Center Main Oil feed

[SAXBY2]

Do as you wish, but I don't think you will like doing it that way, ...and I am unsure who said to drill & thread the Oil Pump housing, but that is NOT the way most of us do them.

Check out the 4-Bangers and Me book for a reference.
Also, some oil pumps have slots to the oil galleys at the top of pump. The Snyders repros have slots. Were these stock for Model A or Model B ? Would the slots provide more oil flow than the slightly enlarged original holes ?

 

[Benson]

Check out the 4-Bangers and Me book for a reference.
Also, some oil pumps have slots to the oil galleys at the top of pump. The Snyders repros have slots. Were these stock for Model A or Model B ? Would the slots provide more oil flow than the slightly enlarged original holes ?

1. If you notice, Some of the B pumps have one slot in front and an additional slot in rear doubling flow.

2. There is more to it than that. B pumps and some later A pumps have PART OF the shaft turned down from .500 to .401 (between the bearing areas ) to allow more oil to flow.

3. There are several versions of housings with enlarged areas around the shaft to pass more oil.

4. Service bulletins have warnings about mixing various versions of some parts.

Tried to attach a Service bulletin ... never mind, I attached the service bulletin and it does not work here.

 

[SAXBY2]

Copper or steel lines for a short line ? The Oberer Article mentioned in prior post is in The MARC Technically Speaking series and shows a tap to the oil pump with feeds to the front and center mains using flared brake tubing. For just the center main, could copper tubing be used with compression fittings or should flares be used ? The same question if using 1/4" od brake tubing, flares or compression fittings like the firewall to carb fuel line, etc?