SR4 to T5

[mach1mustang351]

This should be a slam dunk but with my lack of free time I wanted to get a better pic of what I'm getting into here.  I got my new SX4 and the guy I got it from had a parts wagon sitting there with a T5.  I know the easy parts are the same, bolt pattern etc but is there any little things I should be aware of with this swap?  Thanks

[eaglefreek]

As long as they are both the same engine, you should be fine. The only difference I'm aware of is the input shafts between the 4cyl. and 6 cyl. engines. Make sure you get the shifter for the T5.

[mach1mustang351]

Yea I was going to have fair game at the whole car before he gets rid of it.  I would take the trans, hydraulics and the shifter.  I kind of thought the input would be different but as long as the pilot works a clutch can be figured out. 

[carnuck]

Rear driveshaft length may be a problem.

[eaglefreek]

Rear driveshaft length may be a problem.

Why? As far as I know the SR4 and T5 are the same length. When I had my wagon with the SR4, I bought a T5 to put in it. Never did install it, but they measured exactly the same length. According to Novak's site, the SR4, T4 and T5 are 15 1/4" long.

[carnuck]

I must be thinking of a different trans then. AX-15 maybe?

[mach1mustang351]

I must be thinking of a different trans then. AX-15 maybe?

AX 15 is definitely different as per my big Eagle.  but now that I think about it I changed T cases too and went with the 242 with the slip joint at the driveshaft.  I guess I dont know then

[captspillane]

An AX15 input shaft is 3/4 longer than a T5 and it has a different nose at the end, so it needs a different pilot bearing. The Advance Adaptors "NV3550" kit can be used with the AX15 as well. That is how to do it if you need to retain the original flywheel or clutch linkages, which is a necessity for AMC V8s and Jeep CJ's Mechanical linkages. In a 6 cylinder Eagle you also have the options of using the 4.0 flywheel and bellhousing. I have this information in the transmission threads.

I have SR4 to T5 swap photos and information in a thread in the 4cyl section. I just installed a T5 in my Iron Duke Kammback where an SR4 used to be. They are totally interchangeable. Same input. Same everything.



Here are the minor exceptions:
-A 4 cyl and a 6 cylinder uses the exact same hyraulic clutch system except for the pushrod on the slave cylinder. The 4 Cylinder pushrod is longer than the 6 cylinder pushrod. Yes you can just leave your clutch stuff alone and just slide the SR4 out and slide the T5 in. I currently have a 6 cylinder slave cylinder with a 4 cylinder pushrod in my Kammback, it is a definate yes on the compatibility of any individual part. The pushrod swaps out without having to disturb any clutch stuff or do any fluid bleeding.

-My T5, its engine mount, and its crossmember came from my 258 SX4. I had to flip the engine mount 180 degrees and move it to the back set of holes in the 6 cylinder crossmember for installation in the 4 Cylinder Kammback. All the exact same parts, just different orientation. AMC cars are awesome that way.

-The T5 has a bulge around the fifth gear that the SR4 does not. That bulge blocks a bolt hole. The T5 thus uses a bolt threaded directly into the aluminum case where the SR4 has a through bolt and nut. Same bolt, same location, just threads instead of a nut.

-The SR4 has a two bolt piece of metal that the support rod bolts to. That bulge in the T5 doesn't give enough room, so the T5 had a single bolt piece of metal instead. It doesn't matter. The support rod goes up and helps keep the front axle from vibrating, but I ran without the rod for years. Its not even important. I wanted to keep it in this Kammback anyway, so I just cut the SR4 version of the tab down to work with the T5. That will make sense once you're looking at it or if you look at the pictures in my other thread.