A catch can will help prevent oil from getting to the intake.
Oil in intake track help?
Thread Starter
Burning Brakes
Joined: Nov 2006
Posts: 793
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Oil in intake track help?
So I just pulled off the factory intake manifold and noticed a fair amount of oil coated on the inside floor and walls. I know this is to be expected as my car is totally stock and I am not running any sort of catch can setup. My question is that there is also oil residue in the intake runners of the heads. Is this something I should be worried about? I have the car all torn apart now,getting ready for my blower so I was wondering if I needed to do something about the heads as now would be the time to do it (meaning pull them off and clean them up)?
Heel & Toe
Joined: Nov 2009
Posts: 17
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From: Poulsbo, WA Member since 2001
They all have oil in them and yours is normal. You can wash it in a deep sink with lots of Dawn dish soap or any degreaser like simple green to clean it up. A catch can will stop about 80% of the oil accumulation. Don't fret too much about the rest.
Safety Car
Joined: Jun 1999
Posts: 3,570
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From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Just wipe the heads ports with lacquer thinner if you are concerned about it. That's what I did when I installed the FAST 92 a few months ago.
There may be some carbon on the pistons and combustion chambers but unless you are experiencing any detonation, I would not be concerned. Today's gas additives should keep it under control.
There may be some carbon on the pistons and combustion chambers but unless you are experiencing any detonation, I would not be concerned. Today's gas additives should keep it under control.
Last edited by Mez; Mar 1, 2010 at 04:39 PM.
Melting Slicks
Joined: Mar 2008
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From: Avon Park FLORIDA
St. Jude Donor '08-'09-'10
You need to do a search!!
Oil in the intake creates detonation and poor performance, I would clean and make sure you install a good can or breather system
Spinmonster has done some threads that cover this topic
Oil in the intake creates detonation and poor performance, I would clean and make sure you install a good can or breather system
Spinmonster has done some threads that cover this topic
Safety Car
Joined: Jun 1999
Posts: 3,570
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From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Go back and read the thread.
The OP said he WILL clean the intake manifold and WILL install a catch can but wanted to know if he should be concern what oil in the heads and if he should take them off and clean them up.
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Melting Slicks
Joined: Mar 2008
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From: Avon Park FLORIDA
St. Jude Donor '08-'09-'10
The OP deserves to know what is causing the oil anf how to fix it!!
It will save his motor.
and yes I read the thread.
Instructor
Joined: May 2007
Posts: 234
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From: Wexford, PA
Everyone has this....even the ones with a catch can. It does not catch everything. I have seen all kinds of varations on here -- from no catch can, to one can, to two cans in series, to venting to atmosphere. Take a search, read the data, and make a decision....thats what I had to do.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
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From: St. Louis, MO
St. Jude Donor '08
You will need a catch can, and likely two with a blower setup unless you go with the oil cap breather for your pcv clean air intake.
Here is great info on the topic by Tracy of Revxtreme, an expert on the subject. He sells a great can too with a pcv valve in it (I think he's the only one with a valve which makes perfect sense to me...cars normally have a valve to keep high vacuum from sucking too much oil and oil mist in during high vacuum situations - our vettes don't have that nor do normal catch cans which must IMHO be a big part of the oil injestion we see.
http://forums.corvetteforum.com/c6-t...cv-system.html
Here is great info on the topic by Tracy of Revxtreme, an expert on the subject. He sells a great can too with a pcv valve in it (I think he's the only one with a valve which makes perfect sense to me...cars normally have a valve to keep high vacuum from sucking too much oil and oil mist in during high vacuum situations - our vettes don't have that nor do normal catch cans which must IMHO be a big part of the oil injestion we see.
http://forums.corvetteforum.com/c6-t...cv-system.html
Safety Car
Joined: Jun 1999
Posts: 3,570
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From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Should he pull the heads and clean out the oil residue or not??
Le Mans Master
Joined: Feb 2006
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From: Chandler Arizona
Melting Slicks
Joined: Mar 2008
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From: Avon Park FLORIDA
St. Jude Donor '08-'09-'10
Tech Contributor
Joined: Jul 2002
Posts: 14,950
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From: St. Louis, MO
St. Jude Donor '08
Drifting
Joined: Jul 2009
Posts: 1,319
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From: Lakeville, MA
St. Jude Donor '10
Also looking to get a catch can. What one are you planning to use?
Can anyone shed some light on which ones they'd recommend / work as advertised.....through some research on older posts it seems some people say they work and others don't.
I also see three names that seem to be widely used: Revextreme, Mike Norris, and Elite Engineering.
Can anyone shed some light on which ones they'd recommend / work as advertised.....through some research on older posts it seems some people say they work and others don't.
I also see three names that seem to be widely used: Revextreme, Mike Norris, and Elite Engineering.
Last edited by turboffr; Mar 2, 2010 at 08:38 PM.
Melting Slicks
Joined: Sep 2007
Posts: 2,597
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From: READING PA
St. Jude Donor '08-'09-'10
in the other thread. One line from the valley goes to the 1st Can and the other 2 from the Valve Covers go to the other Can.
I had the two lines going to VENT and in spite of it I still wound up with Oil in my FAST INTAKE ?.