I just got done rebuilding my d16z6 and am having some oil leak issues... It leaking on the flywheels and timing belt sides.. I also have ported and shimmed my z6 pump.
And it only leaks when it is running well that when the most oil leaks... I have just changed my oil pump seal with a oem one and have bought the flywheels side on to but if it still continues to leak i dont think a new seal will fix it... I have never had a oil leak this bad... I dont know what could be causing this...

 

sounds like the pan gasket to me, did you replace the pan gasket?

 

no i havent but i seriously doubt it would leak this bad....

 

well you said you changed the oil pump seal and the rear main seal right ? only leaves one place, unless you damaged the new seals in the install. And if you just rebuilt it why did you not change the pan gasket?

 

yeh i just changed the oil pump seal to confirm it was the problem... See my crank was polished to. i guess i work on it tomorrow see if i can fix it

 

Good luck man let us know what ya find out

 

Looks like you are right it was a combination of the seals i am going to use some silicon to stop the oil pan gasket from leaking... I am trying to avoid changing the rear one. Ha