Cam sprockets?
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This is a discussion on Cam sprockets? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Does anyone know a good replacement for the OEM cam gears? Evidently mine are borked. Beamed at your face at ...

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    Cam sprockets?

    Does anyone know a good replacement for the OEM cam gears? Evidently mine are borked.

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    OMG WTF MainFrame's Avatar
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    OEM.. there are aftermarket adjustable gears (OBX and BC), which is a fantastic idea in theory. Unfortunately they seem to have a very high failure rate.

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    zax
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    Quote Originally Posted by MainFrame View Post
    OEM.. there are aftermarket adjustable gears (OBX and BC), which is a fantastic idea in theory. Unfortunately they seem to have a very high failure rate.
    Then why are mine cracked?!
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    So the teeth are sheared?

    I'd imagine belt failure would typically occur before the sprocket failed. That's bizarre.
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    Quote Originally Posted by Rambo View Post
    So the teeth are sheared?

    I'd imagine belt failure would typically occur before the sprocket failed. That's bizarre.
    No, two have a hairline fracture. The other two are seemingly OK, but have accumulated a bunch of composite dust behind the sprockets.
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    I'd suspect something gone a bit wrong during the last cam belt change. Maybe too much tension on the cam gears when trying to remove them or something. I'd replace them with OEM (no surprise there though).
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    Yea, it's a little unusual for them to crack.. but not unheard of. I too would just go with stock.

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    Quote Originally Posted by SD_GR View Post
    I'd suspect something gone a bit wrong during the last cam belt change. Maybe too much tension on the cam gears when trying to remove them or something. I'd replace them with OEM (no surprise there though).
    SD: This is the FIRST time the timing belt has been changed! :-/
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    That is alarming. Consider sending a letter to Subaru and asking them to accept your old sprockets so they can examine them. These are not expendable parts.
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