[Diy_efi] Fuel pump sizing?

[Nick Starai]

Lynden sums up the fuel pump sizing in his previous post. I just wanted to
add that an inline with no pump in the tank will work fine. Near the
bottom of the tank is good, but obviously you'll need a filter on the
end of the pickup tube :)

Nick Starai

On Tue, 3 Dec 2002, Merchant, Adnan wrote:

> Hi,
>
> I've looked through the archives but couldn't find how I would go about
> sizing a fuel pump for an EFI application.
>
> The engine is a carb conversion, which means the fuel tank won't accommodate
> a pump.   Would an external in-line pump pull from a tube going in from the
> top of the tank or would I need a pre-pump like some cars have?   Does it
> make sense to draw fuel from the bottom of the tank, such as from the drain
> plug?   I realize that sediments would be an issue but other than that is
> there any reason one shouldn't?
>
> The engine is a 3-liter inline six, normally aspirated, with 19lb/hr
> injectors.   I'd guess it will produce around 175 hp and 200 lb-ft of
> torque.   What lb/hr pump should I use and is there a specific unit you'd
> recommend?   I've heard that an excessive flow rate could cause fuel boiling
> and separation.
>
> Thanks, as usual, for your help.
>
> Regards,
> Adnan
>
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