Fuel System Issues

[5point0anthony]

Is the fuel hat modified? Have you ever replaced the pumps in it?

I have a billet hat with dual 465’s

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[aleccesarenriquez]

not true. I’ve been running 2 walbro 465’s for months in a gt350 hat with zero problems. They siphon just fine.

Yeah the Sai Li kits run modified 350 hats if I'm not mistaken. I brought it up because I was told if the pumps are not installed correctly, there can be a vacuum issue that prevents the crossover from working properly (or something along those lines).

 

[FastCarFanBoy]

not true. I’ve been running 2 walbro 465’s for months in a gt350 hat with zero problems. They siphon just fine.

Your pumps aren’t siphoning anything because you don’t have it hooked up. You may be getting some siphon action from the difference in fuel level from driver to passengers side, but the way the bucket works is the Venturi ports pull fuel through the siphon and Help keep the bucket filled. You also have the 2nd pumps Venturi recirculating into the bucket to assist filling. Without the pumps helping to refill all you have to fill the bucket in a less that half tank situation is the flapper valve at the base of the bucket and that valve cannot keep up with two 400lph pumps when fuel demand is high.

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