Can anyone enlighten me on what rate of flow a Blackbird (or similar) engine oil pump works at - in terms of gallons or litres per minute?

Obviously it will increase will engine speed, I'm after a maximum figure if possible. Google can't help me!

Good luck!!!

It is hard enough to find water pump flow rate - I had calculated this and found site in US with similar numbers so the data is out there but I doubt very much you will find out oil pump rate, espectially one for a specific engine.

Try contacting the manufacturer or make a test bed where you can whizz the oil pump round with a drill.

BTW why do you need to know?

If it's important to know and you can't find the info then calculate it by taking the pump out of the engine and measuring the volume of oil reguired to fill all parts of the impellor chamber.

Then check the drive ratio and you can assume something like 75% of the oil will be pumped for each rev of the pump shaft.

I say 75 % but it may well be 50% because oil pumps don't normally have good seals on the impellor but I may be wrong in this case. Feel free to use any other factor that you feels suits the type of pump you have.

If you do this please publish the results and methodology for others to refer to.

Thanks for the replies folks. I'm trying to scope the viability of using an electric scavenge pump. It would obviously need to flow more oil than the mechanical pump.

Honda UK were unable to help me, though they did inform me that the pump should provide 71psi at 5400rpm - I wonder if anyone cleverer than me can work out the flow rate based on the pressure and the surface area at the point where it's measured?

Failing that, I may try to bench test a pump as suggested. I will post any data I collect.