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Author Topic: Oil pump tech.  (Read 653 times)

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Online JHale496

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Oil pump tech.
« on: January 22, 2015, 12:03:43 pm »
https://www.youtube.com/watch?v=PDO5bb9_PeE
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Offline Pushrod

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Re: Oil pump tech.
« Reply #1 on: January 22, 2015, 01:26:19 pm »
Thanks John, that spread is certainly a bit of a shocker to me.

Do you know if the tests were carried out at operating temperature ? All the dry sump pumps we use on Road Race cars have cast iron pressure sections. They seem to hold a more consistent internal clearance when the engine gets up to temp.

Excuse the late responses, I'm going home when you guys are having breakfast.

Thanks

Rob

Offline Keithf

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Re: Oil pump tech.
« Reply #2 on: January 23, 2015, 03:22:29 am »
Simple test to prove a major point... Good stuff...............       KF
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Online JHale496

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Re: Oil pump tech.
« Reply #3 on: January 23, 2015, 08:59:39 am »
Looks like room temp. 60wt is probably better for the test than 70wt.
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Offline 23T Hemmee

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Re: Oil pump tech.
« Reply #4 on: January 23, 2015, 10:20:08 am »
Maybe I missed something on the video, but 7500 pump speed is 15,000 engine speed.  I'm thinking he needs to retest at a more realistic rpm if that's the case, although I would imagine the final results would be similar.
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Offline Kenneth S

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Re: Oil pump tech.
« Reply #5 on: January 23, 2015, 11:00:36 am »
I think he's referring to crankshaft rpms on the pump rpms. I don't think Bill Miller would make that kind of a mistake.
« Last Edit: January 23, 2015, 11:14:38 am by Kenneth S »
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Offline 23T Hemmee

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Re: Oil pump tech.
« Reply #6 on: January 23, 2015, 12:15:26 pm »
Thanks Kenneth,
Just saw that clarified over on ITA, didn't even realize that was Bill Miller, would have know better.    :-[
Ronny
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Offline Gaynor Spice

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Re: Oil pump tech.
« Reply #7 on: January 26, 2015, 01:37:21 pm »
That's amazing.

Now,who will be the first to debate facts?

Offline Jeff Courtie

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Re: Oil pump tech.
« Reply #8 on: January 27, 2015, 02:52:05 pm »
That's pretty amazing, back in the seventy's Keith Black's pumps were so good they use to pump the pans dry on a run (8-10 quarts), Gary Beck was the one who discovered it and Black made changes to the pumps to slow/limit them, saved a lot of cranks after that.
« Last Edit: January 27, 2015, 08:21:55 pm by Jeff Courtie »

Offline DRE

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Re: Oil pump tech.
« Reply #9 on: January 27, 2015, 03:15:00 pm »
Questions----

 If one were to restrict the oil back into the holding tank to what the oil inlet of the engine would see as far as flow numbers and galley pressures--- would there be the same results? or at that point the difference to close to call or even matter?

 Fuel pumps are kind of the same thing, We have the spur gear type and the geo-rotor (Enderle-thats stretching it) If we were to free flow un-resticted would the same events happen? But since they are tested thru a regulated spec'd  oriface and RPM limit, cavitation is not apperent
BRUCE DYDA

Offline Gary Anderson

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Re: Oil pump tech.
« Reply #10 on: January 27, 2015, 06:16:49 pm »
The guys at Titan Pumps had just the opposite results>

And they can get a spur gear oil pump to explode from cavitation......

WHY the different results????

Not bashing, just curious.........

Your Pal, Gary
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Offline 23T Hemmee

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Re: Oil pump tech.
« Reply #11 on: January 27, 2015, 08:39:48 pm »
I honestly don't see how testing a pump with anything other than the same restrictions as the passages in the block is going to give you anything conclusive.  Don't believe I'm ready to trash my georotor just yet.
Ronny
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Offline FrankOusley

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Re: Oil pump tech.
« Reply #12 on: Today at 08:30:46 am »
I honestly don't see how testing a pump with anything other than the same restrictions as the passages in the block is going to give you anything conclusive.  Don't believe I'm ready to trash my georotor just yet.
I wouldn't either. Both designs have been around for years and both work well. It is a debate where both sides have their strong points but in the end they both do the same thing.

Online JHale496

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Re: Oil pump tech.
« Reply #13 on: Today at 09:04:23 am »
A strong point here is going to a -20 really helps.
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Re: Oil pump tech.
« Reply #13 on: Today at 09:04:23 am »
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