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?
That would be a “yup”.
Did you use a head gasket for a 2004 or 2007 head?
2007 head
2004 head
Must use a 2007 head gasket with a 2007 head.
Last edited by Eg.h2o; 10-29-2019 at 05:33 AM.
Jnova (10-29-2019)
it was done by a repair shop so i'm not sure.
would a 2007 head gasket seal on a 2004 block?
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.
Last edited by Eg.h2o; 10-31-2019 at 02:13 AM. Reason: Smoking crack
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.Originally Posted by Jnova
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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