Algodoo

It is no makeover of my older engine, it's build completely new.
I wanted to give it a little bit the look of an old V8.

Other than in my older V2 scene, this one has another ignition order, and the "gasoline/fireball" is not static, but grows to a throttle dependent limit. You can watch it in slowmo at wide open throttle.
This creates a smooth run, even with this harder firing order.

Left - accelerate (is slowed down because of "knocking").

Down - holds throttle valve in current position (does not make sense when idling).

1 - start engine.

Sometimes, the engine "knocks" and therfore stops. just rev again and watch, if the red timing marks still fit together(hope this problem is gone with the slow acceleration).

To adjust idle speed, mildly adjust the idle spring length ( very very sensitve!).

If the fan bothers you, put it in the background or just delete it.

tested at 360Hz with 100% realtime.