| 41. | His 173 cc overhead valve ( OHV ) model with an external flywheel proved particularly popular.
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| 42. | In contrast, Harley's biggest engine is a 1340 cc V-twin with two overhead valves per cylinder.
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| 43. | The 1955 model was powered by the overhead valve Fairlane 500, Custom 300 and Ranch Wagon models.
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| 44. | The P�trel had four overhead valves per cylinder, two exhaust and two inlet, in bronze valve guides.
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| 45. | Brage had an overhead valve petrol engine.
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| 46. | In 1977, a overhead valve ( OHV ) diesel engine from Opel replaced the outdated Perkins units.
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| 47. | The overhead valves are driven by a gear driven camshaft . Each piston has five piston rings.
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| 48. | The overhead valves had single springs but there were return springs to keep the rockers to the pushrods.
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| 49. | The Z�ndapp KS600, first released in 1938, had a horizontally opposed twin cylinder motor with overhead valves displacing.
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| 50. | From 1921 to 1926 the vehicle was powered by a four cylinder or 6 cyl overhead valve Continental engine.
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