Old Mechanic -
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Originally Posted by Old Mechanic
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Neil I did look over your proposed design in the first few posts. I believe one of the disadvantages of engines that have opposed cylinders like the old air cooled VW was that I have not seen one of that design that was terribly efficient in the first place.
I think disc type valves are an improvement over poppets in theory, but I am not sure if they have the ability to last and be low maintenance.
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Can you comment on liquid-cooled Subaru boxer engines? Frank Lee has stated that there have been experiments with VW engines where they remove 2 opposing cylinders out of a 4 cylinder VW engine and it stays balanced. It made me think that boxer engines are "naturally inclined" to have cylinder deactivation. I know that means extra weight and extra friction, but I was wondering if this was a "perk" that boxer engines could provide in the quest for greater MPG.
CarloSW2