I would like to have a few spare parts of the tin works setting around just in case I should ever need it. I want to keep this in really good shape because I plan to use the air keeping the engine cool as forced heat.
Apart from the flywheel fanshroud being nearly the same as a Lister HA2/3 or HR2/3 engine, I am certain sure the rest of the cowling is unique to this engine. The individual parts that fit round the cylinder barrel would not be difficult to re-manufacture, but the main cowling that ducts the air onto the cylinder head and cylinder barrel would be very tricky to recreate. I can only suggest that you keep on top of any surface rust that appears on any of the sheet metal parts.
I will run an outside air intake with a filter to the side of the shroud and the heat from the engine will be piped in for heat.
No need to go that extreme, just cut a hole in the building (and cover it with a mesh grille) where you intend to site the engine, as that's no different to what Lister's themselves advised for aircooled diesel engines situated inside a building. If you try and filter the incoming air before it goes through the engine, the restriction the filter creates will reduce the airflow considerably, and as the filter blinds up you may even overheat the engine.
I will keep a CO monitor close just to make sure engine exhaust will not get mixed in.
No need for that either, as diesel exhaust fumes contain minimal CO content, if you do get an exhaust leak your eyes will start to sting more than you can bear long before you are gassed.
Now a hypothetical question for all you Lister CS gurus:
I see no reason why it is not possible to create a twin cylinder Lister VA 15-2 engine, providing you could locate enough scrap engines to source the required parts from. The only problems I forsee are:
1), Drilling and tapping two groups of five holes in a CS twin cylinder crankcase for the cylinder head studs, so they wont clash with the existing cylinder head stud holes.
2), Blanking off the existing tapped holes in the CS twin cylinder crankcase.
3), Manufacturing the required sheetmetal work for the cowling.
4), Overcoming the problem of the flywheel fan shroud clashing with the positioning of the second injector pump.
Your comments are eagerly anticipated