3 ms·
Pneumatic valves are expensive. They have been used in F1. Similarly, despite overhead 𝚟̶𝚊̶𝚕̶𝚟̶𝚎̶𝚜̶ cams being invented in 1902, they weren’t popularized
by noughtme 7y ago
Pneumatic valves are expensive. They have been used in F1. Similarly, despite overhead 𝚟̶𝚊̶𝚕̶𝚟̶𝚎̶𝚜̶ cams being invented in 1902, they weren’t popularized until the 1983 Toyota Corolla, and you can still find pushrods in the 2020 Corvette.
- rootusrootus 7y agoSeems you misspoke. We've been using overhead valves far longer than 1983. Overhead cam is probably what you meant. Though depending on how mainstream it needs to be in order to be considered 'popular', the first dual overhead cam engine was in production in the 20s, IIRC.
- tonyedgecombe 7y agoFIAT/Lancia were using OHC engines in the seventies, well before 1983.
- jacquesm 7y agoThey were used in a little 0.7 liter Daihatsu Copen engine as well if I remember correctly.