Baltic simplex ( Ronaldson Tippet ) part 3

I’m pulling into pieces a bit more and I found out Ronaldson Tippett must’ve built this engine originally because they have engines the same

[@stephengibbs4372]

If you carefully take the nozzle out of the injector you can take the needle out of it and see where it seats like a normal valve and seat, ive lapped a few over the years carefully with fine lapping paste, or if not too bad use autosol polishing paste

[@mikef.1000]

Great work Ross... it would be great if you can get it back together and plonking along nicely

[@DarrenB-en9th]

What happened in part four ?