I have a Kyosho Spada with the Sirio .09 engine. Recently the engine consistantly dies after about 5 minutes. Before this started I could run 15 minutes on a tank. The engine doesn't get 'out of range' hot. Generally in the 180-190F range. When it shuts down .. it just stops. When I go to restart the engine rev and dies. When it does this it will not just idle either. It sounded like an airleak so I replaced the tank, pressure and fuel lines. The carb is cast into the crank. The car runs real strong for that 5 minutes then just dies. There is still good pinch.

I'm thinking bearings.... Am I on the right track?