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    Thread: Aveo head swap oil leak

    1. #1
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      Aveo head swap oil leak

      2004 aveo with used head installed from 2007 aveo and it is leaking oil between head and block on backside under the intake. i've discovered 04 and 05 has a single oil return and 06 and newer have dual return oil ports. Could this be my oil leak issue?



    2. #2
      2004 1.6 Auto Rust Free
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      That would be a “yup”.
      Did you use a head gasket for a 2004 or 2007 head?

      2007 head
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      2004 head

      Must use a 2007 head gasket with a 2007 head.
      Last edited by Eg.h2o; 10-29-2019 at 05:33 AM.

    3. The Following User Says Thank You to Eg.h2o For This Useful Post:

      Jnova (10-29-2019)

    4. #3
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      it was done by a repair shop so i'm not sure.

    5. #4
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      would a 2007 head gasket seal on a 2004 block?

    6. #5
      2004 1.6 Auto Rust Free
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      Maybe wiith a 2007 gasket. From my understanding, the back drain will just be blocked off if you use the correct gasket (the block is solid at that area on a 2004) If you use the 2004 gasket, the drain on the head won’t have any gasket fully surrounding it......thus the leak.

      After looking further at a 2004 block, I don’t see enough there for the rear drain to seal against....so please disregard my prior info. I think you can’t use the dual drain head on a single drain block. Sorry.
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      Last edited by Eg.h2o; 10-31-2019 at 02:13 AM. Reason: Smoking crack

    7. #6
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      hmmm........guess it's time to visit the repair shop and see what they have to say.
      Thanks again.

    8. #7
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      Dual return oil ports on the 06/07 heads?

      Quote Originally Posted by Jnova View Post
      hmmm........guess it's time to visit the repair shop and see what they have to say.
      Thanks again.
      So I am in the same boat. I ordered a 2004-2007 (apparently not) head from ebay and after installing it noticed there were two oil ports. The one in the back, intake side is leaking a lot of oil.

      What did the machine shop do?

      I am considering bringing the head to a local machine shop and having them plug the second drain.

      I also have heard that in performance engines sometimes they will use bearings to do this.





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