Preheat oven to 180º C
Soak raisins in water until needed
Combine oil, eggs, sugar, orange juice in a small bowl
Combine flour, spice, walnuts, salts, baking powder and baking soda in a large bowl
Add the contents of the small bowl to the large bowl
Drain the raisins from above
Add the raisins to the large bowl
Add the carrots to the large bowl
Mix
Pour into 2 greased loaf tins
Bake at 180º C until brown (50-60 min)
Remove and leave to cool to room temperature