tranny swap???

[norcalxj]

im going to swap my stock automatic tranny out with a t-18 and i was wondering what parts i would need so my jeep runs good, and if someone has swaped to a manual was it hard and expensive? my jeep is a 89' 4.0. thanks

Bryan

[norcalxj]

no one can help?

[rockwerks]

Why would you wish to drop out one of the most realiable trannys to put in something less...why go from an auto to a manual?

just off hand you will need to get rid of the flex plate and get a flywheel, tranny and adapter, new drive shafts.....maybe more

[KarmirXJ]

Originally posted by norcalxj
im going to swap my stock automatic tranny out with a t-18 and i was wondering what parts i would need so my jeep runs good, and if someone has swaped to a manual was it hard and expensive? my jeep is a 89' 4.0. thanks

Bryan

you spending to much time on POR is it?:rolleyes: you got a nice smooth shifting tough auto tranny with a good OD why the Fawk would you wanna replace it with a shit box? Have you ever drivin something with a T-18? the thing shifts like a damn tractor. very inconviant especially if its a Daily driver, and something you get sick of very fast. a T-18 is something you put in a buggy or a beater... not an XJ! if you want a manuel for a daily driveronly way to go is either AX15 or NV4500 nice smooth crisp shifting.... soots the XJ dont it?:)

[M. Lake]

I would like to know a parts list. I have a '93 with 4.0 and the AW-4. But with the low HP and TQ rating of the AW-4, I am switching over to a SM465, which will need a complete rebuild. (it has been through a lot) I know if I can get a '80-'86 258 bell for a SR4, T4, or T5 and have the tranny bolt up to that. But have not seen the mechanical of a manual XJ or MJ, and would need to find pieces from peddle to the bearing fork.

Will have around 400 HP from stroker and turbo. AW-4 can handle around 300. But with low gears, big tires, and extra weight from cage, and lift with heavy axles. I can see that POS aluminum case opening up and spilling its guts once the little peddle on the right touches the floor.

[KarmirXJ]

Originally posted by M. Lake
Will have around 400 HP from stroker and turbo. AW-4 can handle around 300. But with low gears, big tires, and extra weight from cage, and lift with heavy axles. I can see that POS aluminum case opening up and spilling its guts once the little peddle on the right touches the floor.

its rated at 335 lb aprox...
with low gears it only matters where it is positioned... your tranny will only get 2.80xlb now since your xcase is in back of it and you have 4low... it will be multiplied by 4lowX2.80Xlb. you get what im trying to say... so the thing that gets the worst ratios is your axles.they take the most beating. just because your geared lower has nothing to do with the tranny. only tires & weight..
and one more thing he doesnt have a turboed stroker...


why in gawds name would you need a stroked turbo in a 4x4? :rolleyes: if you trying to beat other cars around the mall then yes you prolly need it, but I bet you cant beat a bone stock XJ with 29s thats for sure. you guys just have way to much time on your hands

[M. Lake]

More Power errr. At the time, the stroker sounded like a good idea. After market over sized parts were the same price as the stock sizes. Blew up stock motor, and got a donor block that needed rebuilt. My motor was smoking bad, and needed a serious valve job. All the work and price was about the same, and it all needed to be done, why not go bigger. I am also taking my COG into effect on this. With the lift, it will change my COG, switching to a steal tranny and case (IIHO) will bring down my COG.

As for the racing around the mall, I have been thinking of getting a 4 dr, slaming it to the ground, putting 22" on and making it pretty. Then slaping a small block 350 in, with a MPI kit and twin turbos, with an AWD case instead of a 4wd case. And 1/4 mile it. (of course it was just a thought)

[XJTripp]

Try Advance Adapters and Novak. They both have good sites. If you can use a hydraulic clutch maybe you should salvage the linkage from a 90's AX15 equipped XJ.

I sympathize with you because I want a manual and could only find an Auto at the time of my purchase in my price range- had to find something in a hurry.

With 38's I wouldn't give a darn about a little extra throw on the shifter and no OD. The T-18 fits with your mods better than an AX15. Heck get a Hurst shifter or something. With 5.13's locked in your Dana 44 something tells me this is not a daily driver and maybe you need the 6:1 low gear.

[Beezil]

the t-18-A is popular again?

I didn't think people were swapping those in anymore?

the 6.32 granny would be nice, but the lack of synchos would bug the shit outta me.....

[rockwerks]

I wonder what the percentage of autos to manual is on the rock crawl circuits......I must think the ratio is around 20:1 or more

[norcalxj]

i already have the tranny and bellhousing and adapter for my t-case. my jeep isnt to much of a "daily driver" (look at my sig) so i dont give a crap about how it shifts. the t-18 is way stonger than my auto and it has a 6.32 first gear so why dont you guys just tell me what i need to do the swap and stop talking about your gay automatics and ax15. autos and ax15 dont mix with fullsize axles with 38's to good

[rockwerks]

so i dont give a crap about how it shifts. the t-18 is way stonger than my auto and it has a 6.32 first gear so why dont you guys just tell me what i need to do the swap and stop talking about your gay automatics and ax15.

Gee such a nice way of asking for our help.......have fun finding the info I really dont think anyone here is in your caliber....you seem far superior to us here...maybe you should take your question somewhere else....:worship::rolleyes: :rolleyes:

[M. Lake]

My auto is not gay, it has erectile dysfunction (ED). As for the SM465, that will utilize the bell housing off a T4, and be mated with a D300 (which is female), has plenty of stamina, but might need some Viagra, to get it going again.

6.55 first gear with out sincros. What are sicros any way, and what do they do? TIA

[Eagle]

Originally posted by M. Lake
6.55 first gear with out sincros. What are sicros any way, and what do they do?

Synchros ... synchros. Short for synchronizers, as in "synchromesh transmission." The synchronizers are those thingies that allow you to shift gears without hearing a loud and very unsettling "crrrruuunnnnnch!" ... of ten followed by an even more unsettling "BANG!"

[Eagle]

Originally posted by norcalxj
im going to swap my stock automatic tranny out with a t-18 and i was wondering what parts i would need so my jeep runs good, and if someone has swaped to a manual was it hard and expensive? my jeep is a 89' 4.0. thanks

Bryan

To do the swap, you will need a flywheel, bellhousing, clutch and clutch linkage. As noted, you will almost certainly need custom length drive shafts. If you have 4WD you will need to find a way to mate your T-18 to a transfer case ... either an XJ t-case or something else. You will also need to find a way to mount the CPS or your engine won't run at all. The CPS on your XJ mounts through a hole in the bell housing and is triggered by the flywheel/flex plate.

That's what you'll need to do the swap. You can probably find info on the Advance Adapters and Novak web sites.

However, in your post you wrote something about " ... i was wondering what parts i would need so my jeep runs good." I suspect your mind is too made up to be confused with facts, but IMHO the concept of using a T-18 transmission, which is almost stone age technology, is basically antithetical to the concept of "running good." You can undoubtedly make it run. Run "good" ("well") ... highly unlikely, not matter how much money you throw at that slug of a transmission. Why don't you look at an NVG 4500?

[KarmirXJ]

Originally posted by xjnation
Gee such a nice way of asking for our help.......have fun finding the info I really dont think anyone here is in your caliber....you seem far superior to us here...maybe you should take your question somewhere else....:worship::rolleyes: :rolleyes:

ya norcalxj ... try THIS (www.pirate4x4.com/forum) those guys know your kind of stuff. I guess we're not much of a help on this topic... and Im sure they can help you out with whatever you need.






















after their done raping your:rolleyes:

[norcalxj]

Originally posted by KarmirXJ
ya norcalxj ... try THIS (www.pirate4x4.com/forum) those guys know your kind of stuff. I guess we're not much of a help on this topic... and Im sure they can help you out with whatever you need.

that the most helpful reply anyone has gave me so far! thanks

i tried over here first cus i thought this what the "hard core xj site" but its the "how to make your jeep drive on the street and look pretty site"

Bryan

[Jes]

:cry:

[Stoney]

hey jes.......... i thought your mommy told you not to cry in public.

[5-90]

OK - I just saw this one...

First off, you are letting yourself in for a fair bit of work. If you have your heart set on the deep first gear, I'd probably think NV4500 - MistWolf can help you with what you need to install it.

For a swap from an auto (I don't understand why, but I don't know what you've done to your engine yet, either!) you will need flywheel, clutch assembly, clutch master & slave cylinders, donor pedal and linkage, transmission, correct transfer case (probably easier to use an Atlas than a D300 if you have the option,) and expect to have new driveshafts made as mentioned above. Now would be a good time to do those yoke upgrades you were thinking about as well, and toss in the SYE kit since you ahve everything torn to bits already!

Mountings for the clutch setup should not be a problem (the firewalls for autos have plugs put in the holes not used) but you will find some of the spots you try to work in fairly tight - especially under the brake master cylinder when installing the clutch master. Expect also to have trouble with the transfer case shift linkage - which is why you are in luck thinking about the twin stick version of four-wheel drive. I'd also expect some crossmember fab or mod to take place as well.

This is all edjamacated guesswork (similar to a SWAG) since I've not done the conversion myself yet (and before you ask, I plan it as part of a restomod job anyhow, so I'll have room to work!) If and when you do the job, would you please document? I'd be interested in hearing how it went for you!

5-90

[norcalxj]

thanks for the good reply 5-90! i already got the tranny, bellhousing, and t-case adapter to use a A-II,D300, or a 231. i know that i will need new DL's and some crossmeber work done.

the main question that i need to know that no one has said any thing about is my computer and sensors. i know what everything else i need im just not sure what sensors need to be changed and i know i should swap computers but is it nessasary.

thanks

[KarmirXJ]

Originally posted by norcalxj
that the most helpful reply anyone has gave me so far! thanks

i tried over here first cus i thought this what the "hard core xj site" but its the "how to make your jeep drive on the street and look pretty site"

Bryan

Glad I can help!:D

[5-90]

Well, what year XJ do you have? The early "Renix" XJ's used a seperate TCU, so deleting the auto is simplicity, but later versions can be integrated with the ECM and may cause it to need to be swapped - and I can't answer that without more information.

Where in NoCal are you? I'm down here in San Jose, and may be able to put your discarded AW4 bits to good use...

5-90

[MrShoeBoy]

Originally posted by norcalxj
the main question that i need to know that no one has said any thing about is my computer and sensors. i know what everything else i need im just not sure what sensors need to be changed and i know i should swap computers but is it nessasary.

thanks

The CPS or crank position sensor normally mounts on the bellhousing and reads the noches in the flywheel to tell the computer the crank position can be relocated to the front of the engine if you buy a kit from HESCO which is very expensive. It replaces the harmonic dampener with their piece that has noches built in and a CPS sensor and bracket. As for the Auto tranny wireing, it has its own computer mounted under the dash on the passenger side which you can just unplug. The engine ECU has no control over the tranny shifting. I know because I droped my AW-4 for an AX-15 and pulled out the tranny computer. Over on Jeepsunlimited in the Speed Freaks forum a guy swaped an auto for a stick and has a write up on what he did.

Good Luck

AARON

[xj2k]

as far as the cps, it has to be pretty close to the stock location but does not have to be exact. If you buy an advance adapter bellhousing it should have the spot for it. I was too cheap to buy a bellhousing when I put a t-18 in my yj so I just cut a hole in the bellhousing and made a bracket that bolts to a bellhousing moutning bolt and the sensor. It works fine. Don't bother going with a np231 if you're running 38" tires and a t-18. It's a wimpy x-fer case. Also, don't listen to the rest of these left foot lazy people, the t-18 works fine off-road, is very strong, and is very cheap as well!