| Year | 2014 |
| Date | 25-Jul |
| Volume | 213 |
| Issue | 4,487 |
| Page | 176 |
| Category | Internal Combustion |
| Part | 2 |
| Title | Internal Combustion Theory and Practice |
| Author | Ron Wright |
| Notes | A retired technical college teacher provides an in-depth course in I/C. Valve timing, volumetric efficiency, cycle details, exhaust valve opening, inlet valve opening (commencement of overlap), exhaust valve closing (end of overlap), inlet valve closing, valve timing diagram, valve periods, maximum valve lift, high performance timing, low speed disadvantages |