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-   -   ALH 1949 willys cj3a (http://forums.tdiclub.com/showthread.php?t=486421)

Millennium Falcon February 15th, 2018 17:10

ALH 1949 willys cj3a
 
I am planning of putting a VW diesel in the jeep. Im in the early stages but I think it should be a good swap. I started working on the adapter plate. I have the template made, I just need to finish it and bolt it all together check the alignment before I start making chips.. It is physically the same size as the l-head. It has obvious performance gains. I think it will be a good fit. The plan is to make the back of the VW block/crank mimic the L-head. The adapter is pretty simple and once I get the flywheel depth figured out I will start making the crank adapter. If all goes as planned I wil use the stock willys bell,clutch,starter(gear reduction) and stock the t-90 trans.
Here is what its going in.....


(I cant get my IMGUR pictures to post in the correct size. They take up like 10 times the normal size)

Exenos February 15th, 2018 19:45

you need to resize the picture in imgur once you upload them. Need to click on the pencil thingy. I always just change the largest dimension to 1000px and leave it at that.

1.9ZOOK February 15th, 2018 21:30

Cool Swap!

Millennium Falcon February 15th, 2018 23:13

Let me try uploaded a picture now with exenos's advice.

https://i.imgur.com/BZAOHPm.jpg?1



https://i.imgur.com/EI06pVO.jpg?1

https://i.imgur.com/wcf7jj6.jpg?1

I used a dummy shaft and a bearing retainer to help me center the crank to the trans.
https://youtu.be/iYSohDaMOvs

jimbote February 17th, 2018 06:40

nice project! i would bolt a dial indicator to the crank and rotate it inside the bell bore to get center ... the rod in the pilot bore might seem like an accurate way to detect center but just a tiny angular error at the crank can equal way over spec at the bell bore

Millennium Falcon February 17th, 2018 08:26

What is "spec" I am at .0015-.0020 at the bell bore right now.

jimbote February 17th, 2018 08:28

Quote:

Originally Posted by Millennium Falcon (Post 5381681)
What is "spec" I am at .0015-.0020 at the bell bore right now.

what is your measurement method ?

Millennium Falcon February 17th, 2018 08:29

The hardest part at the moment is clamping the bell to my adapter to get it centered. Im not drilling any holes yet. I may lay the engine on its nose to remove gravity from the equation. :) An extra set of hands would be helpful.

Millennium Falcon February 17th, 2018 08:35

Quote:

Originally Posted by jimbote (Post 5381683)
what is your measurement method ?


I used two different dial indicators. I indicated the crank like you said then the did the same thing with the dial indicator attached to my test rod as well to compare my findings. I got about a extra 1.5 thousands out on the rod... but im still only at like .003-.004 all the way out at the trans. Im happy with that.

jimbote February 17th, 2018 08:41

any centering method that does not incorporate rotating the crank in reference to the bell bore has inherent inaccuracies... very simple rig, you can borrow mine for a security deposit

jimbote February 17th, 2018 08:42

Quote:

Originally Posted by Millennium Falcon (Post 5381686)
I used two different dial indicators. I indicated the crank like you said then the did the same thing with the dial indicator attached to my test rod as well to compare my findings. I got about a extra 1.5 thousands out on the rod... but im still only at like .003-.004 all the way out at the trans. Im happy with that.

sounds good

Millennium Falcon February 17th, 2018 15:28

Do you know what the allowable run out is at the crank/flywheel? The willys manual say .002 Not sure about the VW

Quote:

Originally Posted by jimbote (Post 5381690)
sounds good


jimbote February 17th, 2018 16:12

Quote:

Originally Posted by Millennium Falcon (Post 5381774)
Do you know what the allowable run out is at the crank/flywheel? The willys manual say .002 Not sure about the VW

your numbers sound fine.... iirc the radial limit is around .007 or .014 total but that's from a guide for centering a v8 bell housing

1.9ZOOK February 17th, 2018 18:55

I shot for 0,and ended up around .005.
It's been going fine for 2000 miles.

Millennium Falcon February 18th, 2018 10:57

Nice! Any vibrations or issues?
Quote:

Originally Posted by 1.9ZOOK (Post 5381803)
I shot for 0,and ended up around .005.
It's been going fine for 2000 miles.



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