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Discussion Starter · #1 ·
as above whats the differnce between the two. And how come these surge/swirl tanks have 4 connections? if im connecting my fuel line to one then surely i need an inlet and a outlet? whats the other two connections for?
 

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The four fittings are:

overflow from surge tank to fuel tank,
inlet from fuel tank,
Return from fuel rail,
outlet to external fuel pump/fuel rail,

Swirl pots are designed so the liquid "swirls" around inside the tank. In regards to fuel, this helps prevent undesirable fuel aeration.

I'd post up a pic but I don't know how lol
 
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