Busabim
Registered
Greetings,
I added a second low pressure fuel pump to the 99 Hayabusa. The pump is $30 and some brass fittings another $15. I have the low pressure pump feeding the primary external fuel pump and any extra fuel goes back to the return tank.
There should be no more vapour lock and the fuel pump will always be bathed in fuel (now) and not have to rely on the inefficient gravity feed to work. You can see the top of the low pressure pump feeding directly into the main external fuel assembly: Secondary pumps are common on boats and are designed to run continuously.
Now I have 2 pumps and 2 filters. The pump and filter fit under the tank with no issue and the pump is mounted to the screw that holds the wiring harness clamp. I bought the pump off eboy.
Please see photos to show routing. The fuel filter is elbowed off at 90 degrees and sits upright the same as the pump to allow for easy exchange and for clearance below the tank. The second picture shows most of the fittings.
This is a much more cost effective solution than replacing tanks.
I added a second low pressure fuel pump to the 99 Hayabusa. The pump is $30 and some brass fittings another $15. I have the low pressure pump feeding the primary external fuel pump and any extra fuel goes back to the return tank.
There should be no more vapour lock and the fuel pump will always be bathed in fuel (now) and not have to rely on the inefficient gravity feed to work. You can see the top of the low pressure pump feeding directly into the main external fuel assembly: Secondary pumps are common on boats and are designed to run continuously.
Now I have 2 pumps and 2 filters. The pump and filter fit under the tank with no issue and the pump is mounted to the screw that holds the wiring harness clamp. I bought the pump off eboy.
Please see photos to show routing. The fuel filter is elbowed off at 90 degrees and sits upright the same as the pump to allow for easy exchange and for clearance below the tank. The second picture shows most of the fittings.
This is a much more cost effective solution than replacing tanks.
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