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1951 F3 Fuel Pump

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Old 01-20-2018, 07:07 AM
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1951 F3 Fuel Pump

I bought a replacement fuel pump for my 1951 F3
they sent me the wrong pump they sent me the one with vacuum inlet /outlet connections. My old one didnít have them. Can I still use this pump Without connecting any vacuum line to it ?
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Old 01-20-2018, 10:24 AM
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I didn't know you could still buy those. I bet someone who wants to run vacuum wipers would love to have that. Pricey tho. Are you going to return it?

I don't think you want to leave the vac connections open, they'd make a lot of noise and it would suck dirt in. Just run a piece of hose from vac inlet to vac outlet?
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Old 01-20-2018, 01:58 PM
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Have read pros and cons about using them and camshaft wear due to 2 pumps. I've did no pump in the rain and it was not fun. Each to his own.
Factory installed them, must not have been that bad.
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Old 01-20-2018, 03:57 PM
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This just came up on the Ford Barn:
https://www.fordbarn.com/forum/showthread.php?t=237493

Based on Charlie NY's recommendation, I wouldn't run it.
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Old 01-21-2018, 06:29 AM
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I went and read at the Ford Barn linked above, what is the one fella talking Mercs
have more power? any truth?
Greg
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Old 01-21-2018, 10:02 AM
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Quote:
Originally Posted by 5851a View Post
Have read pros and cons about using them and camshaft wear due to 2 pumps. I've did no pump in the rain and it was not fun. Each to his own.
Factory installed them, must not have been that bad.
Quote:
Originally Posted by fish pond View Post
I went and read at the Ford Barn linked above, what is the one fella talking Mercs
have more power? any truth?
Greg
h
Did end up putting in this pump . The vaccum does make a noise but itís not that bad . I will purchase a new one same as OEM as spare just in case . thanks for all your help and recommendations .Iíll keep you posted.
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Old 01-21-2018, 11:40 AM
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Quote:
Originally Posted by fish pond View Post
I went and read at the Ford Barn linked above, what is the one fella talking Mercs
have more power? any truth?
Greg
Mercury car engines had a 4" stroke vs. the 3.75" stroke of the Ford engines, giving 255 ci vs 239. It gave more torque and I think 10 more HP, so it's a common hop-up to put a Merc crankshaft in a Ford (with Merc pistons). There's more to it but yes, Merc CAR engines had more power. Mercury Trucks (Canadian) with one exception used Ford 239 engines.
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Old 01-21-2018, 11:03 PM
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My Dad's '51 Ford V8 "Custom" was factory equipped with an AC double action fuel pump. It never gave any trouble and was still on the car when I sold it for him after 22 years. I don't know if the '51 Ford "Deluxe" had the "dual" pump or not? There's not much going on in the vacuum section of the pump unless the wipers are turned on - much like the fuel section, where the diaphragm moves only slightly when the engine is idling. If your truck has electric wipers, I would slip a tight fitting cap on the inlet side of the pump and maybe a cap with a slit in it on the manifold side. I don't think the cap with the slit will blow off, but it might. You could just leave that one off. If you have vacuum wipers, I would definitely connect it up to your wiper motor. Makes a big difference, especially when passing (in the rain) on a two lane road. Otherwise, your wipers would be stationary until you let up on the gas pedal! - Bob
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