Thanks. The tin is chrome that the PO put on the engine so I’m in the process of determining if all the correct stuff is there. I know the thermostat is gone but I don’t know about the flaps, etc. The temp is coming from the oil sending unit. Also, the reason I asked about the compartment is that on a bug or a buggy the air can escape but in the Fiberfab compartment it can only go out the bottom.