2Grease an 8 x 4 x 3 inch loaf pan. Mix the flour with the sugar, baking powder, baking soda, salt, raisins, walnuts, and coconut in a large bowl. Preheat the oven to 350 degrees. Combine the eggs, mashed banana, and oil; mix until smooth. Add the liquid ingredients to the flour mixture, stirring just until the flour is moistened. Pour the batter into the prepared pan. Bake for 50 to 55 minutes or until a pick inserted in the center comes out clean. Let stand on a wire rack for 10 minutes before removing from the pan to cool completely on the rack.