousing on that transmission is the correct one to bolt to an AMC engine. That case has the correct bolt pattern for a Jeep T-18 to 20 transfer case adapter. I would suggest replacing that nasty output bearing though.

 

There are actually several different adapters to go between a T18/T98 and a texas pattern 18 or 20 case. There is both a small hole adapter for a small hole 18 as well as the 20 adapter with the 4 inch hole. A scout adapter clocks the t-case down farther and is generally not preferred but does give more room for shifter clearence. There are also differences in the case bolt pattern. There are also a couple differences to the pockets for the shaft stickout. All can be drilled out/altered to fit but can really be a pain to make work. Always best to dry fit before paying cash for a part that might not be what you actually need. Just another one of those wife's tails that "they are all the same"