Flathead design question
#1
Flathead design question
Hi! I'm new to the forum as you can see. Great forum here. There is a question about flathead engines that I have always wondered about. Why have none(to my knowledge) ever been built with valves on both sides of the cylinder bank? A double side valve so to speak. That is, with a straight 4,6,8 there would be two in-block gear driven cams, one on each side, actuating two intake and two exhaust valves per cylinder. With V-type engines 3 cams could be utilized (one intake cam and two exhaust cams). Intuitively it seems as though this could double intake and exhaust flow. Thus improving flathead performance vs a SSV configuration.
Thanks in advance,
Bob
Thanks in advance,
Bob
Last edited by bobcat1156; 07-21-2021 at 07:30 AM.
#3
Chevy 327 V8 weight - 575 lbs
Ford Flathead V8 weight- 569 lbs
Last edited by bobcat1156; 07-22-2021 at 06:01 AM. Reason: added data
#4
First, welcome to FTE!
What you describe sounds close to a "T" head engine.
While your idea is interesting, it would feed such a niche market I'm not sure it would be economically feasible. There have been attempts to cast new "stock" flathead blocks, but it looks like the interest/money just wasn't there to sustain it. A custom multiple cam block would be even more expensive and most likely only attract the salt flat runners and drag strip racers. That's a pretty small group.
I think the bottom line is....well...the bottom line.
What you describe sounds close to a "T" head engine.
While your idea is interesting, it would feed such a niche market I'm not sure it would be economically feasible. There have been attempts to cast new "stock" flathead blocks, but it looks like the interest/money just wasn't there to sustain it. A custom multiple cam block would be even more expensive and most likely only attract the salt flat runners and drag strip racers. That's a pretty small group.
I think the bottom line is....well...the bottom line.
#5
Thanks! That would be it. I knew it had to have been thought of. By the look of the drawing I'd say 1920's (no counterbalanced crank). Yeah my design would be an X-head. I was going to design in a raised X in the top of the pistons to give more"squish" on the compression stroke. Two spark plugs per cylinder to even out ignition of the charge. I'll keep dreaming.
Bob
Bob
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