I use regular fuel/oil hose from the auto parts store. I also tend to use banjos on the engine unless I have an old collapsed oil pipe I can cut off.
I buy a brass pipe bushing for the UFM and cut the threads off and run the correct die down it to install it in the oil tank. I install a male barb the correct size for the hose in the bushing. (Can be seen in second photo). Almost all the small parts for the racers have to made up or salvaged. The good parts go to the street bikes.
I believe that is a 1/2" hose on the feed and a 5/16" hose on the scavenge to match the pipes on the head.
I try to match things up, but you can get away with a slight mismatch, but not a large one.
David
I buy a brass pipe bushing for the UFM and cut the threads off and run the correct die down it to install it in the oil tank. I install a male barb the correct size for the hose in the bushing. (Can be seen in second photo). Almost all the small parts for the racers have to made up or salvaged. The good parts go to the street bikes.
I believe that is a 1/2" hose on the feed and a 5/16" hose on the scavenge to match the pipes on the head.
I try to match things up, but you can get away with a slight mismatch, but not a large one.
David