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Product Details
The Turbosmart GenV RacePort 50mm Blow-Off Valve – Sleeper Black (TS-0204-1135) is a high-performance, atmospheric blow-off valve engineered to deliver exceptional airflow capacity, rapid pressure relief, and dependable operation in demanding turbocharged applications. Featuring a stealth-inspired black-on-black finish, lightweight billet aluminum construction, and a high-flow 50mm inlet, the GenV RacePort combines Turbosmart's proven motorsport technology with an aggressive yet understated appearance.
Designed for high-horsepower turbocharger systems, the RacePort provides an efficient method of releasing excess charge pressure when the throttle closes. During boost, compressed air travels from the turbocharger through the intercooler piping toward the engine. When the throttle closes suddenly, airflow is restricted, causing pressure to accumulate between the turbocharger compressor and throttle body.
Without adequate pressure relief, this trapped air can contribute to compressor surge, creating unwanted stress on the turbocharger and reducing overall system efficiency.
The GenV RacePort addresses this issue with a large 50mm inlet and an optimized internal valve design capable of flowing more than 330 CFM. This substantial airflow capacity makes it particularly well suited for high-output turbocharged engines and custom forced-induction systems.
One of the defining characteristics of the RacePort is its compact, lightweight construction. Turbosmart developed the valve to be approximately 50% lighter and 25% smaller than comparable competing designs, providing excellent packaging flexibility in crowded engine bays.
The TS-0204-1135 features the exclusive Sleeper Black finish, combining a black body, black locking collar, and matching black reference fittings. This creates a clean, stealthy appearance that pairs especially well with Turbosmart Sleeper Series wastegates and other black performance components.
Manufactured from 6000-series billet aluminum, the RacePort incorporates a MIL-SPEC hard-anodized valve guide and stem, a high-temperature silicone-Nomex diaphragm, and a positive-sealing valve seat.
Its quick-release V-band mounting system allows convenient installation and removal, while Turbosmart's unique locking collar design simplifies spring servicing.
The valve is supplied with a blue spring rated for approximately -18 to -14 inHg of engine vacuum, making it suitable for many conventional turbocharged engine applications.
With five available spring configurations, the GenV RacePort can be tailored to different engine vacuum characteristics and operating requirements.
Whether building a turbocharged Honda K20/K24, upgrading a B-Series forced-induction system, or assembling a high-horsepower motorsport turbocharger setup, the Turbosmart TS-0204-1135 GenV RacePort Sleeper provides outstanding pressure relief capability, lightweight construction, and proven Turbosmart reliability.
Features
Genuine Turbosmart GenV RacePort: Fifth-generation atmospheric blow-off valve engineered for demanding forced-induction applications.
50mm / 2.0-Inch Inlet: Large inlet provides exceptional charge-air pressure relief capacity.
330+ CFM Flow Capacity: Designed to discharge more than 330 cubic feet of air per minute.
Sleeper Black Finish: Features a stealthy black-on-black body, collar, and reference fittings.
6000-Series Billet Aluminum Construction: Provides excellent strength while minimizing weight.
Compact Lightweight Design: Approximately 50% lighter and 25% smaller than comparable competing blow-off valves.
CFD-Optimized Internal Design: Developed to maximize airflow and improve valve response.
Atmospheric Venting Configuration: Releases excess charge pressure directly into the atmosphere.
Quick-Release Aluminum V-Band: Allows convenient installation, removal, and servicing.
Unique Locking Collar Design: Simplifies access to the valve's internal spring assembly.
MIL-SPEC Hard-Anodized Valve Guide: Provides improved durability and wear resistance.
MIL-SPEC Hard-Anodized Valve Stem: Designed for consistent movement and long-term reliability.
High-Temperature Silicone-Nomex Diaphragm: Supports dependable operation under demanding engine conditions.
Positive-Sealing Valve Seat: Helps prevent unwanted boost leakage while the valve is closed.
Dual 1/8-Inch NPT Reference Ports: Provides flexibility for vacuum reference hose routing.
Blue Spring Preinstalled: Rated for approximately -18 to -14 inHg engine vacuum.
Five Available Spring Configurations: Allows tuning for different engine vacuum characteristics.
Profiled Aluminum Weld-On Flange Included: Supports custom intercooler and charge pipe fabrication.
V-Band Mounting Assembly Included: Provides the required valve mounting connection.
Optional Hall Effect Position Sensor: Supports advanced monitoring with a compatible sensor cap.
High-Horsepower Turbo Applications: Suitable for properly engineered high-output forced-induction systems.
Distinctive Blow-Off Valve Sound: Produces an aggressive atmospheric discharge when releasing boost pressure.
Universal Vehicle Application: Compatible with custom turbocharger systems using the appropriate mounting arrangement.
Turbosmart Part Number TS-0204-1135: Ensures accurate identification and ordering.
Popular Performance Applications
The Turbosmart GenV RacePort is a universal atmospheric blow-off valve designed for custom turbocharger systems utilizing a compatible 50mm V-band mounting arrangement.
Popular applications include:
Honda Civic K20 Turbo Builds: Suitable for custom K20A, K20A2, K20Z1, and K20Z3 turbocharger systems.
Honda Civic K24 Turbo Builds: Supports aftermarket turbocharger installations using compatible K24 engines.
Acura RSX Type-S Turbo Builds: Ideal for custom K20 turbo systems requiring high-flow charge pressure relief.
Acura TSX K24 Turbo Applications: Suitable for custom forced-induction configurations.
Honda Accord K-Series Turbo Builds: Supports aftermarket turbocharger and intercooler piping installations.
Honda S2000 Turbo Builds: Suitable for custom F20C and F22C turbocharger systems.
Acura Integra Turbo Builds: Popular for B-Series and K-Series swapped turbo applications.
Honda Prelude Turbo Builds: Supports compatible H-Series and K-Series forced-induction systems.
K20/K24 Frankenstein Turbo Builds: Suitable for high-output turbocharger configurations.
B16, B18, and B20 Turbo Builds: Compatible with custom charge piping and appropriate vacuum reference plumbing.
Subaru WRX and STI Turbo Builds: Suitable for compatible aftermarket turbocharger systems.
Mitsubishi Evolution Turbo Builds: Supports custom high-performance charge-air systems.
Nissan SR20DET and RB-Series Turbo Builds: Suitable for compatible turbocharger installations.
Toyota 1JZ and 2JZ Turbo Builds: Supports high-output turbocharger systems.
Turbocharged V8 Applications: Suitable for custom forced-induction systems requiring substantial pressure relief capacity.
Drag Racing Applications: Provides high-flow atmospheric pressure relief for competition turbocharger systems.
Roll Racing Builds: Suitable for high-horsepower turbocharged vehicles.
Custom Motorsport Applications: Supports demanding forced-induction systems with compatible mounting arrangements.
Important: This is a universal performance component, not a direct-fit vehicle-specific replacement. Compatibility depends on the charge pipe mounting arrangement, available installation clearance, engine vacuum characteristics, and engine management system.
Additional Information
- Manufacturer: Turbosmart
- Part Number: TS-0204-1135
- Product Series: GenV RacePort Sleeper
- Product Type: Atmospheric Blow-Off Valve
- Valve Inlet Diameter: 50mm / 2.0 Inches
- Flow Capacity: Over 330 CFM
- Venting Configuration: Vent to Atmosphere
- Body Material: 6000-Series Billet Aluminum
- Finish: Sleeper Black
- Valve Guide and Stem Finish: MIL-SPEC Hard Anodized
- Diaphragm Material: High-Temperature Silicone-Nomex
- Mounting Configuration: 50mm V-Band
- Pressure Reference Ports: (2) 1/8-Inch NPT
- Preinstalled Spring: Blue
- Installed Spring Vacuum Rating: -18 to -14 inHg
- Available Spring Configurations: Five
- Optional Position Monitoring: Hall Effect Sensor Cap Compatible
- Vehicle Fitment: Universal Custom Turbocharger Applications
- UPC: 9329677022773
High-Flow 50mm RacePort Design
The GenV RacePort features a large 50mm inlet designed to provide substantial airflow capacity when the blow-off valve opens.
With a rated flow capacity exceeding 330 CFM, the RacePort is well suited for high-performance turbocharger applications requiring rapid charge pressure relief.
The large inlet allows compressed air to escape quickly when the throttle closes, helping reduce pressure buildup in the charge piping.
Proper valve sizing and placement are essential for achieving the intended performance.
Understanding Blow-Off Valve Operation
A blow-off valve is designed to release excess pressure from the turbocharger's charge piping when the throttle closes.
During acceleration, the turbocharger compresses incoming air and delivers it toward the engine.
When the throttle closes, airflow through the throttle body decreases rapidly.
The turbocharger compressor may continue producing pressure for a short period, creating a pressure buildup in the intercooler piping.
The RacePort responds to the pressure differential between the charge piping and the intake manifold reference signal, opening to release the excess pressure.
This helps reduce the conditions that contribute to compressor surge.
330+ CFM Airflow Capacity
Turbosmart rates the GenV RacePort at more than 330 CFM of airflow.
This high-flow capability is achieved through the valve's large inlet and optimized internal geometry.
The RacePort is particularly beneficial in turbocharger systems that move substantial volumes of compressed air.
The airflow rating refers to the valve's discharge capability and should not be interpreted as a guaranteed engine horsepower rating.
Sleeper Black Finish
The TS-0204-1135 features Turbosmart's Sleeper Black appearance.
This configuration incorporates:
Black anodized valve body.
Black locking collar.
Matching black pressure reference fittings.
Subtle performance-oriented styling.
The Sleeper finish is designed for enthusiasts who prefer a clean, understated engine bay rather than brightly colored aftermarket components.
It pairs particularly well with Turbosmart Sleeper Series external wastegates and other black performance hardware.
6000-Series Billet Aluminum Construction
The GenV RacePort is manufactured from 6000-series billet aluminum.
Billet aluminum construction provides a combination of strength, low weight, and precision machining capability.
The material allows Turbosmart to manufacture the valve body with accurate internal dimensions and a compact overall profile.
Its lightweight construction is particularly beneficial in custom turbocharger installations where packaging and component weight are important considerations.
Compact and Lightweight Construction
Turbosmart designed the RacePort to be significantly smaller and lighter than many comparable blow-off valves.
The manufacturer describes the design as approximately 50% lighter and 25% smaller than competing products.
This compact construction helps simplify installation in engine bays with limited available space.
The smaller overall profile is especially useful when the blow-off valve is mounted near intercooler piping, intake components, or surrounding engine hardware.
CFD-Optimized Internal Flow
The GenV RacePort was developed using computational fluid dynamics.
This engineering process allows airflow characteristics to be evaluated and optimized during product development.
The resulting internal geometry is designed to promote efficient pressure relief while maintaining compact dimensions.
Efficient discharge flow helps reduce pressure buildup in the charge piping when the valve opens.
High-Temperature Silicone-Nomex Diaphragm
The RacePort uses Turbosmart's proprietary high-temperature silicone-Nomex diaphragm.
The diaphragm responds to pressure differences between the charge piping and intake manifold reference signal.
This movement allows the valve to open and close as engine operating conditions change.
The diaphragm is designed for durability in demanding turbocharger environments.
A damaged or leaking diaphragm can cause improper valve operation and unwanted boost leakage.
MIL-SPEC Hard-Anodized Valve Guide and Stem
The GenV RacePort incorporates a MIL-SPEC hard-anodized valve guide and stem.
Hard anodizing creates a durable protective surface that improves wear resistance.
These components help maintain consistent valve movement during repeated opening and closing cycles.
Reliable valve movement is important for predictable pressure relief and proper sealing.
Positive-Sealing Valve Seat
The RacePort features a positive-sealing valve seat designed to help prevent boost pressure from escaping while the valve is closed.
During acceleration, the blow-off valve must remain sealed so compressed air can reach the engine.
Unwanted leakage can reduce boost pressure and affect turbocharger performance.
The positive-sealing design supports reliable operation when the valve is properly installed and configured.
Blue Spring Preinstalled
The TS-0204-1135 is supplied with a blue spring rated for approximately -18 to -14 inHg of engine vacuum.
This spring is intended for turbocharged engines operating within the corresponding vacuum range.
The spring controls how the valve responds to the pressure differential between the charge piping and intake manifold.
Correct spring selection is important for proper valve operation.
Important: Blow-off valve spring ratings are based on engine vacuum characteristics and should not be confused with wastegate boost pressure ratings.
Five Available Spring Configurations
Turbosmart offers five spring configurations for the GenV RacePort.
These options allow the valve to be configured for different engine vacuum characteristics.
The correct spring should be selected according to Turbosmart's recommended vacuum range.
An incorrect spring may cause the valve to remain open when it should be closed or fail to open properly during throttle transitions.
Alternative springs are available separately.
Quick-Release V-Band Mounting
The GenV RacePort features a quick-release aluminum V-band mounting system.
This arrangement provides a secure connection between the blow-off valve and its mounting flange.
The V-band design also allows the valve to be removed for servicing without cutting or modifying the charge piping.
The included profiled aluminum weld-on fitting is designed for integration into compatible custom intercooler piping.
Unique Locking Collar Design
Turbosmart's locking collar design allows convenient access to the internal spring assembly.
This design simplifies spring changes and general servicing.
The collar also contributes to the valve's compact construction.
Spring servicing should always be performed according to the manufacturer's instructions.
Dual 1/8-Inch NPT Reference Ports
The RacePort features two 1/8-inch NPT reference ports.
These ports provide flexibility when connecting the valve to an appropriate intake manifold pressure source.
The installer can select the port that provides the most convenient hose routing.
Unused ports must be sealed correctly to prevent vacuum or boost leaks.
The reference hose should connect to a suitable manifold pressure source downstream of the throttle body.
Atmospheric Venting Design
The TS-0204-1135 is an atmospheric blow-off valve.
When the valve opens, excess compressed air is released directly into the surrounding atmosphere.
This produces the distinctive discharge sound associated with high-performance turbocharged vehicles.
Atmospheric venting is commonly used in custom turbocharger systems and competition applications.
Important: Vehicles using mass airflow sensor-based engine management may experience drivability issues when metered air is vented to the atmosphere. Engine management compatibility should be verified before installation.
Optional Hall Effect Position Sensor
Turbosmart offers an optional Hall Effect position sensor cap for compatible GenV RacePort blow-off valves.
The position sensor allows the valve's operating position to be monitored by suitable electronic equipment.
This can be useful for advanced engine management systems, data acquisition, and diagnostics.
The position sensor cap is sold separately.
RacePort vs. Conventional Blow-Off Valves
The GenV RacePort differs from many smaller street-oriented blow-off valves through its large 50mm inlet and high-flow internal design.
Its primary advantages include:
Greater discharge airflow capacity.
Lightweight billet construction.
Compact overall dimensions.
Quick-release V-band mounting.
Serviceable spring configurations.
Durable internal valve components.
Optional electronic position monitoring.
These characteristics make the RacePort particularly suitable for high-output turbocharger systems.
Blow-Off Valve Placement
The RacePort should be installed in a location that allows efficient pressure relief from the charge piping.
Many custom turbocharger systems position the blow-off valve between the intercooler and throttle body.
The exact location depends on the turbocharger system design and available installation space.
Proper placement should also provide sufficient clearance for the valve outlet, vacuum reference hose, and surrounding components.
Engine Management Considerations
Atmospheric blow-off valves can affect engine operation depending on the fuel injection and airflow measurement strategy.
Speed-density systems using manifold pressure information are often more accommodating of atmospheric venting.
Mass airflow sensor-based systems may require additional calibration or a recirculating valve arrangement.
Professional tuning is recommended when modifying a turbocharged engine's charge-air system.
Common Reasons for Replacement
Upgrading From a Smaller Blow-Off Valve: Provides increased discharge airflow capacity.
High-Horsepower Turbocharger Builds: Supports pressure relief requirements for high-output forced-induction systems.
Compressor Surge Concerns: Helps reduce pressure buildup associated with sudden throttle closure.
Damaged Existing Blow-Off Valve: Replaces a worn, leaking, or malfunctioning valve.
Boost Leakage: Provides a replacement when an existing blow-off valve no longer seals correctly.
Custom Intercooler Piping Installation: Provides a 50mm V-band blow-off valve for fabricated charge piping.
Turbocharger Upgrades: Supports revised charge-air pressure relief requirements.
Engine Bay Appearance Upgrades: Offers a stealthy Sleeper Black finish.
Motorsport Applications: Provides high-flow pressure relief for competition turbocharger systems.
Valve Spring Configuration Changes: Supports alternative springs for different engine vacuum characteristics.
Turbo System Rebuilds: Provides a complete replacement blow-off valve assembly.
Preventative Replacement: Replaces aging or damaged pressure relief components.
Installation Notes
Verify Application Requirements: Confirm that a 50mm atmospheric blow-off valve is appropriate for the turbocharger system.
Confirm Engine Management Compatibility: Determine whether atmospheric venting is suitable for the vehicle's airflow measurement strategy.
Review Turbosmart Instructions: Read the current GenV RacePort installation documentation.
Allow the Engine to Cool: Never work on turbocharger or intercooler piping while hot.
Select the Installation Location: Choose a suitable location on the charge piping.
Check Engine Bay Clearance: Ensure sufficient room for the valve body and atmospheric discharge.
Prepare the Charge Pipe: Remove the piping as necessary for fabrication.
Position the Weld-On Flange: Align the supplied aluminum fitting with the charge pipe.
Weld the Flange: Use appropriate aluminum welding procedures.
Inspect the Weld: Check for cracks, contamination, and potential boost leaks.
Clean the Charge Pipe: Remove welding debris and contaminants before reinstallation.
Install the Blow-Off Valve: Position the RacePort on the supplied mounting flange.
Secure the V-Band Assembly: Install the clamp according to Turbosmart's instructions.
Verify Valve Orientation: Ensure the valve is correctly positioned and free from interference.
Select the Vacuum Reference Port: Use the port that provides the best hose routing.
Install the Vacuum Fitting: Use the supplied 1/8-inch NPT fitting.
Seal the Unused Reference Port: Prevent unwanted vacuum or boost leakage.
Connect the Reference Hose: Route the hose to a suitable intake manifold pressure source downstream of the throttle body.
Avoid Hose Restrictions: Prevent kinks, sharp bends, and excessive hose length.
Protect the Vacuum Hose: Keep the hose away from excessive exhaust heat.
Verify the Installed Spring: Confirm that the blue spring is appropriate for the engine's vacuum characteristics.
Select Alternative Springs if Required: Follow Turbosmart's spring selection recommendations.
Inspect All Connections: Check the V-band clamp, pressure fittings, and vacuum hose.
Perform a Boost Leak Test: Verify that the valve remains sealed under appropriate pressure conditions.
Start the Engine: Check for abnormal vacuum leaks or idle problems.
Verify Valve Operation: Confirm proper opening and closing during throttle transitions.
Monitor Engine Response: Check for hesitation, stalling, or drivability problems.
Review ECU Calibration: Make adjustments if required for the engine management system.
Perform Controlled Road or Dyno Testing: Verify correct operation under boost.
Reinspect After Initial Operation: Check the mounting assembly and vacuum connections.
Important: Incorrect blow-off valve installation or spring selection can cause boost leakage, compressor surge, and drivability problems. Professional installation and tuning are recommended for high-performance turbocharger systems.
What's Included
(1) Turbosmart GenV RacePort 50mm Blow-Off Valve – Sleeper Black (TS-0204-1135)
(1) Preinstalled Blue Spring Rated -18 to -14 inHg
1/8-Inch NPT Vacuum Reference Fittings
(1) Quick-Release V-Band Mounting Assembly
(1) Profiled Aluminum Weld-On Fitting
(1) Turbosmart Decal
Note: Additional springs, Hall Effect position sensor components, custom intercooler piping, vacuum hose, and other installation accessories are sold separately unless otherwise specified.
Experience exceptional charge pressure relief with the Turbosmart GenV RacePort 50mm Blow-Off Valve – Sleeper Black (TS-0204-1135), engineered for high-performance turbocharger systems requiring substantial airflow capacity, dependable sealing, and rapid valve response.
Featuring a 50mm inlet capable of flowing more than 330 CFM, lightweight 6000-series billet aluminum construction, a stealthy black-on-black finish, MIL-SPEC hard-anodized valve components, high-temperature silicone-Nomex diaphragm, and quick-release V-band mounting, the RacePort delivers outstanding performance in a compact package.
Whether building a turbocharged Honda K20/K24, upgrading a B-Series forced-induction system, or assembling a custom high-horsepower motorsport application, the Turbosmart TS-0204-1135 GenV RacePort Sleeper provides the airflow capacity, durability, and precision engineering expected from Turbosmart.
| Part Number: | TS-0204-1135 |
| Brand: | Turbosmart |
| Color: | Black |
| Size: | 50mm |
| CARB Approved: | No |
Not legal for sale or use in California on any pollution controlled motor vehicles. See http://www.semasan.com/emissions for state by state emissions requirements.
There is a 5% cancellation fee if you order this product and want to ship it to the state of California.
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
This part does not have vehicle specific fitment. Please contact us if you need assistance.
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