You should get a fair bit. I find selling spares pretty easy and the oddest items go for silly money. It is however effort. First you need to brake the bike and have a system for storing and organising the parts. Then there's the research to work out how much to sell each item for, pics to take and then the description etc... I reckon if you can get stuck in and stick at it you'll do ok...
Personally I think it's time to learn to do an engine rebuild and get it back on the road
