08 780 D13 - possible to limit boost pressure?

Discussion in 'Volvo Forum' started by justsomeguy, Aug 13, 2015.

  1. Aug 13, 2015 #1
    justsomeguy

    justsomeguy Bobtail Member

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    Owner has a bootleg vcads setup but hasn't been able to find any obvious boost setting. He'd like to lower it because he's running with a cracked head (until he can bank enough to replace the head) and any boost over 25 or 30ish blows all the water out the system, lol.

    Anyone know if there's a mechanical way to limit the boost on a D13 from this era, or any other way?
     
    justsomeguy, Aug 13, 2015
    justsomeguy, Aug 13, 2015
    #1
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  3. Aug 13, 2015 #2
    nasriza

    nasriza Road Train Member

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    I don't think it's possible to limit boost on D13 just dont press the accelerator as hard and that's only way but when it comes time to regen he's going to blow all that #### out anyway, and make sure it's head and not cups or cracked liner
     
    nasriza, Aug 13, 2015
    nasriza, Aug 13, 2015
    #2
    justsomeguy Thanks this.
  4. Aug 13, 2015 #3
    justsomeguy

    justsomeguy Bobtail Member

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    Cups were just replaced (and apparently engine already had the new steel cups which the shop neglected to tell him so probably they didn't need replacing anyway).

    Mechanic said he's never seen a blown head gasket on a D13 but has seen cracked heads. I want to be sure too but the only way to do that is to pull the head, not really something he's in a position to do himself.

    He also *cough* has the regen canister completely pulled and a little fish tank aerator air pump pressurizing the delta p which is extending the time between needed vcad resets of the derate events.

    Like I said, limping along.

    I see your avatar/ASE patch - have you seen many bad head gaskets on D13s? Or any?
     
    justsomeguy, Aug 13, 2015
    justsomeguy, Aug 13, 2015
    #3
  5. Aug 14, 2015 #4
    nasriza

    nasriza Road Train Member

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    No bad head gaskets not even one on d12 or d13 not as many cracked head on either one. About six months ago we had to remove head about 3 times on one engine until we finaly saw cylinder number 3 with a hairline crack on the liner after that we did the rebuilt and never had any issues but it was a lot of down time most of the time if the shop that did the cups is good then its not cups but sometimes these shops are #### specially when it comes to volvo engines and they break more #### than they fix i have seen it a couple of times cups being done and still makes pressure because they did not properly clean the seating surface for the cup or did now properly swedge it in there like its supposed to be, In your case im sure time will tell if they send the head out the machine shop should be able to tell if the head is cracked.
     
    nasriza, Aug 14, 2015
    nasriza, Aug 14, 2015
    #4
    justsomeguy Thanks this.
  7. Aug 14, 2015 #5
    benrab

    benrab Medium Load Member

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    Hi, Egr cooler should be check first in your situation of air in the cooling system with high boost.
    Hope this can help.
    Ben
     
    benrab, Aug 14, 2015
    benrab, Aug 14, 2015
    #5
    KB3MMX Thanks this.
  8. Aug 16, 2015 #6
    KB3MMX

    KB3MMX Road Train Member

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    ^^ Had this on D16. Like Ben said, new EGR cooler fixed it.
     
    KB3MMX, Aug 16, 2015
    KB3MMX, Aug 16, 2015
    #6
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