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Project FD RX7 Restomod: Part 32 – Deatschwerks DW400 Fuel Pump and Fixing Fuel Starvation

  • Billy Johnson

FD RX7 Fuel Tank pump collector
With the fuel hanger removed, we inspected the stock plastic fuel pump baffle.

FD RX7 fuel tank pump collector
The Fuel pump and filter sit inside the baffle while the fuel level float sits outside the baffle and in the main tank area.

FD RX7 fuel tank pump collector
We emptied the tank and cleaned the baffle before modifying it.

FD RX7 fuel tank pump collector drill holes
We drilled 3 holes for the surge tank check valves.

FD RX7 fuel tank pump collector with check valvesWe installed the three 1” surge tank check valves (PN: CV100) in the back, right, and left walls of the factory fuel pump baffle. This will allow fuel to enter and fill the baffle, which will turn into a surge tank, during braking or cornering.

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Related Topics
  • earl's
  • Deatschwerks
  • fuel starvation
  • Fuel Pump
  • earls performance plumbing
  • hydramat
  • holley hydramat
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WATCH: Reviving Our $500 EP3: 33 WHP Gains with 100% CARB-Legal Mods!

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Project EF Civic Racecar: Making it Stop

  • Dave Zipf
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3 comments
  1. Mitch says:
    February 9, 2026 at 12:47 pm

    Those Radium studs, where have you been all my life?! Damn I need to get those.

    Reply
  2. Z says:
    February 21, 2026 at 12:36 am

    This build has included quite a few aspects I will be implementing in mine! Unfortunately the custom surge tank setup is more complex and I will be going with the Radium surge tank as a drop in solution.

    It seems like E85 is the main fuel for the car, has Auxillary Injection with Methanol also been considered?
    Curious to hear thoughts on the why or why not of AI in this use case.

    Reply
  3. Andy says:
    March 3, 2026 at 12:57 pm

    Some awesome details and information in here, thanks for documenting everything so thoroughly Billy!

    Reply

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