| Year | 2010 |
| Date | 09-Apr |
| Volume | 204 |
| Issue | 4,375 |
| Page | 452 |
| Category | Internal Combustion |
| Part | 3 |
| Title | Rina, a freelance air cooled hit and miss engine |
| Author | Jim Service |
| Notes | Continues by making the cylinder and cylinder head. Alternative cast iron cylinder, spark plug hole, valve cage hole, cooling fins, valves and valve cages |