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Thread: bleed valve?

  1. #1
    Regular Member madman's Avatar
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    Default bleed valve?

    a mate has said about fitting an in car bleed valve to increase boost on my 2.0 dti. any one fitted one of these and what sort of improvments can i expect?
    cheers

  2. #2
    Regular Member duncan2008's Avatar
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    as far as i have read on here playing with the dti engine aint advisable as the fuel pumps are very fragile and expensive! i have a dti 2.0 aswell i turned the actuator a few turns and it did make a difference to boost but not alot! im a tech so if mine breaks i can repair myself thats why i took the risk!

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    Regular Member big rich's Avatar
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    Vehicle : Vectra gsi

    Trim : Full heated leather

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    i hate bleed valves they cause problems m8

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    Regular Member Penfold101's Avatar
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    You should try jet engine bleed valves mate - they're a pain when they stick...

  5. #5
    Regular Member madman's Avatar
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    cheers guys. i'll stick with changing the looks of the car then. cant go ******ing owt up that way

  6. #6
    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

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    A bleed valve goes in the feed line to the actuator to change the pressure controlling the waste gate. Depending on what model you have it could be effective if done right. Many diesels work on vacuum though and work in the opposite way from that which the bleed valves are intended to work with. In those cases you would reduce performance considerably. Tuning up the fuel pressure at the pump should be possible and adjusting the waste gate to give more would both give you good gains.

  7. #7
    Regular Member madman's Avatar
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    so adjusting the wastegate acuator rod and upping fuel pressure is a safe bet ? where is the fuel pump situated and is it easy to increase pressure or replace with an uprated pump? i just want a little more than 100 lame donkeys

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    Trim : Elegance

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    Quote Originally Posted by duncan2008 View Post
    as far as i have read on here playing with the dti engine aint advisable as the fuel pumps are very fragile and expensive! i have a dti 2.0 aswell i turned the actuator a few turns and it did make a difference to boost but not alot! im a tech so if mine breaks i can repair myself thats why i took the risk!
    how do you do this??? is it easy and can it be reversed if it doesnt change anything(or a small insignificant change)????
    cheers, mick.

  9. #9
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    Default

    ok so wheres the actuator

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