RE: Perry Pumps and regulators
Lynton,
Feeding the engine normally, also connected the oscillating pump and running the engine (and have the pump on nearly same level of fuel in the supply tank) it has to be possible the have a fuel flow in the bottle holding the end of the line 23 cm or lower above the centre of the pump. The head is about 0,25 PSI then, factory value.
The RPM of the engine isn't much important.
This is a method I use myself , but never try this with other brand pumps than own built.
density of fuel is 0.7 of density of water I think. (Nitro?)
.
Success and show me the result when you try the method.
Cees