VENTURI SIZE vs ENGINE SPEED
Hello all
Got a question here. I've been making some venturis out of Delrin and they are working OK.
Will a smaller bore size slow the engine down as far as RPM?
I started with a .304 (metric 7.74mm) and have it on the engine and running. It sounds good but maybe a little too much RPM. I ran almost a tank of fuel thru it and wondered what a smaller venturi size would do.
It only takes a few minutes to turn out another and I can change my bore size easily, the outside dimensions stay the same.
Any suggestions on this?