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I wasn't sure where to put this....

I am playing with some simulation programs (i know...), and need to know volumetric efficiency of a stock/ mildly modified 675. I know it has to be over 100% at peak output, but anything beyond that is a pure guess.

Thanks
 

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I can't help you with the actual VE for the 675 motor unfortunately, but you should be able to calculate it if you can determine the mass flow rate of air, and the temperature of the air at the rpm you are interested in.

I stumbled on this link a while ago when i was helping a mate search for info for his thesis and it may help you out if you want to go down the route of calculating the VE yourself.
http://www.installuniversity.com/in...metric_efficiency/ve_computation_9.012000.htm

Please note that i have not reviewed the equations in that article so i take no responsibility for them if they are not right.

Out of curiosity; what are you looking at modifying?
 
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