Plumbing in a C27
I have a 1974 C27. It has a hose that connects from the bildge pump, through the engine compartment, and out through the stern. The hose is smaller in diameter than the passageway between the bilge and engine compartment so water draines into the bildge directly. When I first got the boat I didn't keep the engine compartment as clean as I should, and the passageway would clog and water would build up in the engine compartment. I then would have to take a wire coat hanger and rod the passageway to set the water flowing once more. Not really a problem now since I keep my engine compartment pretty clean and dry.This passageway is below the sole and connects the engine compartment with the bilge. It sounds like you don't have one or you can't find it. If I didn't have one I would drill one out and place a conduit through.Hope this helps.