I have a 1997 Silverton with twin 454 fuel injected engines. I purchased two racor water seperators / fuel filters with the steel bowl. When I went to install them I noticed that the inputs are 1/4 npft ports the existing fuel lines are huge 1/2" ID. to the fuel pump. after the fuel pump there is a small filter on the engine that is 1/4 lines. But on the racor directions it says the seperator must be placed before the fuel pump. I also noticed on this boat there are return lines as well. So my question is can I reduce the 1/2 lines to 1/4" with brass fittings or will this screw things up? Or can I install it after the fuel pump where the lines are 1/4" even though racor says not to?
