civic98mi

So I'm having a bit of a problem with burning oil and oil blowby only under load in boost, and with my minimal knowledge of things, I have hit a wall, and I've searched all over hell for any possible solutions. I can drive the car to work staying out of boost, and I don't notice any puffs behind me, but as soon as the car sees about 1psi, it blows blue smoke (see below for image). I'm not the most knowledgeable on the subject, but I'm really leaning towards the turbo NOT being at fault.

Specs:
Bone stock b16a2 with roughly 140-150k
Garrett t3/t4 50-trim, .63a/r (journal bearing, one year old so far)
No oil restrictor, as per recommended by Garrett themselves, and my tuner)
Revhard manifold knockoff
3" downpipe and 3" magnaflow turbo-back exhaust
Tial Wastegate with 7psi spring
Open Dump
Mac Boost Solenoid
RC 440 Injectors saturated / Walbro 255
Greddy Type S bov
2.5" charge piping / small intercooler
Breather filter on valve cover nipple
Factory black box on back of block / factory pcv setup (my tuner leaves this intact on all tuned cars under ~400hp, said they're always fine)
Tuned on Neptune by reputable tuner, making 260whp / 180ish tq on 7psi, 293hp / 202 tq on 9psi
Using 20w50 oil, as recommended by tuner (hot summer days, reaching near 100 degrees)
91 pump gas (4200 ft elevation)

The car doesn't smoke at idle, unless it has just been driven hard. Even then, it's a very small amount. I just removed all of the charge piping, and the compressor wheel and charge pipes are clean as a whistle. No shaft play except for the minimal side to side that was there brand new out of the box. Car doesn't smoke on deceleration. There are no visible leaks anywhere, and from what I can tell, the turbine and downpipe are clean (no wet or oil spots).

I should also add that the car drives great, no loss of power, boosts perfect all the way to 9psi, etc. also did compression tests on 2 occasions, yielding results of 195, 187, 187, 184. Haven't done a leak down procedure yet, as I don't have an air compressor. Plugs are also reading normal, no oil soaking or fouling. Oil drain is a clean gradual slope to the highest point in the oil pan. I even removed it and shined a flashlight through it, no obstructions. Feed line is also un-obstructed. Car sees about 50psi oil pressure on cold startup, <10 on warm idle, and about 65psi at WOT. Also replaced the Pcv valve, cleaned the lines going to the breather chamber, etc. There always seems to be a bit of oil inside the Pcv line, and I know getting a catch can and ditching the Pcv may help, but my tuner said he wouldn't worry about it at my power level (260 - 300 whp).

Pics:

Car Smoking hitting throttle after apex:


Are the valves leaking? Cylinder 4 concerns me especially, but it's not exactly "wet". Could this be leaking through and burning oil before it even gets to the manifold? Typically, from what I've read, valves will cause the car to smoke on cold startup, and it gradually goes away. Mine doesn't smoke on startup, or idle, or deceleration. Only on boost, the worst being between 1-4psi, it gets a little better from 5psi onward.

I should also note, that looking down into the spark plug holes with the plugs removed, you can see on all 4 cylinders that the tops of the pistons are black and very sludgy, not clean at all. I wasn't able to get a shot of this, nothing would turn out.

Cyl 1


Cyl 2


Cyl 3


Cyl 4 (looks the worst)



Inside turbo manifold:






Inside turbo (manifold area)


Inside open Dump Tube (a little chunky)

muggsy

I'm have the same issue with my car. I've been told that I need a catch can, don't know if that's gonna help or not. I'm planning on going for a re-tune, hopefully it will help.

lsturbo33

Burning oil at WOT is usually a means worn rings or broken ringlands. That is what I would bet it is.

TKERacer619

Ditch the PVC valve and get rid of that positive pressure in the crankcase.

All that build up on the top side of the valves makes me cringe. You say the pistons are that way too? Its probably beyond intake cleaners at this point