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Re: [T3] Fuel Pump Specs


Pumps don't deliver "pressure", they deliver "flow". 
A  restriction in the line after the pump (like the
fuel pressure regulator) is what makes "pressure". 
The pump merely has to be able to pump fuel against
that pressure to operate.  Increasing the flow w/o
touching the FPR will increase line pressure. 
Twisting the adjustment bolt on the FPR will alter
line pressure w/o altering pump flow.  So, the two are
related, but can be adjusted independently, so you
can't really get pump flow from the pressure w/o
knowing the restrictions.

SOME pumps are internally regulated to a certain
outlet pressure, but I don't believe this is true of
the Bosch rotary pump.  

--- "Iturzaeta , Joseph " <JIturzaeta@kbhome.com>
wrote:

> I have been following the conversation about the
> fuel pump. I had a
> question of my own. In my hanes manual it says that
> the fuel lines are
> pressurized at 28 P.S.I. Does the pump itself put
> out 28 PSI? and how
> much of a flow is that (ex: 50 GPH)?
> 
>
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