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New turbo whining

Discussion in 'Kenworth Forum' started by tsavory, Oct 12, 2014.

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  1. Oct 12, 2014 #1
    tsavory

    tsavory Road Train Member

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    Ok I had my OR7205 turbo go come apart on me the other day I went and bought a T704604-11 from Diesel Injection it supposed to have same internals as the OR7923 with a custom cast house to dissipate tge heat better all seems fine except at approximately 22-24 psi of boost I am hearing a whine in it it dont seem to happen below or above that just right in that range. Anyone have a clue what it maybe?
    I tried spraying a little either near each boot and clamp just to see if it speed up the engine thinking a clamp may be not sealed all the way but nothing.
     
    tsavory, Oct 12, 2014
    tsavory, Oct 12, 2014
    #1
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  3. Oct 13, 2014 #2
    Skate-Board

    Skate-Board Road Train Member

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    My turbo on my Detroit whined when it was new and took about a month to go away.
     
    Skate-Board, Oct 13, 2014
    Skate-Board, Oct 13, 2014
    #2
  4. Oct 13, 2014 #3
    tsavory

    tsavory Road Train Member

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    Ok so may just be break in
     
    tsavory, Oct 13, 2014
    tsavory, Oct 13, 2014
    #3
  5. Oct 13, 2014 #4
    Pipe 40

    Pipe 40 Light Load Member

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    I had one on a Mack do that didn't go away and they replaced the internals
     
    Pipe 40, Oct 13, 2014
    Pipe 40, Oct 13, 2014
    #4
  7. Oct 13, 2014 #5
    Oscar the KW

    Oscar the KW Going Tarpless

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    When you posted about that in the other thread, I don't remember you saying anything about cleaning the intake piping and the charge air cooler. It might be possible that you sucked in some debris and have damaged the fins on the new turbo if that's the case.
     
    Oscar the KW, Oct 13, 2014
    Oscar the KW, Oct 13, 2014
    #5
    tsavory Thanks this.
  8. Oct 13, 2014 #6
    tsavory

    tsavory Road Train Member

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    Ouch I sure hope not will be taking it apart to check it out. when changing did not find any debris in any of the tubing but other than the first little bit did not look real deep.
     
    tsavory, Oct 13, 2014
    tsavory, Oct 13, 2014
    #6
  9. Oct 13, 2014 #7
    Oscar the KW

    Oscar the KW Going Tarpless

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    Those pieces can go everywhere, real common for them to blow debris back into the air cleaner(s) as well.
     
    Oscar the KW, Oct 13, 2014
    Oscar the KW, Oct 13, 2014
    #7
  10. Oct 13, 2014 #8
    tsavory

    tsavory Road Train Member

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    Guess I will be up early and tearing it apart to see if an fins are messed up and checking air cleaner and atleast the ports on the cooler dang it I hope nothing went wrong if so guess it gives me a reason to swap it ti a BW sooner rather than later just needed to get going and the DI was close and in stock
     
    tsavory, Oct 13, 2014
    tsavory, Oct 13, 2014
    #8
  11. Oct 14, 2014 #9
    rollin coal

    rollin coal Road Train Member

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    I did a thread a couple of weeks ago when my turbo blew up in the garage section. You most definitely need to take all the piping off and apart piece by piece up to the air filter. Throw the air filter away, look inside of it, bet money it has pieces if turbo fins in it. Clean the housing replace with new filter. Clean all those elbows really good, reassemble. Remove hump boots and that piping clean all that. At least shop vac out your CAC on the hot side. Really it's a good idea to remove it and steam clean the oil out. I was told by several people taking all that stuff before the air goes into the turbo apart and making #### sure it was clean was important in order to not destroy the new turbo. After finding all the pieces I now see why. You may end up with another turbo failure on your hands soon.
     
    rollin coal, Oct 14, 2014
    rollin coal, Oct 14, 2014
    #9
    tsavory Thanks this.
  12. Oct 14, 2014 #10
    tsavory

    tsavory Road Train Member

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    Took and pulled apart fins look fine no play and took a rag wiped out all tubing I could get off to filter and the CAC did pick up a few chips and kinda a dust. Hope it will last till I get home and can pull everything
     
    tsavory, Oct 14, 2014
    tsavory, Oct 14, 2014
    #10
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