David Walgenbach

Hey everyone. I'm new to this forum, the names Dave. I bought a 91 BRG last august and have since boosted it. MSPNP2 for engine management. However i've been dealing with some issues since then. I had an old T25 on it, that had a hood exit and all of that because of the shitty placement of the greddy manifold. Didn't notice anything wrong, oil burning or anything. As soon as i made a downpipe for it (Pain in the ***) i noticed blue smoke at idle. Frustrating right? I'm running a -4AN feed line and the correct restrictor too. Went through all of that, assumed the turbo seals were shot and instead decided to go with a T3 setup recently. I bought the classic Ebay t3 cast iron manifold and the fleabay T3 turbo. As soon as i got it on however noticed oil burning. Like heavy oil burning. Like to the point that there was oil being shot out of the exhaust housing of the turbo when the motor was cold lol. Back at square one. I figured it was valve seals, even though my motor only has 100k on it. Went ahead and replaced those with supertech valve seals and boom. Does the same thing. Drain line is a 5/8" rubber hose into a 5/8" fitting into my oil pan. It is above the oil level so that shouldn't be an issue. Along with that the oil isn't overfilled. I keep it halfway between F and L. It burns quite a bit of oil which is just frustrating me to the ends of my wit lol. Any ideas as to what it could be? As of now, my symptoms are burning oil when cold, it puffs out blue smoke if revved at a cold idle, or if driven around until the motor is warm. Once it warms up it doesn't burn oil, unless i'm rev matching. If i downshift without rev matching (Revving) it blows no smoke. If i rev it blows a slight amount of smoke. Along with this, i hit boost absolutely fine. It gets up to the 10 psi it's set at, but as soon as i let off, or shift, (Only while in boost) it puffs out a huge cloud of white smoke, that smells heavily of oil, and then the smoke clears and it drives fine. it blows no smoke at all when cruising around driving normally, unless i rev the car. If i free rev it, it puffs out smoke. If i get out of the car immediately after shutting it off, i can see smoke coming from my vband clamp for my downpipe on the fleabay turbo. I have done a compression test and the results came out decent i assume (150 PSI +- 4/5 PSI) on a relatively warm motor. Along with that, plugs were dried black meaning rich i assume (the car runs pretty rich on the current base tune). It pulls normal vacuum at idle (19/20 inHG) and overall runs fine. Also, i'm running a shitty advance auto PCV that has like less than 1k miles on it. I have a genuine 323 GTX PCV in the mail as of now. My crankcase vent has a draft tube on it so it's not vented into my intake. Also, there is no oil in my intercooler pipes at all. It doesn't feel down on power either. I have no clue where to go from here... i'm leaning towards the turbo being bad, but that wouldn't explain why i blow smoke at idle. if anyone has any ideas they'd be appreciated lol.

EDIT: More background info lol, this car was supercharged by the previous owner. A JRSC kit. Along with that, it apparently sat for a while. The previous owners drove it about 4/5K miles in 6 years.

Anyways here's some pictures of my POS. has 103K miles as of now:

ryansmoneypit

iTrader: (6)

Need lots and lots of good pictures of the engine bay. All things involved.

sixshooter

iTrader: (12)

I'm going to guess PCV problem

David Walgenbach

Well i atleast fixed part of the problem. I took off my shitty autozone PCV and blew through it and could blow through both sides with just my lungs lol. So i took it off, and capped my intake manifold nipple and ran it open to see if the problem subsided. I can hit boost all day now and blow no smoke lol... but the smoke at idle and when cold persists. When the car is cold it will idle with no smoke, but as soon as i start driving its just a constant blue cloud till i warm up. I can cruise around all day (when the car is warm) burning no oil, but as soon as i come to a stop the smoke just starts pouring out of my exhaust. I tried switching to a thicker weight oil from Mobil 1 5w30 to some castrol 10w40 and the smoke still persists, if not worse. Along with this, as soon as i come home and turn off the car i look under the hood and smoke is coming from the vband connection on my downpipe lol, the smoke smells like oil too. Any ideas as to this problem? And don't worry my PCV system will be replaced as soon as my GTX pcv shows up in the mail tomorrow.

Pics of engine bay:

sixshooter

iTrader: (12)

Idle and decel are high vacuum situations and can pull oil from valve stem seals and pcv.
In boost the crankcase receives more blowby and can try to push oil and vapor out of the engine and chra everywhere there is a seal or fitting.
If your pcv is borked the boost from your intake can leak into the valve cover causing power loss and forcing more air into the crankcase.

David Walgenbach

Ah yep that's what i thought. Last night i got the turbo taken off and brought the car back to NA temporarily. Turns out the smoke at idle was from the turbo. Seals must be toast. Still has classic signs of valve stem seal smoke at high vac, so i'm gonna pull the valve cover and cams and take a look at them again. I didn't oil the viton seals when i reinstalled them so i feel like they're slipping oil past at high vac. In other good news, i have another T3 on the way. Smaller this time for better spool lol.