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- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Rennen Crankshaft Position Sensor Wheel for Rennen by JSR Individual Barrel Throttle Body Upgrades
The Rennen Crankshaft Position Sensor Wheel is a precision-engineered trigger wheel designed specifically for use with Rennen by JSR Individual Barrel Throttle Body (ITB) conversions. Supplied as the toothed outer ring only, this component is designed to be TIG welded directly onto the engine's crankshaft pulley, creating the precise trigger pattern required by modern standalone engine management systems.
Fits:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
When upgrading a Porsche engine to Rennen by JSR Barrel ITBs, accurate engine position data becomes essential. The trigger wheel works in conjunction with the crankshaft position sensor to provide the ECU with precise information regarding crankshaft position and engine speed. This data forms the foundation of all ignition and fuel injection calculations.
Without a trigger wheel and crankshaft position sensor system, modern programmable ECUs cannot accurately control ignition timing, fuel injection events or advanced engine management strategies. As a result, the trigger wheel is one of the most important supporting components required for a professional ITB conversion.
What Does a Crankshaft Position Sensor Wheel Do?
The crankshaft position sensor wheel rotates with the engine crankshaft and passes a series of precision-machined teeth past the crankshaft position sensor.
As the teeth pass the sensor, electrical signals are
generated and transmitted to the ECU. The ECU uses this information to
determine:
- Crankshaft position
- Engine speed (RPM)
- Ignition timing reference
- Fuel injection timing
- Engine synchronisation
- Rev limiting functions
- Sequential engine management strategies
This information allows the ECU to accurately control every aspect of engine operation.
Why Is a Trigger Wheel Required for ITB Conversions?
Rennen by JSR Barrel Throttle Bodies are typically installed alongside a standalone ECU to maximise performance and drivability.
The ECU requires an accurate crankshaft reference signal to:
- Fire ignition coils at the correct time
- Control fuel injection events
- Support sequential fuel injection systems
- Enable advanced ignition mapping
- Improve throttle response
- Stabilise idle quality
- Improve engine calibration accuracy
The trigger wheel effectively provides the ECU with a digital reference point for every engine revolution.
Without it, modern EFI systems cannot operate correctly.
TIG Welding Installation
This Rennen Trigger Wheel is supplied as the toothed outer ring only and is intended to be TIG welded directly onto the crankshaft pulley as part of the engine management conversion process.
Benefits of this design include:
- Precise positioning on the pulley
- Excellent durability
- Secure long-term attachment
- Motorsport-grade reliability
- Compatibility with custom engine management installations
- Professional conversion solution
Correct installation and positioning are critical to ensure accurate sensor readings and ECU synchronisation.
Why Are Barrel ITB Upgrades So Popular?
Rennen by JSR Barrel Throttle Bodies deliver one of the most dramatic upgrades available for naturally aspirated Porsche engines.
Benefits include:
- Instant throttle response
- Increased airflow efficiency
- Improved engine breathing
- Greater power potential
- Enhanced torque delivery
- Exceptional induction sound
- Motorsport-inspired driving experience
- Stunning engine bay presentation
When paired with modern engine management and accurate crankshaft position monitoring, the system delivers outstanding performance and drivability.
Why Choose the Rennen Crankshaft Position Sensor Wheel?
Developed specifically for Rennen by JSR ITB applications, this trigger wheel provides the precision required for professional ECU calibration and reliable engine operation.
Benefits include:
- Accurate crankshaft position reference
- Supports standalone ECU systems
- Essential for EFI conversions
- Enables precise ignition timing
- Supports advanced fuel injection strategies
- Suitable for road and motorsport applications
- Reliable long-term performance
- Professional-grade installation solution