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1951 F3 Fuel Pump

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Old 01-20-2018, 06:07 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, 09:24 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, 12:58 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, 02:57 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, 05:29 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, 09:02 AM
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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.
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, 10:40 AM
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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, 10:03 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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