Opel Has Been Building 16-Valve Engines for 100 Years
They did not become common until the late 80s
Four-valve per cylinder engines are ubiquitous in modern engines. In fact, it would be difficult to find an engine from a major automaker that did not use the technology today, but four-valve cylinder heads did not become normal in everyday cars u...
Four-valve per cylinder engines are ubiquitous in modern engines. In fact, it would be difficult to find an engine from a major automaker that did not use the technology today, but four-valve cylinder heads did not become normal in everyday cars u...
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