Mission accomplished. The chinese fuel pump after some surgery ends up a nice fit in place of the original fuel pump. Rated at 3,5 bar at 90lit/h, pressure and quantity is going to be adequate at all times.
The elastic base which holds the fuel pump from turning when it starts and stops. The lower side of the fuel pump needs to fit to the rubber cavities. So some surgery was needed.
Modified Chinese fuel pump
Original fuel pump for comparison
Upper side of the pump had some extra plastic around the connections that needs removing, in order to fit in the cage.
The shape of the original fuel pump is slightly different to the Chinese imitation so the shorter supporting cage is not functional. The outer larger cage needs some spacers in order to reach the aluminum pump nest, so longer bolts and nuts rectify that imperfection.
So a complete set includes 2 longer bolts 1.5cm M5, 2 nuts and and an o-ring 60X3 viton since it usually gets damaged. I also include a small o-ring at the intake of the pump and an alouminum spacer to be installed at the bottom of the bronze pipe.
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