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Thread: turbo waste gate boost controler

  1. #1
    Join Date
    Feb 2013
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    turbo waste gate boost controler

    Hi all a quick question has any one removed the waste gate boost controler from thier D2 td5 if so what differance has it made good or bad. Iam told the defender doesn't have this controler if it works without the controler and has no bad effects on the way the car runs how do I do it I can't find anywhere where it explains how to do it thanks for your help.
    Thanks Phil

  2. #2
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    Jul 2019
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    Quote Originally Posted by laney View Post
    Hi all a quick question has any one removed the waste gate boost controler from thier D2 td5 if so what differance has it made good or bad. Iam told the defender doesn't have this controler if it works without the controler and has no bad effects on the way the car runs how do I do it I can't find anywhere where it explains how to do it thanks for your help.
    Thanks Phil
    I did it on my first D2, didn't make much difference imo. Other factors at play?? turbo waste gate boost controler Haven't bothered to try it on my current disco.
    If you go to YouTube and search for 'td5 wastegate modulator', youll get some of the info you are looking for....
    Example..

  3. #3
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    Jul 2017
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    Victoria
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    290
    I am running an boost controller and running around 25psi and 29psi peak

  4. #4
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    Dec 2016
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    New Lambton, NSW
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    If you suspect it's faulty buy a new one and replace the connection hoses with new ones

    Here's how it works Wastegate Modulator: Operation | DiscoTD5.com

    Lemo

  5. #5
    Join Date
    Nov 2015
    Location
    Merbein
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    I thought the article was wrong. The air intake pre turbo is only ever under vacuum not pressure and the waste gate actuator is vacuum driven, the modulator controlling the amount of vacuum delivered to the waste gate.

    ""When full boost is reached a control signal is sent to the wastegate modulator, and a vacuum is applied to the wastegate valve.

    Interestingly this sentence incorrectly states that vacuum rather than boost operates the waste gate valve. This is often excused as a typo but there is clearly an error in the statement.""

    I would say the Rave statement is correct.
    PeterN
    70' 164 Manual Volvo 227,000miles play car.
    2001 BMW R1150RT 105,000Km "Bruce"
    2000 D2 TD5 Auto 270,000Km and climbing."Leaky" (VK3JUG)
    2016 ST 3.0l Patrol "slug" work hack 60,000Km.

  6. #6
    Join Date
    Jan 2011
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    West Gippsland
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    865

    turbo waste gate boost controler

    Quote Originally Posted by knuts2au View Post
    I thought the article was wrong. The air intake pre turbo is only ever under vacuum not pressure and the waste gate actuator is vacuum driven, the modulator controlling the amount of vacuum delivered to the waste gate.

    ""When full boost is reached a control signal is sent to the wastegate modulator, and a vacuum is applied to the wastegate valve.

    Interestingly this sentence incorrectly states that vacuum rather than boost operates the waste gate valve. This is often excused as a typo but there is clearly an error in the statement.""

    I would say the Rave statement is correct.
    No RAVE is in error on that point. The TD5 Garrett turbo waste-gate is operated by boost pressure. One method used to test the operation of the waste-gate actuator is to apply pressure with a common sports ball hand inflation pump.
    1999 build D2 TD5 AT, Mantec snorkel, 2" LRA spring lift, ARB on board air, CMM air ram CDL shifter, swag & gold pans .....

  7. #7
    Join Date
    Jul 2014
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    west of Transylvania
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    2,810
    Also it's quite obvious that RAVE is wrong as long as the modulator's hoses are connected to the turbo outlet and the intake, non of them is linked to the vacuum circuit... Offtrack's article is the real thing
    Discovery Td5 (2000), manual, tuned

  8. #8
    Join Date
    Nov 2015
    Location
    Merbein
    Posts
    143
    Yep,my bad it is fed post turbo..
    PeterN
    70' 164 Manual Volvo 227,000miles play car.
    2001 BMW R1150RT 105,000Km "Bruce"
    2000 D2 TD5 Auto 270,000Km and climbing."Leaky" (VK3JUG)
    2016 ST 3.0l Patrol "slug" work hack 60,000Km.

  9. #9
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    Feb 2013
    Location
    Queensland
    Posts
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    My original question stil stands doe's the discovery td5 need this modulator as the defender doesn't have one.

  10. #10
    Join Date
    Jul 2019
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    EastnSubsMelb
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    353
    Quote Originally Posted by laney View Post
    My original question stil stands doe's the discovery td5 need this modulator as the defender doesn't have one.
    Let's say no, it doesn't. turbo waste gate boost controler
    But it's there for a reason.......

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