I received the exhaust pipes from Custom Aircraft Parts (model 33279 with the studs for better heat exchange):
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| Exhaust parts after unboxing |
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| Heat-exchanging studs around the exhaust pipes |
I test-fit them on the engine, and took the opportunity to mark all the EGT sensor and O2 sensor holes:
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| Exhaust pipes attached to the right side of the engine |
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| Exhaust pipes attached to the left side of the engine |
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| Exhaust tube markings for the EGT sensor holes |
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| Exhaust tube marking for the last EGT sensor hole |
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| Assessing EGT sensor interference with the spark plug wires |
I then drilled those holes and installed the EGT sensors in them:
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| EGT sensor attached to exhaust tube |
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| EGT sensors attached to exhaust tubes |
The O2 sensor hole is significantly larger (7/8"), and required welding a bung to it (I just paid someone to do the welding part):
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| Oxygen sensor bung, welded to the exhaust tube |
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| Oxygen sensor and EGT probe attached to aft left exhaust tube |
With this, the exhaust stack is ready to install in place.
Time lapse:
Total exhaust time: 5.1h
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