TH400 Torque Converter issue

[arhame]

Ok. You've got me on this one here.

I've never seen a spacer that fit's into the end of the crank and between the torque converter nose and the crank (am I describing this correctly?).

http://www.meangreenjeep.com/misc/Picture018.jpg

You can see the ring I am referring to sitting between the flexplate bolts and the flexplate. Hs there some type of spacer or adapter that sits inside the end of the crank?

Thanks a million for the post.

Aubrey

[FuzzFace2]

Ok. You've got me on this one here.

I've never seen a spacer that fit's into the end of the crank and between the torque converter nose and the crank (am I describing this correctly?).

http://www.meangreenjeep.com/misc/Picture018.jpg

You can see the ring I am referring to sitting between the flexplate bolts and the flexplate. Hs there some type of spacer or adapter that sits inside the end of the crank?

Thanks a million for the post.

Aubrey

It is hard to tell but I don't think I see one in the end of the crank. It is a thin sheet metal ring that presses in to the end where the big hole is.
You can measure the snout on the converter then do the same on the crank and see what the differance is. Now if you dont have one it is going to be tuff finding one as I hear dealers dont have them any more. Some have had the snout made to the TF size and no need for the ring.
Good luck on getting this fixed, if me I would of burned it to the ground
Dave ----

[arhame]

Strange. I'm looking through the Jeep assembly manual and parts catalog for my year and I can't find that ring anywhere.

I got busy with work and haven't had the chance to pull the transmission back out again, but am going to make it a point to get it done tomorrow. I'll check and see if anything is inside the end of the crank.

Approximately how thick should this spacer be?

I found two additional pictures that might show something.

http://www.meangreenjeep.com/misc/Picture016.jpg
http://www.meangreenjeep.com/misc/Picture017.jpg

Thanks again for the post

[arhame]

update:

Ok, as per reccomendation I measured the ID of the inside of the crank and the OD of the snout on the torque converter.

The ID of the crank is right at 1.800"
The OD of the snout on the converter is right at 1.700'

So, it's looking like the spacer/bushing might be the answer. What it appears is happening, is because of the difference in measurements between the two, the torque converter is never getting bolted centered with the flexplate, which is causing vibration. Enough, apparently, to eventually break the flexplate.

Thanks jeepsr4ever and fuzzface2 for pointing me in the right direction. I have a feeling that I'm finally on the right path to redemption. Or at least, until the next issue arises......

Aubrey

[jeepsr4ever]

That little spacer is part #J5352374 but is no longer offered by Jeep dealers. You may have to have something made up or search google. We could easily make this spacer for you as well but I think you would have $20 into it

[ol' school power]

We could easily make this spacer for you as well but I think you would have $20 into it

Considering the importance, it would be a bargain at twice the price.

[arhame]

Oh, I absolutely agree. Can't wait to get mine so I can get this thing running.

Thanks again

Aubrey

[jeepsr4ever]

Aubrey we need to nail the OD of the torque converter spud. Get me a clear measurement and measure a couple times :)

[arhame]

I'll run up to the transmission shop today and get the measurements.

I just went and purchased some new dial calipers, so this will give me a chance to use them for something important.

Thanks again,

Aubrey

[jeepsr4ever]

Alrighty! Got the right tool for the job