Vibrac,
can you post some pictures of the flywheel and crank end ? Maybe we come to some ideas then. I would not think anybody puts Loctite on tapers, silly idea really. I´d try a massive hammer on the crank end with some protective spacer or so - photos please. But first you have to put a good force from a sturdy puller on the assembly - plus a good blow onto the crank. The size of the hammer is critical, the bigger the crank halves the bigger the hammer. You really need a good impulse from the hammer . Maybe cut two substantial threads in the external flywheel near the hub and a massive bridge over the crank end for a powerfull puller - plus the hammer blow for sure.
Vic