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Old 02-18-2015, 04:15 PM   #7
gwhite
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Join Date: Aug 2010
Location: Texas: Where Bob Wills is still the king!
Posts: 354
Default Re: Hi-Volume Oil Pump

Quote:
Originally Posted by fiddlybits View Post
I suppose it would be possible but that would be one hell of a pump.
Given that a stock pump can move a lot of oil and the return path from the output in the galley will mostly be over the timing gears or down the overflow tube and back to the sump. I don't know if it would be possible to cavitate the pump.

As Brent pointed out, it is the size of the tube going to the bearing that is the limit.
Since it is a gravity feed to the mains, there is no advantage of pumping more oil into the galley since that limitation is not going to flow any additional oil. Any extra oil will simply take the overflows back to the sump.

Also remember that with the taller gears on the high volume pump it will take a little more power to turn the pump. I don't know about your car but I don't want to give up anything of what little I have to move oil for no benifit.

gwhite - The inside is actually very simple. The Oil Pump, Oil splash and Gravity oil the engine.

Gravity feeds the main bearings from the oil in the galley that is filled by the pump. Splash lubricates the connecting rods in addition to the "scoopers" on the big end of the rods that scoop up oil from the sump. Splash and gravity feed lubricate the camshaft bearings and lobes.


Oil starts in the sump. It's pumped to the oil galley by the pump and it literally just comes out of a hole and fills the galley up to the point of the overflow tube (visible on side of engine) or runs over a dam at the front of the engine and spills over the timing gear. That is all the pump does, fill the galley. From there on gravity takes over.
Thanks a ton...that helps tremendously. I think I got it now

Quote:
Originally Posted by d.j. moordigian View Post
How about this;....make a clear Lexan side cover and clear oil compatible
return pipe,...then go run it. Take photos at different RPM's and report
back to us. I'd be interested too see your findings...
That would be interesting!
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