Date:         Tue, 23 Jul 2013 14:57:51 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: Fuel pump noise? Fuel filters.
Comments: To: neil n <musomuso@GMAIL.COM>
In-Reply-To:  <CAB2RwfiittgMHZnvPx0-8gHfFuu3OeqO7+6mkk7n-m=S3f3r6Q@mail.g
              mail.com>
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At 01:17 PM 7/23/2013, neil n wrote:
>I'm sure Davids' images would be better,

Creeper! ;-)

>but heres a thread with images of
>a disassembled Vanagon fuel pump:
>
>http://forums.pelicanparts.com/off-topic-discussions/737082-inside-failed-fuel-pump.html

Those are great.  And the pump is in good shape.  That image near the
bottom of the pump rotor with three of the five rollers, and the
housing it spins in -- that pump shoves through sixty-plus liters per
hour of gasoline at high pressure by pulling it into the gap on one
side of the rotor as it increases to what must be easily a millimeter
or better, and rolling that droplet of gasoline around to the other
side where it gets squeezed out the side when the gap closes.  Five
times per revolution, and with the dimensions you could figure out
how fast it has to be turning.  Pretty fast.

Yours,
d