I’ve been wanting to learn how to work with metal for a while now, my current long time goal is to get good enough to make a rotary valve train for my Subaru motor. I’ve been absorbing a lot of information about how engines work and how these parts interact I’m just missing all the practical knowledge for it.
A custom head + rotary valve train, the EJ25 uses standard valves with a standard cam design, this is fine, but rotary valves have their own advantages and disadvantages that I think would be fun to tinker with. Unlike a regular valve, rotary valves don’t have springs, therefore they don’t experience the “valve float” that standard valves experience at higher RPM’s, allowing you to rev to very fast engine speeds. They also give better fuel economy since they are much lower resistance, standard valves have to overcome the force of each spring in order to open, rotary valves are just a hole. Rotary valves are also non-interference, and if I blew the timing belt, it wouldn’t destroy the engine
I’d also just like to be able to make shit out of metal, it’s a brainworm of mine I’ve had forever