Re: Twin plug Heads
For what its worth here's my two cents on the twin plug head idea.
As you already know the twin plug idea is great if your interested in a whole lot of work but in my opinion for no added performance gain. I know for a fact one plug positioned correctly will perform extremely well. While the Flatfire flathead designed and built by Dick Landy used twin plugs to run 300 MPH you also need to take into account the relocation of the intake and exhaust ports as well as the extensive changes machined into the flathead block the twin plug idea was but just one part of the puzzle.
The flatheads built since that time which have gone over 300 MPH used but one plug per cylinder. My gas burning blown flathead with one plug has run over 172 MPH in the standing mile the quality of the plug and ignition system is far more important than an additional plug.
Ronnieroadster
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