3rd turbo...

[Lex2007]

Hey Gents,

My 2007 has 170k miles.

No engine mods. Original CLUTCH!

I am on my 2nd stock turbo which is now leaking oil badly. Trans is soaked and its dripping onto the heat shield of the exhaust manifold.

Is it safe to install a Cork Sport 3/6 CST4 Turbo or equivalent and upgraded HPFP internals without also installing new injectors, without a new fuel pump, and without new ignition coils?

My fuel pump, coils and injectors are original. Only the spark plugs have been changed.

Not sure I wanna spend $4k on this old baby but the turbo definitely needs to come out again.

I still love driving her!!! All these years later.

 

[Crazycanadian]

Before condemning the turbo make sure you don't have any leaks above it. Also pull the intake off and look for oil inside possibly coming from the Valve cover vent. After that do a leak down test on the motor. Not just a compression check. My speed 6 had a leak like that, the motor had blow by issues pushing oil out the valve cover vent.. My stock turbo went back on the car after I rebuilt the motor and it's given me another 50,000kms of service.

 

[Lex2007]

Valve cover vent? Never even heard of this. The car is stock and I always do 3-5k oil changes with Mobile1 or equivalent. Id be bummed of the motor had blow by at 170k.

Thanks so much for the tip....will look for that vent this weekend.

I added some UV dye as well to help pinpoint.

Last time this happened it was the turbo leaking onto the cat shield and burning up. Its more intense now so maybe its not the turbo.

 

[Easter Bunny]

All motors have blowby

 

[Crazycanadian]

Valve cover vent? Never even heard of this. The car is stock and I always do 3-5k oil changes with Mobile1 or equivalent. Id be bummed of the motor had blow by at 170k.

Thanks so much for the tip....will look for that vent this weekend.

I added some UV dye as well to help pinpoint.

Last time this happened it was the turbo leaking onto the cat shield and burning up. Its more intense now so maybe its not the turbo.

It's the line going from the valve cover to the intake before the turbo. It's part of the PCV system.

even if this isn't your problem it's go to do this kind of health check before going down the rabbit hole of an upgraded turbo.

All motors have blowby

When you've got 2 cylinder that show good compression but have 60 - 70% leak down readings. You'll have an excessive amount of blow by.. This gets vented through the valve cover and in to the intake pre-turbo.. That extra blow by pushes oil out that gets sucked up by the turbo and run though the intercooler.. It'll also collect and drip out of the intake pipe and turbo where the OP turbo is dripping..

It's common for these motors to have sticky/carboned up oil control rings that cause this.. Generally speaking, this carbon is to hardened to be cleaned by any kind of chemical or flush.