FAQ / TECHNICAL

Q: Does the Quikvent oil cap work with the OEM PCV system or should I delete it?

A:

✅ Keep the PCV System If:
You’re still running a street-driven or part-throttle car.
You want cleaner idle and low-load operation.
You’re concerned about emissions equipment or engine longevity over time.
The OEM PCV system:
Actively scavenges crankcase vapors at part-throttle using manifold vacuum.
Helps maintain slight vacuum in the crankcase = less oil leakage, better ring seal.

❌ Remove or Block the PCV System If:
It’s a full-time race car that operates almost entirely at wide open throttle (WOT).
You’re using a dedicated breather system that includes large lines, catch cans, and vent-to-atmosphere (VTA) filters.
You’ve experienced boosted intake contamination, backflow, or PCV valve failure.
Under WOT:
The manifold has little/no vacuum → PCV system does very little.
A VTA system is typically more reliable for high-RPM, high-pressure blow-by.

⚠️ Important Considerations If Removing PCV:
Fully Block the Intake Port
If you’re removing the PCV hose to the intake manifold, plug that port completely.
Replace PCV Valve or Plug It
Either install a block-off plate or replace the PCV valve with a sealed plug to prevent unmetered air.
Use a Good Breather System
Run -10AN or larger lines, proper baffling, and high-flow catch cans to manage blow-by and prevent oil mist spray.
Be Aware of Idle and Vacuum Changes
Without the PCV system, crankcase vacuum might become positive at idle, leading to more oil leaks or potential pressure buildup without good venting.

🔧 Common Race Setup:
Valve cover → 2x -10AN lines → catch can → VTA filter
PCV port on intake manifold = plugged
OEM PCV valve = removed and blocked
Optional: Add a vacuum pump for improved ring seal and power (common in high-end builds)

🏁 Bottom Line:
If it’s a track-only car, with proper baffling and high-flow VTA setup — you can safely delete the PCV system.
If it’s dual-purpose or part-time street-driven, keeping the PCV for low-load operation might be beneficial.

Q: What are the best options for bypassing the PCV valve for off-road use vehicles? 

A: The best way to bypass the PCV system for off-road use vehicles is to remove it and install an appropriate block off kit which will eliminate the factory hoses and plug the ports. The valve cover breather port can be capped off or a small filter can be used. Optionally, for NA applications the breather hose can be left in place

Q: Do you sell QuikVent oil caps for other engines? 

A: Current QuikVent applications cover select Honda, Nissan, and Mazda engines. Mitsubishi and BMW systems are also in development.

New applications are released only after the fitment and function have been properly tested, so availability and development timelines will vary. If there is a platform you would like to see supported, send us a message. Customer interest helps guide what gets developed next.

Q: Can I use fittings other than what’s included with the caps? 

A: QuikVent systems are designed and tested around their included -10AN fittings. Fitting and thread specifications vary between versions, so don’t assume that a replacement fitting is interchangeable.

If you need a barb fitting or another connection style, contact us with your QuikVent version before ordering parts. We’ll confirm what is compatible.

Q: What is the difference between the V1 Series and V2 Series QuikVent? Which should I buy?

A: V1 OR V2? IT’S MOSTLY ABOUT FITMENT.

The V1 and V2 Series are parallel QuikVent product families—not a good/better/best progression.

The V1 Series fits most compatible Honda applications, including B-, D-, H-, and F-series engines, but it does not fit K-series valve covers.

The V2 Series was designed specifically for Honda K-series engines. It also fits many B-, D-, H-, and F-series applications, including the F20B, but it is not a good fit for the F20C.

Both current designs provide dual -10AN outlets, inlet splash shielding, tunable coalescing-mesh inserts, and straightforward bolt-on installation with an included tool.

V1.2 uses a somewhat more restrictive inlet to better manage the higher oil-splash environment commonly found in B-, D-, H-, and F-series applications. This intentional tradeoff is reflected in the airflow comparison below.

The simplest way to choose:
K-series: Choose V2.2
F20C: Choose V1.2
B-, D-, H-, and F20B applications: Either series may be compatible; check the product fitment information for your specific valve cover.

Still unsure? Contact us with your engine and valve-cover information and we’ll point you in the right direction.

QuikVent Oil Cap Feature Comparison

Q: Will you sponsor my vehicle? 

A: We do sponsor vehicles from time to time and would love to hear from you. Whether you have a large following on social media or just have a build that gets a lot of attention or track time, send us a proposal on how we can work together. Keep in mind we get a ton of sponsorship requests so make it count! Send your proposal to info@level7performance.com and title it SPONSORSHIP PROPOSAL