Fuelling multiple carbs

[Kiwicranbrook]

For those of you who have dual or even triple carbs, are you running the factory fuel pump or have you upgraded to electric? My fuel pump is starting to seep fuel out and I'm wondering if it's worth replacing as I am planning on upgrading the manifold shortly. 

Thanks

[casper50]

factory with duals

 

[Barabbas]

I had the stock fuel pump with my Dual Carbs--get a rebuild kit from here:  http://www.then-now-auto.com/fuel-pumps/

[Adam H P15 D30]

Factory fuel pump with 2 Carter/Webers

[Plymouthy Adams]

does this sound right....?       stock pump delivers  6 oz per 15 revs.....600 rpm idle divided by 15 = 40 times the deliverly rate of 6 0z for total 240 ounces or 1.875 GPM and if idled for an hour and had full flow that would equate to 112.5 gallons in an hour....

[normanpitkin]

Rebuilt factory pump with a 6 volt electric pump to prime when cold, running triple carbs on a chrysler 1941

[T120]

Unrestricted flow from a mechanical fuel pump I believe should be approximately 1 quart/min at 500 RPM - I could be wrong.

[Kiwicranbrook]

I see companies like rock auto sell a whole new pump. Are they worth while or am I best to get a seal kit for the one I have?

 

[Barabbas]

Airtech (I think that's the name) makes a remanufactured fuel pump that had serious reliablity issues--personallyI tried 3 different ones--the best lasted 3,000 miles  and the other two lasted less than 5 minutes.  Now my experience is 3 years old so things may hav changed but I had no problems once I used the rebuild kit from then and now....had over 5,000 miles on the rebuilt fuel pump when I sold my car and it was still running strong with no leaks

[Plymouthy Adams]

for anyone getting a fuel pump these days, seems the most common failure is the pivot pin....a close inspection of this and maybe an investment of an additional 1.50 buying a suitable high grade substitute pin from the hardware store will give you some longevity.  You need a quality pivot point as there is a bit of pressure when in operation combined with the fact it's operation cycle is once per cam revolution....lots of stress, cheap will not withstand the punishment..

[JOHN EDGE]

Run the dual carter/weber carbs and run a 6volt posi grd carter electric fuel pump. Didn't care for the closeness on my dual exhaust to the factory fuel pump. Removed the factory pump and made a block off plate set the fuel pressure regulator to 4 psi and so far the system runs flawlessly 

[Kiwicranbrook]

Cheers John, that's the way I have decided to go, for the same reason. Would be annoying to rebuild the fuel pump only to find it's in the way when I change manifolds. Only issue I can see is finding somewhere at the back to mount the fuel pump. As far as I'm aware the pump should be lower than the tank? 

[t-bag]

John Edge where did you get that spin on oil filter mount. Nice looking stone bay. T -bay Orange city fl.

[Tony Dombrowicki]

I am running duals and am using the factory fuel pump, I also have installed a electric pump to help in starting the car after it sits for awhile.  The car however runs on the mechanical pump 

[48hoopty]

I'm using an electric pump with regulator. Seems the stock mechanical gets too hot in vegas summers by the manifold and vapor locks. Crappy gas don't help. 

[JOHN EDGE]

I tryed the stock fuel pump when I first added the dual Fenton style manifolds but soon found that vapor lock was a problem. Tryed making heat shields but would always get some drive ability problem. Moved fuel lines and has run with the electric pump without any problems. Mounted the electric fuel pump to the left rear frame rail just forward of the fuel tank.  The spin on oil filter housing is an OTB item. They make some really nice period looking items.  I have several items from OTB on my wagon. They will also do some custom stuff. I agree about the fuel quality and the vapor rate problems. Methanol sucks