Working on a '85 GS that has sat since '95. 20+ years is never good on a rotary. Poor thing.

Blew out all of the lines and drained the tank. Drained and replaced all fluids as well as a supplied a donor battery. Tested the starter to ensure that the engine would crank and it cranked very smoothly multiple times. Removed the spark plugs and fogged the rotors using seafoam through the sparkplug holes. Using the starter to crank the engine over to distribute inside of the camber. After fogging the chamber and cranking the engine three times the engine stopped cranking. Could still hear the Solenoid clicking when turning the key. Thought it might be the starter that had gone bad. After checking it and ensuring that wasnt causing the problem. We tried to rotate the engine by hand and it was rock solid. Placed it into 1st and tried pushing it backwards to rotate the engine but again it was rock solid. As a last resort we tried fogging the rotors again and am letting them sit to hopefully break down anything that may be causing an issue.

Wanted to see if you guys had any advice on getting it moving.

 

You using seafoam and no type of lubricant for the internals probably loosened up carbon, and now its carbon locked. Theres also a good chance that since you tried pulled starting it with it locked up, you damaged 1 rotor rousing and rotor

Time to yank it out is sounds to me

 

Agreed. Carbon lock. You shouldn't have fogged it.

There aren't many fixes for this. If you try to force it, it can do damage.

Time to budget for a rebuild.