[kragen]

The cylinders are especially large, but the displacement is still only 2ℓ. I think the unusually high horsepower for a 2ℓ engine is not just because of high compression but also because ⓐ they normally run it at especially high revs, like your motorcycles; ⓑ they run it on a two-stroke cycle at low speeds, up to 3krpm; and ⓒ they optimized it to run on alcohols, which as you know have lower energy density but are better at keeping the engine cool.

[djrogers]

The engine does not run as a 2 stroke below 3k, the article says it theoretically could but they haven’t tested that.

Also, 8,500 RPM isn’t ‘especially high revs’ these days...

And finally, it still produces 500HP on pump gas - even that is outrageously more than any other 3cyl engine available.

[leetcrew]

8500 is still pretty high for a turbo. most performance cars with turbos don't have a redline that high.

[kragen]

Huh, I appreciate the corrections.