I've got a 1971 12A that hasn't been turn on in over 20 years. Jut wanna know if that motor has any chance of turning on. Am knew to rotary engine but wanna know what to do. Thanks in advance.

 

Try to find all gaskets and take it apart before trying to start it.
If there was no wrong with it when if it was parked it will still be very dry inside.

//magnus

 

I've seen one that sat outside for years, filled with marvel mystery oil and then worked by hand until it turned over. They then dragged it down the road in gear until it stared. It smoked like a Floridian brush fire for about 10 minutes. But the dude's been driving it for a few years now. I was amazed!!! Not something that I would do, if you have the mechanical ability I'd go with Magnus and take a look inside. Take the plugs out, and manifolds off so you can see in the ports. Spray some Marvel oil in the ports and plug holes and let it sit. Then working it back and forth by hand. Don't not force it if it gets stuck. If it gets hung up look through the ports and plug holes to ensure there is nothing stuck in there, If you can get it to turn over by hand, then use a compression tester with the schrader valve core removed and watch the pulse it should be 120ish. If that's all good , reassemble and give it a try! Good luck!

 

I've got 2 twin-dizzy 12As at the house. One's disassembled and internals are nice, the other is complete and still together - no idea what kind of shape it's in internally. If you do find that you need any internal parts, my disassembled engine can likely donate what you need. Let me know if you get that far with it.