04-12-2014, 05:06 PM
Best option really is to use a lift pump to draw your fuel of choice to a swirl pot as CLOSE to the injection pump as possible - you can then allow the overflow back to the tank and your injection pump feeds from the swirl pot.
This also means you can pre-heat the oil in the swirl pot if so desired.
This way you don't have the problems of applying pressure into the fuel pump, any excess pressure is simply bled back to the tank, since that only ever ends in problems, since positive pressure increases advance, you end up shifting the advance curve lower in the rev range. Just ensure your return line if of a bigger diameter than your feed line, that way you can guarantee there'll never be pressure build up in the swirl pot.
This also means you can pre-heat the oil in the swirl pot if so desired.
This way you don't have the problems of applying pressure into the fuel pump, any excess pressure is simply bled back to the tank, since that only ever ends in problems, since positive pressure increases advance, you end up shifting the advance curve lower in the rev range. Just ensure your return line if of a bigger diameter than your feed line, that way you can guarantee there'll never be pressure build up in the swirl pot.
