PCV/CCV to Vented Catch Can
Status:
Successful
Progress: Complete
100%
PCV and CCV System in the Ford Raptor SVT 6.2L Engine
Positive Crankcase Ventilation (PCV) System in the Ford Raptor 6.2L
The PCV system in the 6.2L engine is designed to handle the substantial blow-by gases generated by its large displacement and high cylinder pressures. It ensures efficient operation and compliance with emissions standards.
- How it Works:
1. During combustion, a small amount of gases (blow-by) escapes past the piston rings into the crankcase.
2. The PCV valve, located on the valve cover, regulates the flow of these gases based on engine vacuum and load conditions.
3. The gases are routed through a hose back to the intake manifold, where they mix with incoming air and fuel.
4. These gases are then re-burned in the combustion chambers, reducing emissions.
- Benefits:
- Prevents the buildup of pressure in the crankcase, reducing the risk of oil leaks and seal damage.
- Reduces harmful emissions by recycling unburned hydrocarbons.
Unique Considerations for the 6.2L Engine
- High-Performance Application: The Raptor's 6.2L engine generates more blow-by due to its size and power output. Its PCV system is robust enough to handle the increased pressure and volume of gases.
- Oil Separator Add-ons: Many Raptor owners install aftermarket oil catch cans or separators to complement the PCV system. These devices capture oil vapors from blow-by gases before they reach the intake manifold, preventing carbon buildup and maintaining performance.
By maintaining the PCV system in good condition, you ensure the 6.2L Raptor engine delivers reliable performance and complies with emissions regulations.
Intake System
With that information in consideration, I don't like the idea of
ANY oil vapor and other gases being reintroduced in my engine intake. Throwing on "sealed" catch cans are not going to mitigate this alone. They will solve the issue with blowby for sure, but that's only 80% of the problem. The other 20% is on the gases, steam, and vapor alone.
My idea to mitigate this 100% is by throwing in a breather catch can system. Catch can will capture the blowby material while the breather is pulling the necessary vacuum to pull all the garbage out of the crankcase without recirculating back to the intake.
If you pull the intake end out of the CCV / PCV system, you can see all the vapours come out. Aim it towards a surface and can quickly see that surface get covered in an oil coating.
That's no bueno in an
AIR intake system.
To pull this off, I am going to have to pull the CCV and PCV hoses off on both ends, pull the PCV Valve and gut. Mount the breather can in a desirable location, install and route fuel rated hoses from both valve covers to the catch can, cap the unused intake connections, and check vehicle operation.
If my theory is correct, you should not have any issues.
Just have to make sure to empty it weekly at the minimum.
EVIL ENERGY 10AN Baffled Oil Catch Can,Oil Breather Tank with Valve,750ML Universal Aluminum Black
Ordered this Vented Catch Can:
EVIL ENERGY 10AN Baffled Oil Catch Can,Oil Breather Tank with Valve,750ML Universal Aluminum Black
https://a.co/d/39KbjEU
I'm going to figure out how to reuse the PCV Connectors and mate them to 5/8 Diameter Fuse Hoses. Purchasing those at a local auto store.
Update 2 Jan 2025:
That catch can kit does not come with AN fittings at all. So I went and ordered some AN-10 fittings and will be waiting even longer to tackle this project.
Update 03 Jan 2025:
Amazon is coming in clutch. They updated the tracking and said they both the fittings and the can are coming in at the same day! Maybe I can get this done Saturday / Sunday. Stay tuned!
Update 03 Jan 2025 x2:
Went ahead and pulled the PCV hose off. Drenched in oil. Cleaned it and set it to the side. Waiting for the parts.
Update 04 Jan 2024:
I ran around to various stores to get vacuum caps and 5/8 fuel line hoses. O'Reilly's was able to deliver!
Grabbed 6 ft of the 5/8th fuel hose, was just enough! 5/8 Vacuum cap, and bigger than 5/8 Hose Clamps.
I mounted the catch can between the battery and coolant reservoir.
Then I pulled the PCV out and gutted the inside spring and plunger by prying on the retainer.
Afterwards, I fed the 5/8 Fuel Hose down and bottomed as far as I could before clamping it. Ran it to the catch can, cut it accordingly, and clamped it on.
Then I went to the CCV side and did the same.
Capped off the vacuum ports in the intake and throttle body. Buttoned everything up, and took it in a drive after idling for 10 minutes.
Concussion:
No errors and no issues.
Took it up to 55 MPH, max 5k RPMs without a hiccup. If anything, it actually drives better. The throttle response doesn't hesitate. Further confirming that my theory is correct and that I have excessive blow by with the stock set up. Running a sealed can would not yield the same results vs. a breather set up since I'm venting 100% instead of pressurizing the system during WOT and purging when I let off the gas. Healthier for the motor.
Update 04 Jan 2025 x2:
Forgot to include: M6 Bolts, M6 Nuts, and M6 Washers.
