Results 1 to 7 of 7

Thread: electric fuel pump

  1. #1
    Commander Member
    Join Date
    Jan 2017
    Location
    Ohio
    Posts
    36

    electric fuel pump

    Can anyone give guidance on an electric fuel pump install (62 Hawk)? I want to include an oil pressure switch for safety but not sure what type of switch to look for, where and how to mount it, and how to wire it....any help would be most appreciated..thanks...Lance

  2. #2
    President Member swvalcon's Avatar
    Join Date
    Apr 2012
    Location
    princeton mn
    Posts
    3,120
    Check with Summit racing they should have what you need. It looks almost like a oil pressure sending unit. Just lets the starter work but if no oil pressure kills power to the coil and pump as soon as the starter circuit is turned off. This way if you loose oil pressure it shuts off the pump.

  3. #3
    President Member bensherb's Avatar
    Join Date
    Jun 2015
    Location
    Tracy / Goleta Ca.
    Posts
    1,093
    Just get an oil pressure switch for an idiot light, screw it into an oil gallery and wire it to the ground wire on your pump; the pump will not run without oil pressure. Of course it won't help you get it started when the fuel has evaporated from your carb either. If you want it to work for priming (which is why many use one) you'll need to add a switch to bypass the oil pressure switch. (just a switch with one side in the wire before the oil pressure switch and the other to ground)

    62-hawk- ELECTRIC FUEL PUMP WIRING with bypass.jpg
    Last edited by bensherb; 03-16-2019 at 09:11 PM.

  4. #4
    President Member
    Join Date
    Apr 2016
    Location
    Westbrook, MN
    Posts
    762
    If you have an oil pressure switch, it will not come on 'til you have oil pressure, ergo, it is of no value in starting a car that has not run in a couple weeks (or months) unless you also run an oil pressure switch bypass circuit so you can run pump before starting engine. I do not use the switch but use the elec. pump for starting and for mech pump failure. And, yes, electric pumps can also fail. Be sure to put filter B4 the pump! Fuse the circuit!

  5. #5
    President Member
    Join Date
    Jul 2010
    Location
    Above the Equator
    Posts
    1,949
    Which is why the impact switch used in millions of Fords and likely available from a JY for a few dollars is more practical.

    You can still use an oil pressure switch if you want. There are toggle switchs available with three positions. Off/On/Momentarily On. If the momentarily on (12 v+) was wired to the pump - and a relay that grounded the pumps (-) side the pump would run to start the car and once oil pressure was established the switch could be released from the momentarily on to the on position and continue to run - though the relay has disengaged.

    The down side is that it would take two hands, one to keep the switch on and one to turn the key. So, mounting the switch in proximity to your free hand is important. The second issue is that if the car stalled and the float bowls were dry one would have to take their hands off the steering wheel to attempt to restart the car. So, definitely a "Do at Your Own Risk" option. Re-read the paragraph one above for a better option.
    '64 Lark Type, powered by '85 Corvette L-98 (carburetor), 700R4, - CASO to the Max.

  6. #6
    President Member bensherb's Avatar
    Join Date
    Jun 2015
    Location
    Tracy / Goleta Ca.
    Posts
    1,093
    Yea, a million ways to do it. I was just answering his question as simply as possible. It sound as though he has no experiance or knowledge in this area.

  7. #7
    President Member swvalcon's Avatar
    Join Date
    Apr 2012
    Location
    princeton mn
    Posts
    3,120
    wittsend I do believe that both Jegs and Speedway sell a oil pressure switch that is wired so when on the starter side it has power to the coil but when on the main side only has power if you have oil pressure.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •