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Old 05-04-2021, 02:55 PM   #9
nkaminar
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Join Date: Jan 2012
Location: Western North Carolina
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Default Re: Anyone run a Lion Head

Model A Ron, The combustion chamber shape has as much to do with performance as the compression ratio. The more turbulence the faster the fuel/air will burn which means the pressure is higher. Plus, the design around the valves can lead to better breathing. The dual spark plugs will also mean that the fuel/air will burn faster and it will reduce the tendency to knock, so more advanced ignition timing can be used. Knocking happens a lot at the corners of the combustion chamber when the pressure is built up by the fuel/air combustion and a little pocket of unburnt fuel/air is trapped. The dual plugs means that the flame front reaches the unburnt air/fuel before the pressure has built up to where it explodes on its own.
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