pilot bearing

My T14 to T18 swap is being held up for a bit. The original (1974) T14 was mounted to the 1978 engine. Do I have the correct pilot bearing or do I need to install the later year range bearing? Am I correct in thinking the pilot bearing is a engine part, not a clutch part? Which leads to the question do I need a new clutch for the T18 or is the original unit satisfactory?

 

I would measure the diameter of the pilot and call Advanced Adapters or someone else experienced with conversions (I'm assuming this is a Ford T-18). If it is a Jeep T-18, measure the pilot of the T-14 and compare to your T-18. If same, use same (but new) pilot bearing.

 

If you have a Ford T-18, you need to either enlarge the OD of the pilot bushing or get a replacement from Novak, Advance Adapters, R&P, probably others too.

I believe you can reuse the clutch cover but you'll need to replace the disk with one that matches the splines on the Ford input shaft, eiterh a Ford product or from a Jeep with a T-150 (say a '76 CJ-5 with a 3-speed).

Nick discusses this in one of his earlier posts - search and ye shall find. (I'll find the link later if you can't).

 

I believe that I have the correct input shaft on the trans, the spline count matches the T14. Guy I bought the T18 from said he installed the correct CJ input shaft. Input shaft diameter is different though, I will double check when I get home from work.
As far as the clutch disk goes I see a difference of 1/16" on the listed clutches but the same cover part # for both. Any idea if that 1/16th (larger) is going to cause problems?
The adventure continues....

 

I double checked, it is a Jeep T18 but might be out of a FSJ. The input shaft stick out is about 6 1/2" so I think I have the right components. The pilot diameter of the input shaft is slightly smaller on the T18.

 

Steve, you do realize that the Jeep T-18 will not match with the T-176/T-150 bellhousing? If you have a Jeep T-18 with a short stickout (input shaft length), you'll need a Jeep T-15 bellhousing and the Jeep T-18 plate adapter. The Ford T-18 will bolt to the T-176/T-150 bellhousing, and the stickout will be correct. The CJ Jeep T-18 and Ford T-18 both have short input shafts, but they are different and can't be mixed. There are two FSJ T-18s, one for the I6 and one for the V8. The I6 T-18 has about a 3" extension or spacer on the bellhousing, and the V8 T-18 has about a 6" spacer. Here's a V8 FSJ T-18 - see how far the bellhousing sticks out from the case. The later ones (post '75?) actually had a spacer between the bellhousing and the case instead of that stretched bellhousing. http://www.gwamp.com/images/jeep/tranny.jpg
Nick is the expert about this - I'm just repeating what he wrote.

 

Tim, the T18 came with supposedly the correct bellhousing. The PO said he had set it up for his CJ. The trans/bellhousing has been drilled/tapped and a stud installed. Looks like an adaptor plate on the rear face of the trans also.
Sound right?

 

Yes, if there's no plate between the bellhousing and the transmission, it's probably an aftermarket kit fitted to a Ford T-18. A plate adapter is required between the transmission and the transfer case for both Ford and Jeep. The length of the input shaft is different between the Jeep and Ford T-18s, so one of the vendors (Novak, R&P) could probably tell you what you have just from that measurement. If the pilot bushing is the right diameter, the input shaft should go in with no slop, but turn easily.

 

Tim, (and fred) thanks for your help. No adaptor plate between the bellhousing and the trans I will call a vendor with the pilot/diameter and input length and that should settle that problem. My goal for my vacation is to get the drivetrain in, I better take the wife somewhere nice for dinner...

 

I did a little surfing and found that Hicks 4x4 made a short input shaft for the later FSJ transmission. They (Hicks) seem to be gone. Here's the link http://www.offroaders.com/info/tech-corner/project-cj7/project-cj7-transmission.htm

That'd be another way to get a short-shaft T18 with no bellhousing adapter.

 

I think I have it all together...it is a Jeep T18 w/ a input shaft from a 304/T150 combo. The Bellhousing is correct for my application per the PO (who blew up several T150's before seeing the light w/ T18's). Thanks to all, I will post again w/ the results.