| Clue | Source | Date |
|---|---|---|
| Powerful auto engines | New York Times | 29 Aug 2024 |
| Muscle car engines | Wall Street Journal | 25 Mar 2021 |
| Some combustion engines | The Washington Post | 13 Nov 2020 |
| Some combustion engines | LA Times Daily | 13 Nov 2020 |
| Some Chrysler engines | The Washington Post | 09 Nov 2018 |
| Some Chrysler engines | LA Times Daily | 09 Nov 2018 |
| Some Chrysler engines | ||
| Certain powerful engines, briefly | New York Times | 02 Sep 2016 |
| Certain powerful engines, briefly | ||
| Sphere parts | ||
| Prefixes meaning "half." |