Thank you for your interest in Water Pumps Direct. Standard dewatering pumps will effectively handle pumping distances of up to about 300 feet. Once you start exceeding that, you either need to find a more powerful pump or increase your discharge hose/piping in order to overcome the friction loss that is created inside the hose/piping. So, to answer your question, the Honda WB30 nor any other pump that we offer, would not handle your 1400 foot distance and by reducing the discharge as you mentioned, you will not only reduce any possible flow to zero, you would also add the possibility of severely damaging your pump, which would not be covered under any warranty. It is never recommended to reduce the suction and/or discharge hose/pipe from the original port size.