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5-valve flow data?

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Old 05-26-2000, 06:48 AM
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Default 5-valve flow data?

If anyone can direct me to any information regarding the flow characteristics of the 5-valve head design, or if you are personally knowledgeable about some of the more technical aspects of this design, please contact me.

Thanks!
Old 05-26-2000, 07:12 AM
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LCP
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Default Air flows in through the 3 smaller ones and out through the 2 bigger ones

Glad to be of assistance. You're welcome. 8^)
Old 05-26-2000, 09:08 AM
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Default i have experience tuning Yamaha 5 valve bike engines.....

.... there are a great deal of benifits and options multi-valve config gives you...
smaller, lighter valves are easier to control and at higher reves. multiple small inlet valves can offer greater swept area than 1 or 2 larger valves.
having more than 1 or even 2 inlet valves can give advantages in head design for:
inlet flow charecteristics,
port shaping,
valve timings,
inlet charge turbulence,
pressures and volumes (flow) at desired revs and loads,
smaller valves can be at smaller included angle...

i may not have all the answers you are looking for, i learned from an engine tuning/flow bench master who knows things i just begin to understand. but, what would you like to know?
w
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