Oil pump pressure bypass spring question

[paddy]

Ok thank you guys. this is all good information that I was not aware of. I got my piece of granite from my kitchen guy. So what grits of emery cloth are you guys suggesting?

[larry]

Getting a gasket that fits the pump makes more sense than modifying the pump to fit the gasket.

[paddy]

I have the correct gaskets.

[T. Cotten]

Getting a gasket that fits the pump makes more sense than modifying the pump to fit the gasket.

Its not about fitting to a gasket, Larry!

Its about inspection: Just a few swipes upon a very flat abrasive will display any highspots or warpage.

Then comes correction when necessary.

The out-side of the body is a lot easier than the in-side!

....Cotten
PS: I always started out coarse, like 80 grit for stock removal, and avoided finishing too fine, as the mil-profile should 'bite' into the gasket.

[paddy]

Ok great thank you!!
I had found this granite stone online so I ordered it thinking it would be good to have around.aand for this little project.
Says flat to .00005
No adhesive needed

https://www.woodcraft.com/products/granite-surface-plate-9-x-12-x-2-a-grade

[T. Cotten]

I'd save the inspection side, Paddy,...

And grind on the other side.

My stones don't use glue either...

POLSHMIL.jpg
(42 incher under 30 incher,...)

POLSHML2.jpg
(28 incher, coarse, and I have more!)

....Cotten

[paddy]

Ha!!!! Very cool !!

[otis71]

I also had almost nonexistent pressure when hot in a 60 pan and addressed it in this forum too. Between advise received and me poking around I learned other factors also contribute to it and also learned flow is more crucial than pressure. Loose rockers can lower pressure and in my case a loose tappet block bore as well as using a James Gasket that was .010. In this case persistence may be needed.