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Date: 11-26-2025
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Number of Hours: 3.70
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Short Description: FWF #32 - EGT Probe work
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Tonight, I began the installation of the Exhaust Gas Temperature (EGT) probes. I did my research, reviewed the installation diagram and instructions, and started taking measurements on the exhaust pipes. The main objective is to drill holes in the pipes to accommodate probes that extend into the exhaust gas stream. It's crucial not to place them too close to the exhaust ports, as they won't last as long if they are positioned in the exhaust fire cone. According to the instructions, the probes should be at least 2 inches away from the exhaust pipe flange.
Additionally, I want to ensure that all probes are installed at the same distance to provide a consistent exhaust profile. Another important consideration is that the probes will protrude, so they must not interfere with the spark plug, spark plug wires, or any other components already on the engine. Keeping that in mind, I measured all four pipes and determined that a placement of about 2.25 inches down from the exhaust pipe flange worked best for all of them.
I marked and drill-punched all four pipes, and I successfully drilled and installed the EGT probes in two of the pipes on the left side. I also torqued the clamps in place. While the probes still need to be safety-wired, I will address that in the next session.
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Two left side probes installed
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