Sorry can't agree with that, if it was on the bottom it will come out of the pump when you pull the distributor. If it's on the bottom it has nothing to stop against..

 

Don't much care what you agree with...

 

ok thanks for that data. I seemed rare position as the rod was soblada inside and did not understand how to find the correct oil level . is easy to change position ?

 

And thats the exact reason why so many end up in the pan and why it was revised, thats an old photo, they don't revise photos normally.. They got it right on the FE which is the same type of design.

 

An FE and the other Ford V8s are different animals. On a Y-Block, the bottom is the correct position for that washer. When it is on the bottom, the drive shaft won't pull out and it cannot fall into the pan.

It simply doesn't work if you put the washer on the top. It will prevent the shaft from engaging the pump properly and it will prevent the installation of the distributor. - I know because I've been there and if you think about how it all goes together, it just makes sense.

 

But the principle is the same on the FE. If the washer is on the top of the shaft it bottoms out on the area of the block where the bottom of the distributor shaft engages that only allows for the shaft to move a small amount in the upward direction. If the washer is on the bottom the shaft can be moved upwards a few inches which lets it come out of the pump, it won't come out of the block but it will come out of the pump.

 

There is nothing for it to bottom out against if you put it on the top in a Y-block. It must go on the bottom in a Y. It doesn't matter how it is done with other engines.
Maybe it is an issue of semantics here, but there is only one way for the washer to go on the shaft AND for the shaft to fit properly in a Y-block - that is with the washer on the bottom (the oil pump end). When installed properly, it will not disengage the pump. Any other way and it just doesn't work. Go try it.

 

There is a ~6mm plug in the right side of the block where the dip stick should go on engines with rear sump. Of coarse you will need the correct dip stick and tube.

 

I wish I could post a picture I would make a drawing as it seems somewhat confusing. I don't have to try it, I've been doing it this way since 1965, just did one last week and I have never had a problem of the shaft coming up when the dist is pulled. It bottoms against the boss in the block where the bottom of the dist. shaft comes supports. Please explain how being on the bottom against the pump stops it from coming up? There is nothing for it to bottom out on until it reaches the boss where the dist is, thats a few inches. This why you see so many posts on all the forums about people pulling the dist and having the shaft come out of the pump and dropping in the pan. Please don't take this the wrong way, it's not for the sake of argument but just discussion.

 

To be clear, we're talking about Ford Y-Blocks in 239, 256, 272, 292, and 312 cubic inches, and nothing else. Nothing else matters for this discussion because nothing else is a Y-Block. Some people like to call FE's Y-Blocks and we are not talking about those. If it is not an overhead valve Ford V8 that came in the displacements I listed above, it is not a Y-Block for the sake of this discussion.
The block has a sort of pilot in the block for the very end of the distributor, just below the drive gear. This pilot is the same diameter all the way through to the oil pump cavity. I don't know exactly how long it is. The washer which fits onto the oil pump drive shaft has an OD that is larger than the ID of that pilot. So, if you put the washer on the top of the shaft, the distributor will not fit into the block because that washer will prevent the distributor from going into that pilot.
If you put that same washer on the oil pump end (the correct position), it still has a larger OD than the pilot hole so it will not pull out with the distributor and will not move far enough to disengage the pump. It cannot fall down because the oil pump is in the way.

 

I know the difference between an FE and a Yblock. We are talking Yblocks. Your description of it being a pilot hole is what I'm talking about. Picture the washer on the top of the shaft, then being installed from the bottom and the washer being under that pilot hole, not on top of it, of course you couldn't put it on top as you said.

 

I don't understand what you're saying. Obviously, if you've installed them with success, you have installed the washer on the correct end because it just won't go the other way.
It must be semantics. The diagram Y-Blockhead posted shows it in the correct position for a Y-block.

 

Maybe this will help you understand what I'm doing.
If the washer is on the bottom the distance it can move up before it hits the bottom of the dist pilot hole is approx 3 in. I'd go measure my bare block but it's to hot in the shop.
I adjust mine so it's 1/4 in below the dist pilot hole. The most it can move upward is a 1/4 in. That keeps it locked in the pump. There is no way you can pull it out

 

WTF? Sounds like your still putting it IN FROM THE BOTTOM...

You wouldn't even be able to move it up that far on an ARP shaft.



Installation instructions directly from John Mummert's http://www.ford-y-block.com site;

ARP 154-7906 Heavy Duty Oil Pump Drive for Ford Y-Block
As of May 2012 these drives are still assembled incorrectly
DO NOT INSTALL AS SHIPPED FROM ARP
MOVE IT TO BOTTOM OF SHAFT
THE CLIP MUST BE DIRECTLY ABOVE OIL PUMP

 

Never said I was talking about an ARP shaft... As I stated in the past posts I have never used an ARP shaft