Hi Mike,

CFM to RPM is easy... a 2.1L engine pulls 2.1L of air per RPM.

One liter = 0.0353146667 cubic feet. So a 2.1L engine at 1000 RPM
pulls 74.1608 CFM

Happy Trails,

Greg Potts
1973/74/75/77/79 Westfakia "Bob the Tomato"
www.pottsfamily.ca/westfakia
www.busesofthecorn.com

On 4-Nov-06, at 2:06 PM, Mike Bucchino wrote:

>  You could bolt an AFM to a flowbench and run tests to determine these
> voltage changes for a given CFM, but you'd need to know how CFM
> equates to
> the engine's rpm,