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SD16 hat geschrieben:Was nehmen die da für Einspritzdüsen?

The valves may look a bit unusual. This is my solution to the problem of creating a hydraulic oil lock under a conventional bucket type follower. The valve stem is also the sliding part of the follower. The tops of the valves are screwed on after the springs are installed.

The fuel injector is quite small, and rated at about 20 hp per injector. I'm hoping one injector will run this engine. It came apart ok, and the coil is useable, if I can get some wires soldered onto it, after cutting the massive connector off.

The injector orifice is 18 thou' diameter.
Rather than trying to work out what orifice I needed, I decided to see what the smallest hole I could drill was.
I bought some solid carbide circuit board drills, and tried to drill some silver steel (drill rod)
The smallest practical hole on my slow spinning lathe was 10 thou'

The drills worked perfectly, and the holes were spot on.
Took about 1/2 hour to get 2mm depth though.

More pics to follow on injector design later...

Dave, yes I will get hold of a cylinder hone and have a play with it.