Ted the pump has been in my Tank for over ten years with zero problems and I can use E-10 without issues so far. I did switch the pump so I can turn it off it I wish.



Frank/Rebop

Bristol, In ( by Elkhart) 

I installed the FAST fuel injection system on my Crown with 312, Mummert heads, intake and MSD ignition about 10years ago (just recently sold the car).
I bought a fuel tank with the opening to install an in-tank fuel pump, bought the adapter plate to install an in-tank fuel pump and bent dual 3/8 ss fuel lines for return system. There  was a choice between Walbro and Denso pumps. Experience with Walbro pumps was they are very noisy and more failure prone than Denso. The fuel pump I used was a Denso fuel pump for a twin turbo Datsun.  I needed 37 PSIG for the FI system. Most FI pumps will not produce that pressure I had a hard time getting the pressure info from Denso,  they were very reluctant, finally got the info. Ted is 100% correct on the internal tank rubber fuel lines as the fuel will attack the outer surface of the hose leave a pile of residual sludge floating in the tank. General use fuel hoses have internal materials fuel resistant. One needs a fuel hose internal and external fuel resistant. These are available, just very expensive. I paid over 20$ US for less than a foot. About a foot is needed for both line connections, just make sure to clamp hoses secure. I used Oetiker ear clamps. Never replaced the lines after installing. PS  The adapter plate is designed to drizzle a small amount of fuel over the pump when low tank to provide cooling to the pump

I have been both ways on the fuel pumps regarding internal versus external.  External is definitely easier but it’s important that the pumps be mounted low or at a position not higher than the bottom of the tank.  The major concern with internally mounted pumps would be with any rubber connections and electrical connections.  Without any data to support otherwise, I would have to say that the internal pumps would be the most reliable in the long run but would be more difficult to service when the time came to do so.  As with any internally mounted fuel pump, it’s important to never run the tanks down below the fuel pump and even worse, running the tanks empty of fuel.

Lorena, Texas (South of Waco)

[/quote] Soldering all the electrical connections does not guarantee that this will fix the problem as soldering actually speeds up that corrosion process in some instances.  You’ll not see soldered connections in an airplane, just crimped terminals.
[quote] You're right.....but corrosion is not really a problem with soldered connections when rosin core solder is used.....meaning NEVER use plumbing solder or plumbing flux in any soldered electrical connection. 

Soldered aircraft connections are "prohibited" because of vibration. Soldered connections will eventually break right at the connector.

There are aircraft that are over 70 years old (My 1947 Stinson for example) that have all original crimped connections and none haven't failed yet. Ground connections OTOH, can be a problem if they're not shiny and tight where they are bolted/screwed on.

Ted, my question about the FITECH sysem is which fuel pump would you choose if you wanted the most reliable one?







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1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally!

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This post was created using OpenSuSE Linux x64 and Firefox

I've been running dual quads for 5 years only using my once since original startup. My engine is a stock 40 over 292. Yes they are a matched set of Carter WCFB's for 1953 Oldsmobiles on an Eldbrock manifold. I did it for looks but they have stayed because they have absolutely trouble free. I use 1 oz. of Sta-Bil in every fillup. My wife just commented last Friday night going to a local car gathering how you could not feel the engine running while we waited at a traffic light.

As for power it will take what ever I want give it. I have never floored it from a stop or drag race the car. It will run right up to 100 with all 8 barrels open and the speedo is dead on. I have a 3-speed auto trans and a 2.74 rear end and fuel milage is ok with me. If it sits for 1-2 weeks one full pump of the foot feed will set the choke (about 1/3) and idle. At a month I crank it 10-15 seconds and the full foot feed to set the choke and starts right up.

Good luck which ever you choose.

56 Vic, B'Ville 200 MPH Club Member, So Cal.

The Carter pumps use grommets in the bracket to suspend the pump.  As long as you use a length of rubber hose between hard line ( or maybe even rubberized support for the hard line), it is pretty quiet.


Lawrenceville, GA

Besides having the appropriate intake manifold for the throttle body that's being used, Installation of the aftermarket fuel injection units requires good electrical connections including the grounds.  The wide band oxygen sensors are very sensitive to vacuum and header/exhaust leaks so those must be eliminated.  Some units require a return fuel line back to the tank; I’ve worked around some of those by just having the return line go back in at the inlet side of the externally mounted fuel pump.  A good charging system with an alternator would be a prerequisite.
 
Age is going to be your enemy with anything electrical as any terminal corrosion that takes place will have the systems not necessarily failing but instead doing funny stuff that may be hard to trouble shoot.  Reduced voltage or voltage spikes also creates some unique tuning problems.  Soldering all the electrical connections does not guarantee that this will fix the problem as soldering actually speeds up that corrosion process in some instances.  You’ll not see soldered connections in an airplane, just crimped terminals.

Lorena, Texas (South of Waco)

I have isolated my blue Holley by suspending from a 1/2" thick piece of a truck mud flap and don't hardly hear it but my cars exhaust is not the quietest but the exhaust does exit out the back like it should on a 55 bird. So how big are the Edelbrocks? I'm running 2-600s now with the secondary air flap crap removed. Any thoughts how much I increased the cfm?

  Vic Correnti

Not against an electric fuel pump, but not happy with the noise of the Holley blue pump, either.  I have a Edelbrock 257 that I have gone back through, and picked up a little flow over your figures, and a couple of larger Edelbrock carbs that I think would be worth some et.  With the possibility of another Masters of Motors Challenge this fall, I may be really busy with a couple of engine builds, and a trip to Alaska.  Looks like a full Spring and Summer again.  Joe-JDC

JDC

Are you against using an electric fuel pump without the mechanical pump, sure makes starting easy after sitting. I have had no failures with the red or the blue Holley pumps. I know there are better pumps out there too. So now that you threw me a bone I have to ask what kind of changes required? Right now I have installed a different clutch system and have to work through some growing pains. Any chance you going to the Shootout this year?

  Vic Correnti