Main | My collection | Entire Collection | Highlights | Go Alongs| My cars | Good Friends | Contact me The different types of spark plugs in my collection Design and variations Spark plugs built to keep the oil away The spark plug I have called ”Regular” has many different designs and variations: One piece or take apart Siemens und Halske - ESHA, Germany Eagle, Ireland Porcellain or mica insulated , even with clear glass for reading color of burning gas in cylinder NGK, Japan Fert, Italy Prismatic, USA With petcock for priming M & M Co., USA Breather plugs with different type of valves for priming and cooling Automat, USA With fins and/or air holes for cooling Candela Signorini, Italy Supplex, France ”Intensified“ to intensifie the spark James, USA Dynam, USA Series plug , used together with a regular plug in an engine with two plugs in each cylinder Lodge, England Double plug , used in an engine with both battery and magneto ignition systems Champion, USA Double ended plugs, to turn over when oily or worn out Twin, USA ”Q D“ Quick detachable plug for easy priming and cleaning also often with possibility to attach an pump motor to inflate the tires Colin, France Shielded air plane plugs to avoid radio interference BG, USA