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Date:         Wed, 16 Aug 2000 23:59:09 -0500
Reply-To:     Marshall Ruskin <mruskin@pangea.ca>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Marshall Ruskin <mruskin@pangea.ca>
Subject:      Re: Why use VW Fuel Pumps instead of Alternatives?
Comments: To: Dennis Haynes <Dhaynes57@email.msn.com>
Content-Type: text/plain; charset="iso-8859-1"

Thank you Dennis for the very informative post.

I enjoyed reading it, and I can honestly say, VW fuel pumps are no longer a mystery to me. :>)

Thanks again.

Marshall Ruskin 84 Westy "Leader of the Pack" Winnipeg, Canada

> Actually, that pump is used on some American vehicles such as Ford Escorts. > The VW pump is what is what is known as a "Roller Cell" design. That is, it > uses a series of rollers in a cage to pump the fluid. Other designs are > either of the gear type or multi stage centrifugal. The roller cell is > extremely rugged and will last along time. The usual causes of failure is > running dry, (mechanical damage, or sucking air due to leaky inlet hoses or > operating in a low fuel condition on steep grades or taking corners too > fast, or debris jamming the rotors. A rare situation can exist where the > pump will suck the right mixture of air and fuel causing a "quick" fire in > the pump. Remember the gasoline actually flows over the armature and brush > assembly on the motor. Another cause of failure can be a clogged fuel filter > or other restriction. This will cause the pump to work hard and strain the > motor. > > The largest advantage of the stock pump is it's resistance to vapor lock. > Ask any one who's owned a FORD Van from 92 to 96 about the 40k mile vapor > locking, burning up fuel pump that FORD had a $700 upgrade for. That is what > it cost me when my last motor home died in Florida at 41k miles. When the > tow truck came, he knew what happened by my 2 hour drive from Disney and the > year of my camper. > > Anyway, if you really need to save money, ask your flaps to get you a > rebuilt pump from PYHTON. They cost about half of new and I've had good luck > with them. > > Dennis >? > > > Hi Listees! > > A quick question regarding alternative fuel pumps for Vanagons: > > Is there any reason why a domestic FI fuel pump could not be used on a > Vanagon? > > In my ignorance of the details of this subject, it seemed to me that: > > 1. the existing pressure regulator will/should? deal with fuel pressure > control OK; > 2. most fuel pumps should use similar amounts of current/power, and > definitiely will use 12 V; > 3. fuel filters are an unknown?? > > So, is there a good reason why we should not save money - and buy a less > expensive domestic fuel pump, oh great Listees? > > Thanks In Advance > > Marshall Ruskin > 84 Westy "Leader of the Pack" > Winnipeg, Canada > > >


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