EdKiefer
correct,, it is a well engineered top oilier . but one can put anything in there ,open up the needle valve a couple turns and it feeds pretty fast. im going to see what Top Fuel in metered amounts will do to FE. If it has effect that will be interesting, if not the top oil is all the good for the power plant
HS type adjust from the bottom the newer HIF type adjusts from the side
MMO seems to work good in the dashpot .
here is a schematic on the HS type
