"required valves"? A pressure check valve tapped into the injector hole should be enough. I'll go get my old inj and do some experimenting. When it's on the compression stroke, the valves have the cyl closed off. Allow the air to escape out the injector hole, check it so it can't pull air back in from the air tank. Wait, I'll have to vacuum vent it somewhere else to relieve vacuum pressure on the ignition down stroke when the valves are closed. Ugh, I love brain storming design.....
Luther ~> What size thread fitting will I need to thread into the injector hole ~> or glow plug hole? I might have to custom tap a 1/4" NPT into an old ~> injector if it's not standard enough.....any ideas? ~ ~Drill out and braze a fitting into an old injector? I'd be ~worrying first about the required valves. ~ ~-- Jim ~ ~ -- Luther KB5QHU Alma, Ark '83 300SD (231,xxx kmi) '82 300CD (159,222 kmi) '82 300D (74,000 kmi) needs MAJOR work
