[urq] Better fuel pump needed

[Ado Sigal]

Two things should be taken care of: fuel pressure and volume. Typical 
EFI fuel pressure is 2-3 bars, while typical CIS system fuel pressure 
is  5-6 bars. So after choosing the pump with correct pressure, one must 
find the right volume for your application. As you ordered one, better 
make sure that both parameters are correct. Since you are using MS, have 
a chat with MS crowd, or f/pump specialist.

Good luck,

Ado



Ben Swann wrote:

>OK - anyhow I ordered this:
>
>Walbro GSL392 Fuel Pump 
>External in-line pump up to 600hp they are rated at 255l/h. They are the equivalent to
>the BOSCH 044. Made in US by Walbro they are excellent quality and come with a full
>fitting kit including brackets and instructions. If you are considering an 044 this is a
>great cheaper alternative.
>
>Should be fine and I got 2 for the cost of the comparable Bosch unit, but hope I won't
>need the second one - might run them in parallel.
>
>Ben
>
>-----Original Message-----
>From: Brandon Rogers [mailto:brogers at terrix.com] 
>Sent: Friday, October 05, 2007 3:56 PM
>To: 'Ben Swann'; urq at audifans.com
>Cc: quattro at audifans.com
>Subject: RE: [urq] Better fuel pump needed
>
>Maybe try listening to the input you do get.  Yes you don't have a stock
>application - but its still 10V and frankly I seriously doubt you need
>more fuel than an RS2'd 20V running 22+ psi.  You asked for a
>recommendation and I gave you one - if you don't want the input then
>don't ask. Go buy your 044 pump and let us know how it works.
>
>Brandon
>
>-----Original Message-----
>From: Ben Swann [mailto:benswann at comcast.net] 
>Sent: Friday, October 05, 2007 1:30 PM
>To: 'Brandon Rogers'; urq at audifans.com
>Cc: quattro at audifans.com
>Subject: RE: [urq] Better fuel pump needed
>
>
>OK - I just wish folks would just answer my questions.  The part about
>Autohaus AZ is helpful, as that provides a potential source for the
>solution.
>
>I don't have a stock application and need a higher flow, higher output
>pump.  I the recent past I have seen many Bosch pumps that came as
>"remanufactured" even though not specified as such when purchasing.
>Some may have been new.  They were garbage.
>
>I want a high output high flow high reliability pump.  Sources are
>helpful.
>
>Thanks,
>
>Ben
>
>-----Original Message-----
>From: Brandon Rogers [mailto:brogers at terrix.com] 
>Sent: Friday, October 05, 2007 3:31 PM
>To: 'Ben Swann'; urq at audifans.com
>Cc: quattro at audifans.com
>Subject: RE: [urq] Better fuel pump needed
>
>Rebuilt?  I don't recall the one I got being a rebuilt.  Why Spend $300
>when you can get the right part for ~$100 less.  Call Scott Mockry or
>Autohaus AZ.
>
>Brandon
>
>-----Original Message-----
>From: Ben Swann [mailto:benswann at comcast.net] 
>Sent: Friday, October 05, 2007 1:17 PM
>To: 'Brandon Rogers'; urq at audifans.com
>Cc: quattro at audifans.com
>Subject: RE: [urq] Better fuel pump needed
>
>As I mentioned, the rebuild quality of pumps were not good a few years
>back.  I just don't want to make the same mistake again.
>
>Indeed I should be able to get a good new Bosch pump for under $300.  I
>will use the latest highest output pump I can find.  The pump for the NG
>cars was a bit higher output than the UrQ one, but I agree, the older
>pump should be fine - just why not get the beefier pump?
>
>Ben
>
>-----Original Message-----
>From: Brandon Rogers [mailto:brogers at terrix.com] 
>Sent: Friday, October 05, 2007 3:19 PM
>To: 'Ben Swann'; urq at audifans.com
>Cc: quattro at audifans.com
>Subject: RE: [urq] Better fuel pump needed
>
>I have a plain old stock urq fuel pump with my urq with somewhat RS2'd
>3B pushing 22+ psi - fuel is not an issue - so it shouldn't be for you
>either.  Make sure you are getting good voltage to the pump.  Stock urq
>pumps were about $190 last I heard....
>
>Brandon
>
>-----Original Message-----
>From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On
>Behalf Of Ben Swann
>Sent: Friday, October 05, 2007 9:36 AM
>To: urq at audifans.com
>Cc: quattro at audifans.com; 'Ben Swann'
>Subject: [urq] Better fuel pump needed
>
>
>Turns out one of the problems I've had with my Megasuirt EFI
>installation and tuning has been a crappy fuel pump.  It limits flow and
>the engine was running crappy at 5k and now is cutting out at lower RPM
>and even idle too - buzzing is very load. Now this is the third or
>fourth pump I've installed in this car.  The first pump was totally
>seized from setting when I got the car about 5 years ago.  I purged the
>lines and flushed the tank and installed a pre-filter.  I installed an
>87.5 Coupe GT/Model 90 pump - higher flow and pressure. The first one
>was defective out of the box.  The second one is now acting up.  Tank
>was just flushed and I routinely replace the pre-filters even though
>they look clean, so I don't think any garbage is getting into the pump.
>
>
>So I am looking for recommendations for the best pump to use since I no
>longer have CIS. I would be nice to have the output fitting mate with
>the stock fitting, but mainly I want a reliable high output and pressure
>pump.  The inlet is already using a larger hose.  I'm tired of doing
>jobs 2 and 3 times, so this time I won't try to skimp on cost, although
>the ones I've been putting in a Bosch Replacements.
>
>Recommendations?
>
>Ben
>
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