840cpl cummins

Discussion in 'Freightliner Forum' started by 86flc120, Feb 1, 2023.

  1. 86flc120

    86flc120 Bobtail Member

    Jan 31, 2023
    I have a few questions, question 1 should the pump for this cpl be a afc pump
    2 what should fuel pressure be, it's showing 100psi rail pressure right now
    3 can this engine and pump set up support upgraded injectors. It does pretty good right now but it's definitely not the power of the old motor that a driver tore up, the old motor was supposed to be rebuilt and the fuel pressure hadn't been touched, all it had was a 17 button
    Current pump has a 17 button in jt now, I checked out of curiosity.

    Have the old engine that cracked a piston planning to build it to 550-600 next year or so
    Does any one sell steel pistons for these or are we stuck with the aluminum pistons, I understand I need to match cpl for new parts, I plan on doing a complete rebuild, cam, crank, pistons, rods so forth can some one tell me the best cpl to get for matching parts for these goals.
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