Not Ranked
Keithc8 Keith I know about some of the tricks they have done with the master challenge. Honda rods, trick cranks with counter wieghts cut off, flanges with 3 bolts to hold the flywheel. Moving valve locations from stock position. The stroke to bore ratio. the pistons are out of the bores with .010 clearance to the heads. I don't know if you agree with this but a Oval or round port is going to give the best flow of any head. I would go with oval and fill in the floor and roof for max flow and blend it into the valve area. Nail head valves give 4-6% more flow than tulip valves on intake. On exhaust a 2-4% more flow comes from tulip over nail valves. Different heads respond to different backcuts on the valves. This is all due to port design. Bore clearance onthe valves also helps. Cam profile is the rest. The higher the vacuum you can keep in the motor, the more fuel and air can go in. The limitation is the carb or fuel injection body sizes. If Kaase builds a 510 SVO motor I think he will win. If time permits in august I want to stop by your race shop and see one of these street motors on a dyno. A motor is still a vacuum pump and physic can't be changed, BENT but not changed. I have the head program coming for port design and flow. I might even go to a head porting school to get the basics down. A wet flow bench is not out of the possiblity either. There is a different between wet flow and dry flow bench? I am also talking real street motors like what you build not 8000 rpm race motors. Even with all the tricks done to a motor, with the right numbers installed in the program, 5-8% vary is max unless you are in death valley. Rick Lake
|