Question: AA Kit Oil Cap Modification
Thread Starter
Pro
Joined: Jun 2011
Posts: 537
Likes: 3
From: Santa Maria California
Question: AA Kit Oil Cap Modification
I have read the installation instructions for the C5 AA kit and noticed that the Oil cap is modified to accept a 90 degree fitting and hose that is connected to the air breather. Is this neccessary for the V3 Si kit that is self contained? Or, is this used only for kits that use oil from the pan for S/C lubrication???
Are there other options to relieve the pressure besides a hole in the Oil cap? The hose and fiting just look funky to me for some reason....
Does it bother anyone else or is this just the way it has to be done?
Are there other options to relieve the pressure besides a hole in the Oil cap? The hose and fiting just look funky to me for some reason....
Does it bother anyone else or is this just the way it has to be done?
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
You can use an oil cap with the open breather attached to it but it will seap oil mist out everywhere on top of the engine and blower....
The A&A design vents the oil vapors to the air filter...(or in my case vents right to the ground under the car)..
The A&A design vents the oil vapors to the air filter...(or in my case vents right to the ground under the car)..
Thread Starter
Pro
Joined: Jun 2011
Posts: 537
Likes: 3
From: Santa Maria California
I took a picture of this Procharger kit which was at a local car show. The owner claimed that AA did the install and tune around 6 years ago. It does not appear the Oil cap is modified. I didn't see an open breather either. I wish I knew how to get ahold of the guy who owns the car. I like the clean look. I just wonder how pressure is relieved with his system.
CF Senior Moments Member
Joined: Jan 2004
Posts: 1,329
Likes: 1
From: Oklahoma City Oklahoma
Crankcase Evacuation
There have been many changes over the years - usually to make things better - in the kits most reputable vendors supply.
There is a whole thread that may be of interest -
http://forums.corvetteforum.com/c5-f...on.html:*****:
There is a whole thread that may be of interest -
http://forums.corvetteforum.com/c5-f...on.html:*****:
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
I took a picture of this Procharger kit which was at a local car show. The owner claimed that AA did the install and tune around 6 years ago. It does not appear the Oil cap is modified. I didn't see an open breather either. I wish I knew how to get ahold of the guy who owns the car. I like the clean look. I just wonder how pressure is relieved with his system.
You HAVE to have something to vent the crank case besides the PCV... Especially if running more the 7-8psi of boost..
I had two different breather style oil fil caps, both left an oil film all over the top of the engine covers and blower/brackets....nasty. The A&A vent tube system is the way to go. I used a chrome plated 90* fitting for the oil cap and concealed the hose as much as possible. It looks ok.
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Pro
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From: Santa Maria California
Melting Slicks
Joined: Jan 2008
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From: Nathalie VA
St. Jude Donor '15-'16-'17-'18
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Pro
Joined: Jun 2011
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From: Santa Maria California
What kind of boost are you running with your current set up. Have you experienced and problems taped into the filler neck??
Melting Slicks
Joined: Jan 2008
Posts: 2,590
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From: Nathalie VA
St. Jude Donor '15-'16-'17-'18
10-11 and I'm sure this way is fine for now, but I plan on going with a bigger SC soon. No, but I wrapped the threads with teflon because there was some residual oil at first, but not now.
Last edited by CamminC5; Jan 15, 2012 at 06:01 PM.
Burning Brakes
Joined: Sep 2004
Posts: 1,089
Likes: 4
From: Ocala FL
There is a reason Andy did it this way. He tapped the oil cap because it it is the highest point in the crankcase volume and results in the least oil getting pulled back into the intake manifold/catch can - however you routed it.
Andy used to pull off the valve cover - this resulted in alot of oil in the intake/catch can.
Platinum Supporting Vendor
Joined: Jul 2011
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Yea,
There is a reason Andy did it this way. He tapped the oil cap because it it is the highest point in the crankcase volume and results in the least oil getting pulled back into the intake manifold/catch can - however you routed it.
Andy used to pull off the valve cover - this resulted in alot of oil in the intake/catch can.
There is a reason Andy did it this way. He tapped the oil cap because it it is the highest point in the crankcase volume and results in the least oil getting pulled back into the intake manifold/catch can - however you routed it.
Andy used to pull off the valve cover - this resulted in alot of oil in the intake/catch can.
This is correct.
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Sales Manager at A&A Corvette
PLEASE TAKE A MOMENT TO VISIT OUR NEW WEBSITE AT WWW.AACORVETTE.COM
NOW PARTNERING WITH AFFIRM TO OFFER INTEREST FREE FINANCING!
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Melting Slicks
Joined: Jan 2008
Posts: 2,590
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From: Nathalie VA
St. Jude Donor '15-'16-'17-'18
Still installing it at the highest point of the system. Just makes it easier to remove install the filler cap. Not to mention it looks better.....BTW I don't have any sign of oil residue in the intake or SC.
Thread Starter
Pro
Joined: Jun 2011
Posts: 537
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From: Santa Maria California
Yea,
There is a reason Andy did it this way. He tapped the oil cap because it it is the highest point in the crankcase volume and results in the least oil getting pulled back into the intake manifold/catch can - however you routed it.
Andy used to pull off the valve cover - this resulted in alot of oil in the intake/catch can.
There is a reason Andy did it this way. He tapped the oil cap because it it is the highest point in the crankcase volume and results in the least oil getting pulled back into the intake manifold/catch can - however you routed it.
Andy used to pull off the valve cover - this resulted in alot of oil in the intake/catch can.
However, common sense tells me the side of the the filler neck would work equally as well
Burning Brakes
Joined: Sep 2004
Posts: 1,089
Likes: 4
From: Ocala FL
Just be careful when filling the crankcase with oil; might get some oil in the catch can line if you have a hole in the filler neck; I did.
Lot of good info.
And thanks to Cammin 5 for the filler neck idea. Definitely would look a little cleaner.