Quote:
Had a thought why not make the Packard gear root circle deeper below the gear toward the center of the gear would allow more oil in the cavity thus increase the amount of oil in each tooth void as it goes around and not effect the gear contact area
Yes you could do what you describe, essentially emulating the GM high volume tooth root design on the Packard oil pump gears.
There are three problems with this that I see:
1) You would have to have a gear-cutting machine or a very sophisticated machine shop make this mod. This would probably be more $$$ than the adapter and a new Olds pump, IMO.
2) This does nothing about the wear between the tip of the teeth and the oil pump housing, which occurs over time. As that wears, oil leaks from there too. Sometimes one cannot fix a worn out part without major ($$$) surgery.
3) The Packard oil pump is about 3 inches above the bottom of the pump to allow for the vacuum pump and it uses a "dropped" pickup. This increases the hydraulic "draw head" and is less efficient than the Olds pump which is at the bottom of the sump with the adaption.
Thank you for thinking about this problem and taking the time to produce the GIFs.
Craig
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=16061