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Thread: 4AGE20V Blacktop hydraulic cam belt tensioner mod to make fixed by a through bolt.

  1. #1
    Junior Member
    Join Date
    Jan 2012
    Name
    David
    State
    WA
    Location
    Busselton
    Country
    Australia
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    4

    Default 4AGE20V Blacktop hydraulic cam belt tensioner mod to make fixed by a through bolt.

    Hi y'all,

    I have a 4AGE20V Blacktop in my Westfield SE. I'm about to renew the cam belt. I have always worried about the hydraulic tensioner as I've been told it's troublesome and failure is catastrophic on a Blacktop as it's an interference engine.

    Has anyone here done this mod? I believe you can use a 10mm Cap screw (Allen head) and a locking nut. Does anyone know bolt length etc?

    As this is basically a trackday car it spends most of it's time between 4000-8000 and a valve crash would be the end of it....and I REALLY enjoy the 4AGE!!

    Any suggestions greatly appreciated.

    Thanks
    David
    Busselton
    West Australia

    ps....Keep isolated and keep safe.Click image for larger version. 

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  2. #2
    Senior Member
    Join Date
    Jun 2011
    Name
    james
    State
    oxford
    Location
    general area
    Country
    England
    Posts
    129

    Default

    This is cheap insurance: https://flos.ie/shop/20v-tensioner/

  3. #3
    Noooob
    Join Date
    Jun 2010
    Name
    Matt
    State
    NSW
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    Campbelltown
    Country
    Australia
    Posts
    5,231

    Default

    The blacktop tensioner is a 100k service item... have never had an issue with them, but always replaced with the belt.

    Some companies sell the drilled out tensioner with the appropriate sized bolt already.
    Ae86 Drivingclub - Toyota AE86 Car Club where AE86 | KE70 | Toyota 86 / GT86 | Subaru BRZ | Scion FRS owners

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