Jim's 4HM1021

| Model #: | 3HM1021 | Engine #: | |
| Bore & Stroke: | 10" x 13" | Cylinders: | three |
| Horsepower: | 135 | RPM: | 325 |
| Current Owner: | Jim Walsh |
| Current Location: | Fallon, Nevada map |
| Current Condition: | Unknown |
Engine History
Some members of the antique engine community think that Jim Walsh owns an Atlas-Imperial 4HM1021 engine, but OTM Inc has been unable to verify this.