question(s) for the Mechanics

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 85COE, Mar 25, 2020.

  1. LameMule

    LameMule Road Train Member

    Joined:
    Jan 19, 2020
    Messages:
    1,148
    Thanks Received:
    7,418
    Location:
    Montana
    0
    I've got a couple items that could be helpful with them hills... you would need a functional pyrometer though! 20200804_202144.jpg
     
    650cat425 Thanks this.
  2. Dino soar

    Dino soar Road Train Member

    Joined:
    Dec 8, 2017
    Messages:
    4,805
    Thanks Received:
    26,922
    0
    Unless your engine is an L10, Volvo is wrong.

    The big cam engines are identical 855 cubic inch heavy duty truck engines.

    The only differences between them are the compression ratio, the timing, the Pistons, the turbo, the injectors, and the the pump calibration.

    In other words the block is the same but the internals that create the power are interchangeable but different depending on the horsepower.

    Now if you have an L 10 that is a different situation. That is a medium duty engine.

    If you are not sure which it is you can trace it by the CPL tag which is on the accessory drive or by the serial number that is on the block under the head on the driver side.

    All of the big cam engine blocks are stamped big cam down near the cam followers.
     
    650cat425 Thanks this.
  3. 85COE

    85COE Light Load Member

    Joined:
    Aug 6, 2019
    Messages:
    242
    Thanks Received:
    505
    Location:
    Columbus, Ohio
    0
    are those bushings?

    here are two engine tags CPL.jpg model tag.jpg
     
    650cat425 Thanks this.
  4. Dino soar

    Dino soar Road Train Member

    Joined:
    Dec 8, 2017
    Messages:
    4,805
    Thanks Received:
    26,922
    0
    The tag says 855. That is the cubic inch displacement of the big cam.

    And whatever you do if you're going to turn the horsepower up learn all that's involved with the dangers and whatnot and make a good decision.

    Don't just turn the fuel up or change the button.
     
    650cat425 and LameMule Thank this.
  5. LameMule

    LameMule Road Train Member

    Joined:
    Jan 19, 2020
    Messages:
    1,148
    Thanks Received:
    7,418
    Location:
    Montana
    0
    They're buttons for your injection pump. They increase your fueling substantially. One is a #10 and the other is a #25
     
    650cat425 Thanks this.
  6. AModelCat

    AModelCat Road Train Member

    Joined:
    Jul 7, 2015
    Messages:
    29,390
    Thanks Received:
    161,302
    Location:
    Canuckistan
    0
    My old man ran a CAT 3406 PCTA, rated at 375 hp with no issues grossing near 88k lbs in the mountains. You may not be the quickest up the hill but you'll make it.
     
    650cat425 and Dino soar Thank this.
  7. 85COE

    85COE Light Load Member

    Joined:
    Aug 6, 2019
    Messages:
    242
    Thanks Received:
    505
    Location:
    Columbus, Ohio
    0

    If I slowed down to 40-50mph, that'd be one thing, I just don't want it to take me an additional 2 hours. I know I80 in the keystone very well.
     
    650cat425 Thanks this.
  8. Dino soar

    Dino soar Road Train Member

    Joined:
    Dec 8, 2017
    Messages:
    4,805
    Thanks Received:
    26,922
    0
    Your gearing has a lot to do with how the truck will pull.

    What are your rears geared at?
     
    650cat425 Thanks this.
  9. 85COE

    85COE Light Load Member

    Joined:
    Aug 6, 2019
    Messages:
    242
    Thanks Received:
    505
    Location:
    Columbus, Ohio
    0
    Truth be told, I haven't the foggiest idea
     
    650cat425 Thanks this.
  10. 85COE

    85COE Light Load Member

    Joined:
    Aug 6, 2019
    Messages:
    242
    Thanks Received:
    505
    Location:
    Columbus, Ohio
    0
    Just called my volvo expert, and they said (based on the VIN) they're geared at 3.55

    shouldn't that be 355? or is the period supposed to be there?
     
    Dino soar and 650cat425 Thank this.