Thread: ID a twin plug Flatty?
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Old 09-21-2013, 12:43 PM   #5
51 MERC-CT
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Default Re: ID a twin plug Flatty?
Quote:
Originally Posted by FL&WVMIKE View Post
It might be aircraft. Planes are required to have a twin plug setup.
It would be a BIG project to set up a twin firing setup, when an automobile didn't really need it. Probably, that is why both plugs are not wired.
MIKE
Early aircraft engines were not required to have dual ignitions. For example this flathead that powered the 'Arrow'

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