Oil return pipe offset?

[JayJay]

The two sealing surfaces on the oil return pipe have an offset because the sealing surface on the valve cover is farther away from the cylinder centerline than the sealing surface on the block. Does anyone know, or have a print that shows, what that offset is? I need to rebraze a leaking tube and would like to build a jig to hold it while I do so.

I'm concerned about the later (longer) oil return pipe. I've seen three numbers for this - A6645, A6647 and A6648.

Thanks a million.

JayJay

 

[J Franklin]

It can be cleaned, prepped and the joint soldered in place using the engine as the jig.

 

[Randall]

Jay here's one I made to check for leaks and a jig to solder ,I show it in video, will measure the off set later this afternoon
https://youtu.be/W9TvsqfyFl8?si=D7_lMIYo7sktTLws

 

[JayJay]

Jay here's one I made to check for leaks and a jig to solder ,I show it in video, will measure the off set later this afternoon
https://youtu.be/W9TvsqfyFl8?si=D7_lMIYo7sktTLws

Sweet! Thanks a million.

 

[Brentwood Bob]

Good one Randall. What was the distance off set you used?

 

[Randall]

5/8”. Thanks

 

[Big hammer]

Don’t forget about the distance, bolt hole to bolt hole !

 

[Flathead]

How about using a junk block and side cover for a jig?

 

[Brentwood Bob]

5/8". Thanks.

 

[JayJay]

How about using a junk block and side cover for a jig?

Yeah, could do that if I had a junk block, other than the one that's in the car . But I'll check 5/8" and if it seems close that's what I'll go with.

 

[Flathead]

We have plenty of junk blocks here in Maine.

 

[katy]

Put a straight edge on the side cover opening down to the block opening and measure it. Simples.

 

[JayJay]

Put a straight edge on the side cover opening down to the block opening and measure it. Simples.

Katy - that certainly is one way to do it, but I was hoping to get the intended offset so my measurement wasn’t affected by whatever cover gasket is in place. I got sidetracked and have not done this yet, but thanks to all for responding.