Big 16G Oil leak (Smoking)

[madmader]

Well i bought a used 16g, bolted it up and now my car smokes.
I droped the down pipe, looks good there. I went ahead and crossed my fingers then removed the J pipe. Some polls of oil...

Cleaned the oil off, fired her up... And damn oil comes out of there.

I hear that when you blow the seal the car smokes so bad you cna't see anythone behind you. My car does not smoke that bad. I mean most the time you can't even see blue coming out, just on accelration, or morning start ups. And when i start it in the morning holy crap..

Whats a rebuild cost?

 

[oldman]

1. What happen to the last turbo?

2. Shaftplay on the replacement turbo?

3. Are you creeping with the new half assed 3" exhaust?

 

[blcknspo0ln]

Is your oil return line kinked?

 

[madmader]

The old turbo was a t25, it was leaking oil out of a flang. So oil was buring on the turbo when I would boost.

Shaft play on this 16G was verry min. It felt good.

No old man, don't think my DP is big enough to give me turbo creep

As for oil supply line, it is being ran off the front side of the oil filter housing. The oil return line is push on house (you know that blue flame proof fuel line type stuff). I think it is 3/8.

 

[blcknspo0ln]

Is there a kink in the return line? Have you checked your valve stem seals lately? How many miles do you have on your motor?

 

[madmader]

I just swaped the turbo 2 weeks ago, I did'nt see any dark oily resudue on the exhuast valves. I don't think there leaking, or not much of a consern if they are. No, I do not see any kinks in the return line.

About 140k.

What that have to do with oil shooting out of the charged air side?

 

[GSXanimal]

sounds like oil is blowing through the turbo seals,also blue smoke at startup in the morning is usually from oil seeping by the valve stem seals.

 

[RipperXX]

^ yep

My #4 cyl has residue on the exhaust side, still never noticed any smoke on startup though so eh go figure.

I had the same problem he is experenceing with my old 14b, wasn't as bad as his though, just a little blueish puff when i'd downshift.

Oh and I have blown a turbo, and YES you WILL know it when you do . Personaly I would recomend trying the stock feed location as it's likely less pressure, and see if that has any effect on it.

 

[blcknspo0ln]

A kinked oil return line will lead to excess oil pressure buildup and will eventually blow the seals out on your turbo. Not many people realize how detrimental that can be. Also, ripperXX is close to correct, but depending on the model year. Some years pulled oil from the head and some years pulled oil from the oil filter housing. With a 16G/td05h, pulling oil from the head is perfectly fine. Only with the recent onslought of 50 trim turbos is where you have to be concerned with where you pull your oil from (bb from head, standard 360 from OFH).

To ellaborate on the valve stem seals, if you take your manifold off you can peek into your valve chambers with a flash light and see if there is any oil on the valves and valve stems themselves. If there is excess oil on there, your valve stem seals are most likely needed to be replaced.

 

[madmader]

I did'nt see any dark oily resudue on the exhuast valves. I don't think there leaking, or not much of a consern if they are.
What that have to do with oil shooting out of the charged air side?

Im not sure If you guys cought it but, the car was not smoking before I swapped turbos.



Yes the oil feed line is running off the Oil Filter housing, it is tapped in the front side of it. I am sure this is not stock. I got the car with a T25 on it, all 2g parts. Mani, Turbo, IC lines, TB elbo, blow off valve.

I replaced the oil feed line with a Rubber Push lock hose and fittings. I made my own 1/4 alluminum plates and tapped it to fit the fittings and bolt to the turbo and oil pan. I made sure to shine a flashlight up through the wholes after install. It all match OEM deepth and what not. No kinks.

Would my couse be from the OFH feed line. Should I try running off the head, or is the seal already gone.


As for my Vent tube from the head to the Intake, There is no oil gettting by there. I have taken it off and ran it discconected from the intake. I still notice the same ammount of oil in the turbo.

 

[madmader]

Just wanted to finish this off.

I fixed it some time back.

It was the Oil Return line. It was to restricting. I replaced it back to the OEM part.

The turbo has worked fine ever since. No problems, no seals blewout.