Comment by ryandrake
5 years ago
Not only the tight measurements, but I've always been amazed at the precise timing of all the little moving parts, the valves all opening and closing at precise to-the-millisecond times so that each stroke happens, at 6000 RPM! So impressive. Especially with an interference engine, where getting that timing wrong means bent valves.
Mmm.. not really. It's just a cam and a spring. Pretty easy to get that bit working by yourself. Variable valve timing and lift is much more impressive.