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I give those guys a call once every year and they are into Harley bike motors.. the BBC head (3valve) is on the back burner. Until they make a stack of money with the bikers, we wont see it. It has some interesting concepts and big promises, but I cant wait for them. I did look into a 4 valve head, but cost is a major factor. Lets see some 4 valve OHC heads for the BBC.. I would think seriously about them..
Dick |
OHC won't be happening to a BBC anytime soon or ever.
Solenoid operated valves will be the next big thing, and then we'll see more multivalves. Prolly 10 years out. There actually WAS a 4 valve head for BBC that was on the market for a while. Looked a lot like that 3 valve, at least in the way the cross push rods were set up. It wasn't as beefy looking in the actuator area and I heard it was very delicate and very few were bought. Cant remember who made it. |
I know there were or are others I just have CRS at the moment. :rolleyes:
4 valve heads. 200HP more? http://www.araoengineering.com/Chevy/chevybb.htm |
Definitely cool stuff!:cool:
Brian Where could I find more info on solenoid operated valves? Is this in the works? Are there prototypes? |
Originally posted by tomcat Hot Rod - June 1999 Jim Feuling's first prototype for a three valve head, two intakes, one exhaust, centrally located spark plug. Never heard about it again, but the idea was better breathing without insane valve train specs, and avoidance of hot spots and resulting detonation caused by the difficulty of cooling between the two exhaust ports. Very smart guy, worked on the Aerotech porject for Oldsmobile, many other manufacturers. The same though crossed my mind when I saw the engine. http://www.feuling.com/ |
I just read in a law review site that Jim Feuling lost his patent infringment suit against DaimlerChrysler..... worst part is... it appears he has to pay the legal costs for DaimlerChrysler.... ut---oh..... I hope I didn't read that correctly....Maserati had a three valve set up on the Biturbo model.... what an orphan set-up.... there were two inverted buckets ... one for the intake valves and one for the single exhaust valve.... The intake valves were positioned diametrically opposed under the inverted bucket and had "winkler" caps on the valve stems for adjustment. So to adjust the valves the cams and buckets had to be removed.... uggghhhh! Talk about an ill conceived motor..... The intake manifold had to be removed to change the starter motor! Kind of makes working on boats seem simple!
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interestig. i'm thinkign she don;t like to spin up to 7500 rpms........
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It will be capable of rpms in excess of 7500. Even though there are double the amount of intake valves, each one is actuated individually, and the inertial mass of the smaller, lighter, valve/spring/retainer combination will be easier to control given current spring technology. Spring surge and valve bounce will be significantly reduced allowing for both higher revs and the use ability to control more aggressive cam profiles.
Bob |
I swear, what is it with GM and pushrods? The 70s are long gone LET IT GO!
Roby:confused: |
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