Traditional 64mm Kinsler vs. a "shaftless" 64mm Kinsler that were built identical in dimension tested on a 4P 2.5L road race engine on our Superflow engine dyno.
I'm gonna lay all the cards on the table here...
-they close with throttle plate at only 5 deg and have superior idle characteristics and off idle control -they have a different throttle ratio and offer much more throttle control for street and road race cars -more airflow from the same size runner makes more power bottom to top
-they aren't cheap. Retail is around $4500. That may come down if production volume increases but right now I have the only ones. I'll sell the set from the dyno test for $3400. We can build these in a variety of sizes up to 67mm #4p #4piston #4pistonracing #KILL