Quote:
Originally Posted by Ol' Ron
You mentioned dual plug heads. I think the location of the spark plug in a flathead would best be served by placing it in the center of the transfer area and at the same angle. When flow benching The flathead I made up several combustion chambers to observe the affect of the transfer area on flow. The best flow was in the 10 to 12 degrees similar to the stock EAB head. However this reduced the CR and was only effective in the upper RPM range. Reducing this to 8 degrees provided a higher CR with affecting the flow that much. Also the exit of the transfer area must be taken into consideration. If the plug were installed in the center and at an 8 degree angle, a power tip plug could be used and much better fuel economy could be had.
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The dual plug heads are for the Model A. Snyder needs 20 of them for airplane guys. I will also offer them in iron for street guys.
Tod