PCV question
Melting Slicks
Joined: Mar 2004
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From: Farmers Branch TX
Cruise-In VI Veteran
St. Jude Donor '09
I think it would, but may foul that spark plug on the cylinder due to all of the engine's blowby being dumped into one cylinder instead of being distributed evenly.
Melting Slicks
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From: Cut n Shoot TX
Race Director
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From: Foxfield CO 1970 Convertible
Melting Slicks
Joined: Mar 2004
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From: Farmers Branch TX
Cruise-In VI Veteran
St. Jude Donor '09
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Melting Slicks
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From: Beringen
Melting Slicks
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From: Cut n Shoot TX
C6 the C5 of tomorrow
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From: Twin Cities Minnesota
Racer
Joined: Apr 2006
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From: Millbrae California
i would avoid using one cylinders runner as the vacuum source for the pcv valve not only because of the blowby but even more importantly you are giving that air leak/air flow from the pcv to only one cylinder. this would cause that cylinder to run leaner than the rest. I always try to hook the pvc to a central location (base of the carb) so all the cylinders are seeing the same air leak.
i hope this helps henry @ olescarb
i hope this helps henry @ olescarb
Advanced
Joined: Sep 2006
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I'm Positive the Crankcase won't Ventilate itself.
Positive Crankcase Ventilation valve...Yes, but...
Why wouldn't you connect it to the common part of the air intake somewhere? Its only function is to forcibly evacuate fumes (water vapor, solvents, etc.) from the air spaces in the crankcase.
The best thing for these fumes is to burn them in the combustion chambers. All the combustion chambers. If you have oil "blowby", you have a different problem.
Here's a thought: Try it. Run a thousand miles, then read your spark plugs. Tell us what you find. Thanks in advance.
Burning Brakes
Joined: Feb 2000
Posts: 1,246
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The guy has an individual runner intake. That means he has NO common plenum, each cylinder has his own throttle blade.
You have to either plumb the underside of the manifold for a common take off tube that exits somewhere, if you do it near the distributor it will be almost invisible, like a sneaky pete setup. You'll also need that if you have a vacuum advance distributor. Time to break ouyt the drill, tap, tubing bender and flare tool. Otherwise you'll need to run scavenging valves on the collectors
You have to either plumb the underside of the manifold for a common take off tube that exits somewhere, if you do it near the distributor it will be almost invisible, like a sneaky pete setup. You'll also need that if you have a vacuum advance distributor. Time to break ouyt the drill, tap, tubing bender and flare tool. Otherwise you'll need to run scavenging valves on the collectors
Race Director
Joined: May 2005
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From: Millington Illinois
St. Jude Donor '08-'09
i would avoid using one cylinders runner as the vacuum source for the pcv valve not only because of the blowby but even more importantly you are giving that air leak/air flow from the pcv to only one cylinder. this would cause that cylinder to run leaner than the rest. I always try to hook the pvc to a central location (base of the carb) so all the cylinders are seeing the same air leak.
i hope this helps henry @ olescarb
i hope this helps henry @ olescarb
Thread Starter
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
The guy has an individual runner intake. That means he has NO common plenum, each cylinder has his own throttle blade.
You have to either plumb the underside of the manifold for a common take off tube that exits somewhere, if you do it near the distributor it will be almost invisible, like a sneaky pete setup. You'll also need that if you have a vacuum advance distributor. Time to break ouyt the drill, tap, tubing bender and flare tool. Otherwise you'll need to run scavenging valves on the collectors
You have to either plumb the underside of the manifold for a common take off tube that exits somewhere, if you do it near the distributor it will be almost invisible, like a sneaky pete setup. You'll also need that if you have a vacuum advance distributor. Time to break ouyt the drill, tap, tubing bender and flare tool. Otherwise you'll need to run scavenging valves on the collectors
Burning Brakes
Joined: Feb 2000
Posts: 1,246
Likes: 1
Didn't the manifold ome ready for IAC? You don't have to do all the plumbing on the underside, it just looks neater. You can also do some in the center. Are there no additional ports on the throttle bodies for idle control?