Oil coming out of the breather

89BlackTGP · February 11, 2010, 05:54:00 PM

So i am driving my 5 speed TGP as a DD right now since im down a car.. I had the engine rebulit no less than 1500 miles and just about a year ago.. I changed the oil 2 days ago.. but ever since i had this engine running i had oil coming out of the breather.. It wasnt alot but now its alot and drips onto the Manifold and creates smoke.. I have no clue what it can be since since its all brand new.. PCV has been changed so thats outta the question.. here is a few pics of how bad it is.. There is a puddle on the valve cover..

TGed · February 11, 2010, 06:01:34 PM

Broken ring land?

89BlackTGP · February 11, 2010, 06:13:03 PM

Whats a ring land? :laugh: Seriously.. And can it be broken on a brand new engine?

TGed · February 11, 2010, 06:26:29 PM

Do a compression test.

89BlackTGP · February 11, 2010, 06:28:44 PM

Quote from: TGed on February 11, 2010, 06:26:29 PM
Do a compression test.

Ill have to try that this weekend.. Any other thoughts what it caould be?

mfewtrail · February 11, 2010, 08:58:43 PM

It's probably blow-by from poor sealing rings.

killinprixs · February 11, 2010, 09:05:27 PM

maybe you should reroute the pcv so it runs off the intake on the turbo instead of the manifold.

89BlackTGP · February 12, 2010, 01:19:06 AM

Quote from: mfewtrail on February 11, 2010, 08:58:43 PM
It's probably blow-by from poor sealing rings.

With a fresh motor? Can it get better or worse?

90grandprixstet · February 12, 2010, 07:41:10 AM

1500 miles is very little to break in an engine, but if the clearances were not machined properly when it was rebuilt, or they did a cheap rebuild with just throwing in new rings instead of actualy re doing the surface on the cylinder, it could do that its whole life...

another common problem is when people install rings without a ring installer, crack them, and then they break in the first few thousand miles you run the engine, causing excesive blow by and hence, oil coming out of orifices of the crankcase... probably especialy under boost...

no doubts about it that is has something to do with the cylinder's not sealing up properly, and then you get into boost and all that pressure is blowing by the rings, causing excesive crank case pressure and oil coming out the breather...

not realy much you can do about it other than rebuild the engine or hope it breaks in enough to where it goes away, but this should happen within the first 1000 miles for sure....

heres what you can try to help break it in, my engines, airflow, and dyno instructor, a brilliant man by the name of Bill Wagner, told us his stratagy for cylinder ring break in...

go out, accelerate the car on a road, keeping it in the same gear, up to about 3-4 thousand rpm, let it engine brake down to about 2k rpm, keep doing that for 30-60min....

varry the acceleration rate up to the 3-4k rpm too, go realy realy easy, go full out, go medium, etc.... towards the end of the time u can bring it up to about 4500 if you want...

good luck man, hope it breaks in for ya... otherwise your gona need to tear that baby down and put in new rings and hone out the cylinders...

TGed · February 12, 2010, 12:23:05 PM

It will either break in or be breaking, just a matter of how fast!

GPChief · February 12, 2010, 08:24:15 PM

You could try attaching your breather directly to the filter on the turbo. Several have done this. I did it but used clear hose so I could see how much oil was being blown by.

90grandprixstet · February 13, 2010, 10:43:48 AM

the problem with just attaching the line to the intake would be the fact that its just hiding the problem, and if the car has cats, and its sucking in alot of oil, it will clog them up pretty fast...