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Old 11-02-2020, 11:36 PM   #13
Ol' Ron
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Join Date: May 2010
Location: Chester Vt
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Default Re: Piston to Head Clearance Input

I still can't believe their still putting the sparkplug in the same place they did back in the 30's. The original reason was to clean the spark plug. Modern designed combustion chambers place the spark plug where it will doo the most good for a complet combustion of the AF
Considering the fact we are so concerned about piston to head clearance, there is a reason why! The large area of the piston diameter contains the majority of the AF as the piston reached the top of the cylinder it pushes all this mass at the spark plug, and the ideal place would be in the center of the transfer area. With all the money and time people spend on improving the old flathead, you'd think they would consider something a trivial as this. But changing patterns are expensive.

Just had to get this off my chest
Gramps
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