Re: 255 merc engine
In a way I agree with Pete. However, at 87, it's something to do. Putting the plug in the transfer area allows the use of a power tip plug, which is right in the middle of the combustion chamber when the plug fires. If you have a .050" piston to head clearance te AF in the chamber is in a turbulent state during combustion and all or most of the fuel is burent. At least that's my reasoning. Better than watching re runs on TV and it mIGHT work
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