I dont know a lot about maintaining rotaries.. but I bought one for 200 bucks. and drove it 50K miles in one year..... Given it didnt idle at all so I had to pump the pedal to keep it alive, but that had something to do with my jury rigged carberator that came with it (it had mechanical secondaries! Like rotary Vtec!).
It was a great car.. Had one muffler and a racing beat header exhaust out under the passenger side door. thing was fun as hell
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I dont feel like a sig today.