Marine Engines - Brooke to Evinrude |
| Manufacturer | Model / hp | Spark Plug |
| Manufacturer | Model / hp | Spark Plug |
| Brooke | ---- | 8 Com | Elto | Handifour, Lightfour, Imperial | 17 |
| Bruneau | ---- | 8 Com | Elto | Special Speedster 1928-31 | 7 |
| Chris-Craft | 14mm fitting | J-8 | Elto | Speedster 1928-31 | 7 |
| Coventry Victor | 18mm fitting Inboard | 7 | Elto | Special Speedster 1949 | 7 |
| Coventry Victor | 18mm fitting Outboard | 8 Com | Elto | Speedster 1949 | 7 |
| Coventry Victor | 14mm fitting | L-10 | Elto | Sportster | J-6 |
| De Dion | Pump | 7 Com L | Elto Racing | Midget Racer | R-1 |
| De Georgi | ---- | 7 | Elto Racing | Racing Speeditwin 1934 | R-1 |
| De Ville | ---- | 8 Com | Elto Racing | Racing Speeditwin 1935 | R-11 |
| Dorman | ---- | 8 Com | Elto Racing | Racing 460 1933-34 | R-1 |
| Effekto | AF AG | 7 | Elto Racing | Racing 460 1935 | R-11 |
| Elto | Ace, Handitwin 1936 | 15-A *** | Elto Racing | Racing Super C 1930-33 | R-1 |
| Elto | Ace Handitwin 1937-41 | 8 Com | Elto Racing | Racing 460 1930-32 | R1 |
| Elto | Cub 1/2hp 1939 | J-12 | Evinrude | Big Four 1931-32 | 17 |
| Elto | Cub 1/2hp 1940-41 | J-12 | Evinrude | 50hp 1946-50 | R-7 |
| Elto | Pal 1.1hp 1937-41 | H-10 | Evinrude | Big Twin 1931-32 | 0 Com |
| Elto | Lightweight 1929-30 & 31-33 | 7 | Evinrude | 25hp 1951-53 | J-6 |
| Elto | Lightwin 5hp 1920-27 & 34-41 | 7 | Evinrude | Single A, Fleetwin 1928-9 | 0 Com |
| Elto | Service twin 1928-31 & 36-37 | 7 | Evinrude | 8-11hp 1930-34 | 7 |
| Elto | Quad 1928-29, Fisherman | 7 | Evinrude | Speeditwin 1927-29 | 0 Com |
| Elto | Lightiwn, Imperial, Service A | 7 | Evinrude | 22½hp 1930-31 | 0 Com |
| Elto | Super A, Fleetwin, Senior | 7 | Evinrude | 22½hp 1950-52 | 17 |
| Elto | Speedster, Foldlight 2¾hp | 7 | Evinrude | Fastwin 1927-20 | 0 Com |
| Elto | Single, Super Single | 7 | Evinrude | 14hp 1930-33 | 7 |
| Elto | Big Quad, Speeditwin, Super C | 17 | Evinrude | 14hp 1950-52 | 7 |
| Elto | Senior Quad, Junior Quad | 17 | Evinrude | Super Fastwin 15hp 1953 | J-6 |
