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Author Topic: I know it does not take much torque to churn an oil pump when it's dead ended  (Read 5180 times)

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Qikbbstang

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I know it does not take much torque to churn an oil pump when it's dead ended
« on: March 01, 2015, 10:34:14 AM »
and obviously in bypass.  You can essentially peg a pump out with a speed-wrench when priming a motor.
I ask because word for word the Ford Muscle Parts Cat in regard to the C9ZZ-6600-A 427 Oil Pump states: "It keeps the slick stuff flowing at 22 gallons per minute under 70-80 psi at 1,000rpm"

Just the idea of flowing 22gpm through a FE motor at any rpm seems hard to comprehend. I just figure there's no way 22gpm could be pulled from a pan for long at all.  So why bypass so much oil?
« Last Edit: March 01, 2015, 10:38:35 AM by Qikbbstang »
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ScotiaFE

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #1 on: March 01, 2015, 10:48:32 AM »
You do realize that the oil is returned back to the pan pretty much as fast as is sucked out.
The reason you over "pump" is as rpm or the speed of machine increases the oil demand increases.
Pump Supercharging.
A smaller pump feeds the main pump.
Mostly used in high speed hydraulics.
 
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Qikbbstang

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #2 on: March 01, 2015, 08:20:46 PM »
 I thought the bypass on a FE oil pump bypasses the excessive pressure/flow from the downstream pressure side of the gerotor to the suction intake side of the gerotor all happening inside the pump housing.   Am I wrong on the internal bypassing?
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WConley

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #3 on: March 02, 2015, 12:59:39 AM »
It is ASTONISHING how much oil flows in an engine.  The oil has an important function of taking away heat, as well as lubricating, so a lot of it needs to be kept moving.  A typical stock oil pump will empty the oil pan in seconds at anything above idle (if there was insufficient return oil).

This is why oil drainbacks and baffles are so important.  You've only got gravity to get all of that oil back to the pump pickup.  Under normal operating conditions the pump will hardly bypass at all, so it's all going OUT!
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GJCAT427

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #4 on: March 02, 2015, 06:02:41 AM »
If you want to see how much oil comes out of the oil pump just submerge one and spin it. Stand back cause you will get covered in seconds! I have done this to see if the pump was clogged. The fiest time when I was young and didn't understand the inner workings of a motor! My dad just laughed.
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ScotiaFE

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #5 on: March 03, 2015, 11:14:27 PM »
Pump Super Charging with an FE!


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cjshaker

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #6 on: March 04, 2015, 12:27:04 AM »
Quote from: ScotiaFE on March 03, 2015, 11:14:27 PM
Pump Super Charging with an FE!

Wow, never seen that diagram or setup before. Pretty cool. Wonder what it was used on? Maybe the bigger FT trucks?
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Doug Smith


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thatdarncat

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #7 on: March 04, 2015, 01:04:56 AM »
That's the dry sump system for the Ford GT-40.
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Kevin Rolph

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Qikbbstang

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #8 on: March 05, 2015, 09:16:28 AM »
The dry-sump give-away are the words "Scavenge System". Looks like the bolt-on front half of pan holds the scavenge pump within the casting and the regular FoMoCo oil pump takes the gathered up oil de-aerated  from the reservoir (not pictured) and shoves it throughout the motor.  Anyone ever seen one of those dry-sumps in the flesh?
Seems like they would have made it into some NASCAR FEs?
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cammerfe

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Re: I know it does not take much torque to churn an oil pump when it's dead ended
« Reply #9 on: March 05, 2015, 10:06:31 AM »
Some years ago I had one of these systems---but from a 494 Can-Am 'Boss' motor. The lay-out was exactly the same. Jack Roush had a massive 'stash' of FoMoCo race parts and I got it for the project I was doing at the time for Super Ford Magazine. I had a 466CID 385-series SCJ motor that was going mid-engine style in a '72 Pinto with a full frame, roll cage and a 4" chopped top.

KS
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