[Healeys] Why carry spares

[Oudesluys]

Fitting /and/ operating fuel pumps in series will double the fuel 
pressure, so you may have to regulate the pressure near the carbs. 
Fitting them parallel will not effect the fuel pressure.
Fitting fuel pumps in series that can be operated alternatively (one at 
the time) will not present extra fuel pressure, but if one is getting 
clogged up both pumps will fail to deliver, whilst fitting them parallel 
you would still have one functioning.
In both ways of fitting, use a separate switch for each pump
Fitting an extra fuel filter in the line between tank and pump may cause 
suction problems because of increased resistance. Always fit a fuel 
filter in the pressure line.
In general crud sucked from the tank will not damage or affect the pump. 
In very extreme cases the course gauze filter may get blocked.
If you have severe problems with dirt in the fuel fit two or more fuel 
filters in parallel to increase capacity.

Kees Oudesluijs
NL


Mitch schreef op 19-3-2014 1:49:
> Hey Tom,Steve,Jim,John,Michael, everyone
> B
> Thanks..........what do you think about aboutB  plumbing in series..... 2 SU
> electronic neg. ground pumpsB  with a fuel filter between tank and pumps and a
> gas filter just before the carbs?..........I already have all these components
> ..........Does anyone have a diagram of this set-up with wiring instructions
> etc.......so I could run one or the other...........this would cure fuel pump
> issues (I hope)
> B
> Mitch
>
> ----- Original Message -----
>
> From: "BJ8Healeys" <sbyers at ec.rr.com>
> To: "LIST, HEALEY" <healeys at autox.team.net>
> Sent: Monday, March 17, 2014 9:53:24 AM
> Subject: Re: [Healeys] Why carry spares
>
> Mitch, I have had a generic (Autozone) back-up pump plumbed into my fuel
> system in series with the SU on my BJ8 for many years. B It's a comfort to
> know that if the main pump fails (or stumbles, as it does occasionally) then
> all I have to do is reach under the dash and flip the switch to the other
> pump. B On several occasions over the years, while hundreds of miles from
> home, I have experienced a momentary failure of the main pump (SU) pump when
> it would fail to start the car or the engine would stutter as if it were
> running out of fuel. B The last time this happened was in I-20 traffic
> approaching Atlanta with trucks on both sides of me. B Flipping the switch to
> the other pump solved the problem immediately. B Eventually, the SU pump did
> fail terminally on the road and the back-up pump got me home where it was
> more convenient to fix the problem. B
> On my long trips, I typically use the SU for the outbound leg and the backup
> for the return, just to make sure both are working normally.
>
> Steve Byers
> HBJ8L/36666
> BJ8 Registry
> AHCA Delegate at Large
> Havelock, NC USA
>
> B
>
> -----Original Message-----
> From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
> On Behalf Of Mitch
> Sent: Monday, March 17, 2014 7:24 AM
> To: Alan Seigrist
> Cc: LIST, HEALEY
> Subject: Re: [Healeys] Why carry spares
>
> Ok fellas,
>
> I have a new SU electronic fuel pump that I bought last year for my
> BJ8....to keep as a spare. I also bought a new one for my BN4 project about
> 6 years ago (still sitting on the shelf.
>
> You're saying they might not operate when the time comes that I need them?
> ......I will probably be on the side of the freeway in the rain....you have
> to be kidding me.
>
>
> So what is the absolute BEST,RELIABLE fuel pump set-up for my cars........?
> I cannot even imagine going to the hassle of removing and replacing the SU
> FUEL PUMP on the side of the road.............and then not work!
>
> Mitchell
>
> 1966 BJ8
>
> 1959 BN4
> Suggested annual donation B $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>
> Healeys at autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/dayton21@comcast.net
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation  $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>
> Healeys at autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/coudesluijs@chello.nl
>
>
>
> -----
> Geen virus gevonden in dit bericht.
> Gecontroleerd door AVG - www.avg.com
> Versie: 2014.0.4336 / Virusdatabase: 3722/7210 - datum van uitgifte: 03/18/14