Date: Sat, 2 Oct 2004 14:26:03 -0500
Reply-To: Al and Sue Brase <albeeee@MCHSI.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Al and Sue Brase <albeeee@MCHSI.COM>
Subject: Re: Substitute Fuel Pump #
In-Reply-To: <200410021558.i92FwvLA010975@deimos.aros.net>
Content-Type: text/plain; charset=us-ascii; format=flowed
That cheap one is probably a Facet, which makes around 5 psi, whic is
only suitable for carbs. What you need is a rotary (Vane, I think) pump,
with a LOT more pressure and volume. It has to be able to maintain this
pressure while still delivering enough flow to the injectors. Otherwise
the engine will run lean. Even the Bronco/ Ranger pump will probably
deliver less with the smaller inlet. I think the inlet hose is a couple
of mm bigger like 12 or 13mm.
I don't know about others, but my right foot spends quite a bit of time
flat on the floor. Not to cruise, but to climb hills and pass. I don't
want it running lean and have that extra air in there looking to combine
with the piston tops ar the cylinder heads.
I'd consider it a limp home option, not a preferred fix. There are a
lot of good used ones out there.
Al Brase
Vanagons
Mark Edwards wrote:
>> I have been using a fuel pump for one of the Ford Bronco/Ranger
>>vehicles that has a Bosch look-alike fuel injection system much like our
>>Vanagons. The NAPA part # is 2P74028, and the price is around $60.00.
>>
>>
>
>
>I looked this up on the NAPA site and the very brief specs say it is 30-40
>GPH and the pressure is 4-6
>
>I then checked on an 89 Bronco with 2.9l and the only ones I found were
>the in-tank variety, but they were rated at a pressure of 40
>
>Looking up the pump for a Vanagon, got several choices, all of which were
>in the 30-40 GPH range, but the pressure varied from 2.5-4.5 all the way
>up to 73, which is certainly higher than most pumps I came across for a
>variety of vehicles. Do all Vanangon pumps need that much pressure?
>
>I also came across a "universal" pump listed under Vanagon, that is not
>the cylinder shape of our pumps, but it was an odd looking square part.
>The number is BK 6101051 rated at 30 GPH and 2.5 - 4.5 pressure, and only
>$35.....
>
>Now, I am not about to use this on my van as the full time pump, but what
>about having it as a spare? Does a pressure rating of 2.5-4.5 fit any
>minimum spec for the vanagon?
>
>The mount is totally different, but a little work up front with some
>pre-drilled holes, would allow it to be hung down there in the event of an
>emergency.
>
>Anyway, why the difference in pressure specs? Does it really matter, and
>given the proper inlet and outlet sizes, wouldn't something like this
>strange looking pump be a good spare? For $35, I would carry one of those
>around with me just in case.
>
>Mark
>
>
>
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