RE: Perry Pumps and regulators
Gents,
I cannot find any outlet pressure of the VP20 (preferred for four stroke) , but they seems to be compatible with the VP30 (two stroke),
In the specs of the VP30 I read: It delivers an ideal .25 PSI to any model carburetor from a .15 to a 3.0 cu.in. engine.
The pressure remains constant throughout the entire speed range, making the carburetor adjustment easy and simple.
This means, it is like the fuel level is 9 inch! (24 cm!) above the outlet of the pump, independent of power level. The characteristic of the carburetor has to handle this!
Cees