ratio411
Founding Member
These heads have been available for almost 20 years.
They are available for several engines.
They are pretty awesome appearing and they must be selling some to be in business for so long.
The ones that are really cool, are the rotary valve heads!
They have no cam, pushrod, springs, etc...
I think they are from the same company, not sure.
The valves are smooth metal spheres on a shaft, that have a flat side to allow intake/exhaust to pass as they spin over the ports.
The power band is supposed to be a country mile wide, the rpm capability is super high without springs, and instead of changing the cam for performance, you just mod or change the sphere valves.
Really cool stuff. I saw articles on these about 10 years ago when they were in testing. Nowadays, they are like these 4 valve heads... someone brings them up once a year and you think about them... other than that, they are forgotten.
Dave
They are available for several engines.
They are pretty awesome appearing and they must be selling some to be in business for so long.
The ones that are really cool, are the rotary valve heads!
They have no cam, pushrod, springs, etc...
I think they are from the same company, not sure.
The valves are smooth metal spheres on a shaft, that have a flat side to allow intake/exhaust to pass as they spin over the ports.
The power band is supposed to be a country mile wide, the rpm capability is super high without springs, and instead of changing the cam for performance, you just mod or change the sphere valves.
Really cool stuff. I saw articles on these about 10 years ago when they were in testing. Nowadays, they are like these 4 valve heads... someone brings them up once a year and you think about them... other than that, they are forgotten.
Dave
