turbo cleaning
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New User
Joined: Feb 2009
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From: jackson,wy
turbo cleaning
i have a 2002 f250 7.3 lt, it has a 4 inch magna flow exaust, a aem intake, and about 96,000 miles on it. i'm looking for answers on what i need to clean on and in my turbo to keep it in optmal shape.also i saw a post about a reroute for a valve of sorts not sure but thought it had something to do with the turbo workings.thanks for any help
Postmaster
Joined: Sep 2006
Posts: 3,048
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its a CCV , Crank Case Ventilation. its on Driver side valve cover, just under your air intake tube, where its connected, you can search for CCV reroute, and plenty of sponsors have kits to do so, or you can do it yourself, leave turbo alone it will be fine. sooner you do a ccv reroute the better, and your turbo will tank you for it, it wont have to breathe the oil vapors from your motor..
Post Fiend
Joined: Jun 2004
Posts: 9,293
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From: Parker, CO
There is no maintenance on the turbo. Just keep up with regular oil changes and you should be good to go.
As for the reroute of the valve, that is the CCV. There is a doghouse looking vent on the driver's side valve cover, and a hose that runs directly into the intake right before the turbo. By rerouting the hose (ie vent to open atmosphere) and capping off the hole from the vent inlet on the intake, you keep the oil from misting into the turbo and intake. The only problem with this oil is that it seeps through the intercooler boots, causing the engine to stay dirty all the time. Also, oily boots tend to blow off easier. With the CCV reroute, your engine bay stays cleaner, and boots stay on better.
The CCV does not affect turbo performance at all.
As for the reroute of the valve, that is the CCV. There is a doghouse looking vent on the driver's side valve cover, and a hose that runs directly into the intake right before the turbo. By rerouting the hose (ie vent to open atmosphere) and capping off the hole from the vent inlet on the intake, you keep the oil from misting into the turbo and intake. The only problem with this oil is that it seeps through the intercooler boots, causing the engine to stay dirty all the time. Also, oily boots tend to blow off easier. With the CCV reroute, your engine bay stays cleaner, and boots stay on better.
The CCV does not affect turbo performance at all.
Lead Driver
Joined: Jan 2007
Posts: 6,708
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From: Kiowa CO
I had a small puddle inside the intake under the turbo wheel before I did the CCV mod. Hopefully now, it won't have that oily mess anymore.
Here's a writeup on the CCV mod.
CCV Mod pictures from trucks photos on webshots
Here's a writeup on the CCV mod.
CCV Mod pictures from trucks photos on webshots
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
The turbo is oiled by engine oil. If that's what you meant by "oil in your base" then the short answer is yes 
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Correct. Pull the turbo out and you'll see the oil passages in the turbo as well as running right through the middle of the pedestal.
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Lead Driver
Joined: Jan 2007
Posts: 6,708
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From: Kiowa CO
...but the oil in the intake and the turbo wheel is from the OEM CCV system routing the crankcase blow-by into the intake tube. Hence the reason for the mod.
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Tuned
Joined: May 2008
Posts: 282
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From: Pearl River, LA
Ok, on a different vehicle I used to own enthusiasts didn't reroute the CCV tube for lubrication reasons. I understand that the CCV tube is there to provide a vacuum that sucks oil into the head of the motor. If the CCV is capped off, the intake wouldn't provide suction and oil wouldn't make it to the head to lube the cams, etc. Wouldn't this be bad? Or does oil make it to the head via another method?
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Ok, on a different vehicle I used to own enthusiasts didn't reroute the CCV tube for lubrication reasons. I understand that the CCV tube is there to provide a vacuum that sucks oil into the head of the motor. If the CCV is capped off, the intake wouldn't provide suction and oil wouldn't make it to the head to lube the cams, etc. Wouldn't this be bad? Or does oil make it to the head via another method?
Our Powerstrokes are nearly identical to the International T444E engines, and International vents the crankcase to open atmosphere, instead of to the intake.
Most people that mod the CCV are just doing the same thing that International does from the factory.