Hornet fuel pump

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  • [Deleted User]
    [Deleted User]
    I'm getting closer to getting the Hash back going, I finally got my rebuild kit, now I just need the time to do the rebuild. I'm looking at the orifice for the return line and darn, .030 sure looks like a small hole for the return. It doesn't seem like it will flow enough to make a difference. I guess I'll know once I start driving in hot weather again.



    Harry
  • [Deleted User]
    [Deleted User]
    With all this talk about this or that modification to keep a Hudson running due to fuel delivery problems and "vapor lock", one begins to wonder how the heck did people keep them going when they were buying them new ??



    If they were so famous for vapor locking, one gets a picture of Hudsons all over America, or even the world for that matter, back in the forties or fifties, sitting by the side of the road, or at the drive-ins, or office parking lot, or wherever, with pi**ed off owners cranking away on the starters trying to get the damned thing running again.



    Makes me wonder how they sold the things, because wouldn't they become widely known for this issue, and people begin to steer away from sales lots selling those "unreliable vapor locking Hudsons" ?



    Anybody remember the fifties when new Hudsons were running around out there everywhere? I was just a kid then, but I don't remember my Dad's new Hudsons ever having this problem, even on the long trips we took each summer, or around home. ( although one car he had that was only a week old burned to the ground out in the driveway in the middle of the night ).



    Maybe I shouldn't have mentioned that ---- now we'll have stories of how Hudsons used to burn up due to poor wiring or some such malady. :-)
  • [Deleted User]
    [Deleted User]
    I can't remember one car we had from the forties and fifties that didn't vapor lock on one of our annual trips to the Sierras. That long grade going north on Highway 395 always had turn-outs with cars parked in them waiting for things to cool down, all makes and models. We often left after midnight so we could make the long grade in the cool morning hours. I don't think I ever owned a car made after 1960 that had the problem though so somewhere along the way the problem was cured. AMC and others went to the fuel return line and electric pumps at the back by the tank. No more manual fuel pumps. Plus in the old days everyone was working on cures for vapor locking, from wooden cloths pins clipped on the fuel line to wrapping the line with different materials to act like a heat sink. I don't know about back east but out here in the far west everyone delt with vapor locking as it happened and tried to prevent it, it was common enough though that even after not having a car that would vapor lock for over twenty years I knew what it was the second it happened to the Hash.

    The day it happened though I had been coming up a hill with many stops for six miles on a day where the air temp was over 105, extreme conditions to say the least, it hasn't happened since but on the really hot days I drive my truck.



    Harry
  • Hudsonrules
    Hudsonrules Senior Contributor
    Hi Harry , This is Arnie, I went back to a mechanical fuel pump on my '37 terraplane as the electric fuel pump quit working. I replaced the fuel line from the tank to the carburator, installed one filter before the fuel pump, second filter before the carburator. Hpefully there will not be any vapor locks. Hope you get your'55 back on the road soon. Arnie
  • [Deleted User]
    [Deleted User]
    Thanks Arnie, I am close to getting back on the road, lack of time is my biggest problem. I haven't given up on the Super Six either, just trying to get things lined up to make it work. There is a 49 Super Six Brougham down here for sale, really nice car but way out of my budget. It is a ready to go driver though without any issues, of course I would have to pay dearly to have that convenience. Anyway, I plan on having the electric as a back up once I get the mechanical pump going again.



    Harry
  • [Deleted User]
    [Deleted User]
    Harry Hill wrote:
    I'm getting closer to getting the Hash back going, I finally got my rebuild kit, now I just need the time to do the rebuild. I'm looking at the orifice for the return line and darn, .030 sure looks like a small hole for the return. It doesn't seem like it will flow enough to make a difference. I guess I'll know once I start driving in hot weather again.



    Harry
    The 0.030 is the correct size for the pressure that runs the hudson. We are talking about 41/2 to 7 pounds pressure. Even with both, electric and mechanical pump working you still only have that amount of pressure. Don't let anyone tell you different. Those of you that have my system installed and have a pressure gauge in the carburetor line, start your engine, turn on the electric pump and read the pressure. Tell all what your reading is. Mine shows 5 pounds.
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