I'm at a loss at this point. Your clue sends me deeper down the path of engine starters. My experience is that there are many engines both piston and turbine, modern cycle both four stroke and two stroke, hit and miss antiques, small single horsepower to massive, small turbines to huge stationary turbine power units.
My only other direction, and your clue concerning Grizzle lead me away from it, was that it was part of an artillery load (projectile, powder packages, igniter).
I will sit back and watch.