Ecumaster EGT Sensor Boss / Mount The Ecumaster EGT Sensor Boss/Mount is the critical hardware interface for securing K-Type thermocouples into an exhaust manifold. This assembly, often referred to as a "compression fitting," consists of a weld-on bung, a threaded body, and a compression olive. It is engineered to provide a gas-tight seal at temperatures exceeding 1200°C and pressures common in high-boost turbocharged applications. The M10x1 standard is the official specification for the Ecumaster Professional EGT (Inconel sheath) sensors, while 1/8" NPT variants are frequently used for compatibility with WHP and third-party motorsport sensors. Technical Authority & Key Features Adjustable Immersion Depth: The compression olive allows you to set the probe depth precisely. For the most accurate data, the sensor tip should be positioned in the center of the exhaust gas stream. High-Speed Thermal Stability: Designed to house 3mm or 5mm probes, providing a rigid mounting point that prevents the vibration fatigue often responsible for "jumping" EGT readings or sensor failure. Gas-Tight Metal-to-Metal Seal: Once the compression nut is tightened, the olive deforms around the sensor sheath, creating a permanent, leak-proof mechanical bond. Corrosion Resistant Materials: 304/316 Stainless Steel: Superior for stainless manifolds, providing long-term resistance to heat-cycling and moisture. Mild Steel: Common for cast iron or mild steel headers, allowing for easier welding with standard MIG/TIG setups. Compatibility: Native support for the Ecumaster EGT to CAN module, EMU Black, and ADU logging strategies. Technical Specifications Feature M10x1 Version (Standard) 1/8" NPT Version SKU E45 WHPEGTB Bung Material 303/304 Stainless Steel Stainless or Mild Steel Probe Size 3mm (Standard Inconel) 3mm or 5mm (WHP) Thread Type M10 x 1.0 (Metric Parallel) 1/8" NPT (Tapered) Max Temperature 1300°C 1250°C Fitting Diameter 6mm (Anti-vibration base) 6mm or 1/4" Installation Best Practices Manifold Placement: Position the boss approximately 50mm to 100mm from the cylinder head exhaust flange for individual cylinder monitoring. Angle of Entry: Install the sensor at an angle that prevents moisture/condensation from collecting inside the bung, which can lead to probe corrosion over time. Sealing Note: Never use PTFE tape or plastic sealants on EGT mounts. Exhaust temperatures will vaporize these materials instantly. The mechanical compression of the olive provides all necessary sealing. Tightening: Once the depth is set and the nut is tightened, the probe is permanently "locked" in that olive. To change depth later, a new olive and nut are typically required.
