Re: Oiling system history recap and update on the Oldsmobile oil pump conversion

Posted by Jack Vines On 2024/4/23 14:34:29

humanpotatohybrid wrote:
Thanks Jack but I'm not sure I'm following. Why wouldn't a shim with the same ID and OD of a gear, placed next to the gear, help reduce the pressure loss that would otherwise occur through that gap?
Only that in more than sixty years of looking inside oil pumps, I've never seen it done.

It's obvious the shims can't be full gear diameter, or they'd overlap. If the shim is the root diameter of the gear, there's still that space above the meshed gears to leak the pressure.

jack vines

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