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Comment by pseudoralph | original | Internal Combustion Engine (2021)
[−]pseudoralph · 2026-07-01 Wed 23:38 UTC · link
Fiat (and other's I'm sure) have the [MultiAir system](https://www.caranddriver.com/features/a16580674/fiats-multia...) which doesn't use cams to actuate valves

And here's an example of someone that retrofitted a Miata to use a similar [air-actuated valve system](https://youtu.be/E9KJ_f7REGw)

[−]Toutouxc · 2026-07-02 Thu 04:54 UTC · link
The very first image at the very top of the MultiAir article shows, prominently, a camshaft and the cams used to actuate the valves.