Grand National

[Carl Summers]

Iestyn Guest wrote:
> 
> Hi All -
> 
> Sorry to be a drag, but what is the formula for calculating injector size based on HP and RPM?
> 
> Thanks very much


The way I have always done it is:   HP x BSFC divided by # of injectors=
injector size.....note brake specific fuel consumption is generally .45
-.5 for aspirated applications and .55 for blown or turbo,,,,but have
seen some pro stock motorcycles as low as .39.....hope that helps....
-Carl Summers