[Diy_efi] Fuel pump sizing?

[Merchant, Adnan]

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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