Turbo boost pressure

Discussion in 'Peugeot' started by bartiny, Sep 11, 2015.

  1. bartiny

    bartiny

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    Hi,
    Does anybody know what the correct boost pressure should be on a 1996 Peugeot boxer 2.5 td Please.

    I have looked on google and I have found 1 answer of 1 Bar, does this sound about right?

    I had a seized waste gate and the actuator rod was bent, so all freed off now and the rod straightened, just wondered what to set it at.

    Thanks (y)
     
  2. tonyidle

    tonyidle Funster

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    .
     
  3. bartiny

    bartiny

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    :confused:
     
  4. pappajohn

    pappajohn Funster Life Member

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    Dont know the exact pressure for your engine but 14psi sounds about right.
     
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  5. bartiny

    bartiny

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    Thank you (y)
     
  6. andy63

    andy63 Funster

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    Typical boost pressure could vary from 5/6 psi up to 15 depending on engine speed and load..
    That figure could rise to nearer 28psi max boost on a tuned/mapped engine I think..
    I think my max pressure on a Ford 2.4 tdci is in the region of 1.4 bar but it's a while since I played about with the torque app which displays the boost pressure as you drive..
    Ta andy
     
  7. pappajohn

    pappajohn Funster Life Member

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    Dont forget though....this is an old school, mechanical injection engine...not a modern common rail computer controlled jobby.
     
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  8. bartiny

    bartiny

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    Cheers Andy, I think my set up is a bit more basic than yours, its a mechanical diaphragm that works off the pressure build up in the turbo, once set, thats it, the waste gate starts to open at the set pressure, so I assume that the pressure does not go above the preset pressure :unsure: But not 100% on that.
    (y)
     
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  9. andy63

    andy63 Funster

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    Yea think I get it.. :) you need to set a max boost pressure ie the pressure your waste gate opens at..
    My old tranny wasn't turbo and present one has a variable vane set up which is what @pappajohn was reminding me of....well hope you get there.
    Ta andy
     
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  10. bartiny

    bartiny

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    I have set it at 15 psi, took it for a run round 10 mls, All seems ok, just wondered if a couple of psi either way would make much difference?
     
  11. andy63

    andy63 Funster

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    If she is running well with no excess smoke then don't see any benefit in increasing it unless you alter the fuelling as well..
    Hope that's a result ..and mot emissions are okay. ..but it sounds like it's easily altered.
    Ta Andy.
     
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  12. bartiny

    bartiny

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    Yep easily altered, lock nut threaded bar, just a PITA to get to:LOL:(y)
     
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