been thinking on this piston window thing.
I believe the side port idea may effect aux port flow. as when the aux ports are needed they are a more direct route for the charge hiding in the intake area infront of the reeds.
I believe that the center "S" design will and DOES effect the floor and rear boost flow.
I believe the HIGH center port idea, will effect the rear boost port, even though it may clear the hiding charge under the piston?
Im thinking. that since the big K5 already has OVERSIZED transfer ports. we need all the squeeeze we can get.
Im now thinking that some Skirt modifications in the transfer port area like I already do is in order.
and some skirt modifications on the intake side. as like the transfer area, the radius's were made and designed for cast pistons to live. but since we are running FORGED pistons. we can get away with more... and thus, modify the bottom profile some.
thinking keeping the greatest ammount of area under (bottom profile) of the intake skirt open as long as we can till just before the transfers open up... is perhapse the way to go here...
so they will close JUST before the transfers open.. so we still have the nearly the same port duration as a window, with only a few degrees of closure, before the aux and boost ports pick it back up. (floor ports still cause it to be full duration open anyways) causing the piston to be a big plunger.... helping to shove the LAZY intake charge through those over sized ports....
thoughts??
warning. I didnt proof read this. just typed it...............
keep in mind. I build power for DESERT PEOPLE. not drags, or hill climbs so windows may work better for those "other" types.
