CBR 600 F4i oil pump flow

[schumafer]

Does anybody know the flow of the original oil pump from a CBR 600 F4i??

thanks,

Fernando G.

[Nashco]

I, too, would love to see this information. It's not very easy to measure, so I'm doubtful that anybody has. I've thought about how it could be done on an engine dyno; it would be a little tricky, but not too bad.

Bryce

[bsclywilly]

I got 8.4 L/min/1000pump-rpm using q=(PI/4)*(Da^2-Dr^2)*W*0.5*2. Da is the large diameter of the internal gear and Dr is the small diameter. W is the width.

The F3 oil pump is the same.

Will

[schumafer]

thanks, but isnt that too mucho flow with the engine at 1000rpm?..i`ll check that ecuation...

Fernando G.

[Nashco]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Will C.:
I got 8.4 L/min/1000pump-rpm using q=(PI/4)*(Da^2-Dr^2)*W*0.5*2. Da is the large diameter of the internal gear and Dr is the small diameter. W is the width.

The F3 oil pump is the same.

Will<HR></BLOCKQUOTE>

So I'm assuming you took the pump apart and measured the gears? Mind sharing what the variable values you used were? These numbers sound reasonable based on the pumps that are available for motorcycle dry sumps, especially considering that's the theoretical maximum the pump can flow.

Does anybody know if the oil pump on the F3/F4 engine is geared down? I can't remember, it's been a while since I molested the engine. I'm guessing it spins at a lower RPM than the crank.

Bryce

[bsclywilly]

The dims i measured were Da=29.7mm, Dr=18.6mm, and W=20mm

The pump is run off of the inputshaft of the transmission and i believe that is geared down by a factor of around 2 from the crank shaft rpm. Sorry can't remember the exact ratio. So the pump is at approx half of the crank rpm.

Hope this helps,
Will

[schumafer]

i found that for a 600F the oil pump delivery is 39.4 lit/min at 5000 rpm. i think it must be around or the same for a 600F4i.

thanks,

Fernando G.

[Nashco]

Thanks for the info guys!

Bryce