| 1. | The first Nash engine introduced in 1917 by Wahlberg had overhead valves.
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| 2. | There were 2 overhead valves per cylinder, actuated by an OHV valvetrain.
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| 3. | It marked the end of the V-8 overhead valve / pushrod design.
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| 4. | This had an 850 cc 4-cylinder overhead valve engine producing 24 bhp.
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| 5. | The standard Hillman pushrod overhead valve engine replaced the Singer overhead cam unit.
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| 6. | It also used the Clipper Custom's wheelbase and its overhead valve V8 engine.
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| 7. | In 1924 a 173 cc overhead valve single was added to the range.
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| 8. | The engine consists of six cylinders in-line, with two overhead valves per cylinder.
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| 9. | The engine was a overhead valve unit construction twin with a twin-port head.
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| 10. | All engines are of the overhead valve ( OHV ) design.
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