1. Multivalve engines are considered high tech, new . . . bunk!2. All EWs are DOHC multivalve with displacement from 1749 to 2231 cc. 3. Most recent DOHC engines are multivalve , with between three and five valves per cylinder. 4. In addition to the multivalve engine, Porter's car was an unusual 2-door 4-seater. 5. In the US, Cleartron briefly produced the " Multivalve " triple triode for use in the Emerson Baby Grand receiver. 6. The four valves per cylinder are driven by a single overhead camshaft as opposed to the conventional DOHC arrangement for multivalve engines. 7. Because each cylinder on a radial engine has its own head, it is impractical to use a multivalve valvetrain on a radial engine. 8. Stutz, too, made multivalve engines; Paine counts among his prizes a'31 Stutz with a 4-valve V-8. 9. The articla I saw had quite a number of wide head multivalve headed motors and manny of them had more than one sparkplug per cylinder. 10. Its 415-horsepower multivalve engine, built by Mercury Marine, propelled the ZR-1 to a top speed of 180 miles an hour.
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