Oil Blowing Out the Breathers

cdub

I Want to Go Fast
Joined
Mar 4, 2004
Sorry if you're seeing this post multiple times, but I don't think I had posted in the proper forum earlier.

I have a ton of oil being blown out of the VC breathers, this is not the "typical" amount of oil these engines are known to get in/out of the breathers. Here are the pertinent facts:

1 - Only happens while driving/under load, does not happen in the garage @ 5-6k RPM
2 - It is not the PCV Valve - blocked it off and tested it, issue was still there
3 - It is not ring blow - Did a leak down test, each cylinder has been pressurized with 150 psi of shop air and show no signs of leakage
4 - It is not the head gasket - same reason as #3
5 - The car drives/feels great, there are no drivability issues
6 - I had ~1k miles on the new engine before this issue showed up.
7 - This started happening on the drive home from Cottons where I had a 3" DP, 42mm external WG and 2.5" SS exhaust system installed.

I am in now way insinuating that install at Cottons caused the issue, just stating that a major upgrade/change occurred just before this issue occurred for the first time. Brian did an excellent job.

My engine builder is convinced that it is related to the new external wastegate, I don't see how this is possible.
 
Did smoke test this morning and there was some smoke getting out at the intake gasket, so I'm assuming that if it can get out at normal atmospheric pressure, under 15-17 lbs of boost, there is significant leak.

Going to pull the intake manifold off and replace the gaskets using "The Right Stuff" gasket sealer & new fel-pro gaskets all the way around.
 
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