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Detroit ddec2 Question

Discussion in 'Ask An Owner Operator' started by Truckermick, Dec 16, 2020.

Page 1 of 4
  1. Dec 16, 2020 #1
    Truckermick

    Truckermick Bobtail Member

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    Dec 16, 2020
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    Hi guys,
    Wondering if anyone could help me out. I recently purchased a peterbilt 379 with a stock ddec2 .it was a local truck but I plan to run otr. The person I purchased it from said it had a inframe about 4 yrs ago (no paperwork)and a new bull gear 3 yrs ago as Well as A Oil Cooler ( has paperwork for The Oil Cooler) said the previous Owner Did The Work.. when i test Drove, no lag in the engine No Issues When empty or bobtailing didnt overheat but when pulling a load it gets hot. the head gasket is leaking and it has some blow by. My question is, I know it will need a head gasket From what I Can See but while I have the head open should I replace anything else on it? I've never owned a detriot engine before so any advice will be appreciated . Thanks
     
    Last edited: Dec 17, 2020
    Truckermick, Dec 16, 2020
    Truckermick, Dec 16, 2020
    #1
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  3. Dec 17, 2020 #2
    magoo68

    magoo68 Road Train Member

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    st malo mb canada
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    I think those years didn’t have oil squirters for the pistons so you had to watch how high you turned up the power otherwise they got hot .
     
    magoo68, Dec 17, 2020
    magoo68, Dec 17, 2020
    #2
    Rideandrepair and Truckermick Thank this.
  4. Dec 17, 2020 #3
    062

    062 Road Train Member

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    Unless everything looks brand new, then I would do a inframe while the head is off. Then you’ll know what you have and will be good to go for several years.
     
    062, Dec 17, 2020
    062, Dec 17, 2020
    #3
    Rideandrepair, Truckermick and Ruthless Thank this.
  5. Dec 17, 2020 #4
    Truckermick

    Truckermick Bobtail Member

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    Thats what I was Thinking Too For Peace Of Mind ,Thank You. would you happen to know what would be a good Inframe kit? Also what would you recommend for Injectors?
     
    Last edited: Dec 17, 2020
    Truckermick, Dec 17, 2020
    Truckermick, Dec 17, 2020
    #4
    Rideandrepair Thanks this.
  7. Dec 17, 2020 #5
    baha

    baha Road Train Member

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    Those det. eng. most all have some blow/by,Just start out pulling the a/c conn. off to side without taking the a/c lines louse, then you can pull the air to air intake cooler off and clean the FT. side of rad. off and both sides of air cooler (tape up both ends before cleaning) then clean A/C con. then you should have more air going thru. your rad. and cool running motor with a small amount of work, if your head gasket is just leaking some oil down side of block and not putting coolant into oil its something that some of them just do?
     
    baha, Dec 17, 2020
    baha, Dec 17, 2020
    #5
    Rideandrepair and Truckermick Thank this.
  8. Dec 17, 2020 #6
    Truckermick

    Truckermick Bobtail Member

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    Truckermick, Dec 17, 2020
    Truckermick, Dec 17, 2020
    #6
  9. Dec 17, 2020 #7
    Truckermick

    Truckermick Bobtail Member

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    Good info, Thank you
     
    Truckermick, Dec 17, 2020
    Truckermick, Dec 17, 2020
    #7
    Rideandrepair Thanks this.
  10. Dec 17, 2020 #8
    Brettj3876

    Brettj3876 Road Train Member

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    If no paperwork it probably didn't happen. Who throws out those records especially if it brings 5k+ or better when your selling it
     
    Brettj3876, Dec 17, 2020
    Brettj3876, Dec 17, 2020
    #8
    AModelCat and Rideandrepair Thank this.
  11. Dec 17, 2020 #9
    abyliks

    abyliks Road Train Member

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    With no paper work that inframe never happened, hope your price reflected that. Just inframe it if you are going into it
     
    abyliks, Dec 17, 2020
    abyliks, Dec 17, 2020
    #9
    Rideandrepair Thanks this.
  12. Dec 17, 2020 #10
    Truckermick

    Truckermick Bobtail Member

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    Truckermick, Dec 17, 2020
    Truckermick, Dec 17, 2020
    #10
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