Flow rate of oil pump -how many gallons per minute?
Does anyone know how many gallons per minute a Boundary Stage 2, and standard VVT oil pump can flow at 7000rpm? I have asked Boundary, but no response so far.
If anyone could direct me to the figures, it would be mucho appreciated :) Many thanks. |
Good luck with that.
I don't think anyone has bothered to compute it because it is what we are stuck using. Why don't you measure and compute it and report back your findings? |
If you know the exact geometry, the calculation is not that complicated. Oil is non-compressible; as such the flow rate can be obtained by calculating the change ratio of area between the inner and outer "gears" multiplied by the input=crank RPM where you want to calculate the flow at. This will give a good approximation; however it excludes any leak back in between the gears.
Here's a good read: https://www.researchgate.net/profile...0e4e71ed79.pdf |
The problem is finding the exact geometry when specialist instruments are required. It would be easier to bodgy up some sort of test bench, where the pump is mounted on a frame, the pickup[ is submerged in a container of X gallons of oil, and the pulley is rotated at Y rpm. Then we could just measure how much the output mouth discharged per minute at Y rpm...
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I tested this a couple years ago, vvt motor stock pump. Left the hose of my oil cooler off and started the engine. Pumped out 4 qts of new oil into my garage in about 5 seconds at a cold-start idle RPM. :)
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I've also done this, the sump will empty itself in about 30 seconds out of the oil gallery in the head. I once left a plug out and pump half out in 10 or so seconds, and thats through the tiny cylinder head restrictor (approx 2mm).
Perhaps we just put it in a bucket, turn it by hand 10 times and then multiply that amount by 700 to get an equivalent of 7000rpm. Dann |
Originally Posted by nitrodann
(Post 1477555)
I've also done this, the sump will empty itself in about 30 seconds out of the oil gallery in the head. I once left a plug out and pump half out in 10 or so seconds, and thats through the tiny cylinder head restrictor (approx 2mm).
Perhaps we just put it in a bucket, turn it by hand 10 times and then multiply that amount by 700 to get an equivalent of 7000rpm. Dann |
Flow Rate!
1 Attachment(s)
Theoretical flow rate of S2 pump calculated from raw geometry is attached. And before anyone else has to say it... holy decimal places batman...
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