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Thread: Has anyone installed the Power Pump fuel pump?

  1. #51
    Senior Member smallclone's Avatar
    Join Date:  Jul 2011

    Location:  FL

    Posts:    110

    My VIN:    6982

    Quote Originally Posted by Bitsyncmaster View Post
    Most of the OEM style pumps have a check valve that is "screwed" on to the top of the pump.
    Right. With these gm style ones tho. The dcmh ones are the only ones i know that require an external check valve. Wondering why that is

  2. #52
    Senior Member Bitsyncmaster's Avatar
    Join Date:  May 2011

    Location:  Leonardtown, MD

    Posts:    9,000

    My VIN:    03572

    Quote Originally Posted by smallclone View Post
    Right. With these gm style ones tho. The dcmh ones are the only ones i know that require an external check valve. Wondering why that is
    I think there is an internal check valve in the new ones but the early units DMCH sold some of the check valves would not hold long enough.
    Dave M vin 03572
    http://dm-eng.weebly.com/

  3. #53
    '82 T3 FABombjoy's Avatar
    Join Date:  May 2011

    Location:  Lansing, MI

    Posts:    1,168

    My VIN:    10270

    You really should use an external valve with the new OEM style pumps and Kjet.

    I removed the check valve after converting to EFI and you can hear the accumulator spring expand as the fuel drains back after key off.
    Luke S :: 10270 :: 82 Grey 5-Speed :: Single Watercooled T3 .60/.48 :: Borla Exhaust :: MSD Ignition :: MS3X Fully SFI Odd-fire EFI :: DevilsOwn Methanol Injection

  4. #54
    Senior Member Chris 16409's Avatar
    Join Date:  May 2011

    Location:  Fresno, CA.

    Posts:    1,380

    My VIN:    16409

    Here is the check valve:

    https://www.usplastic.com/catalog/it...5394&catid=956

    It's the one I use and I believe it is the same one DMC uses.
    Chris Miles

    For Better or Worse I own a DeLorean!
    1983 Grey Manual, VIN #16409, Fresno, California

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