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Subject    EGT sensors

We are installing 4 EGT (exhaust gas sensors) one for each cylinder.  It seems that on our exhaust system made from .032" stainless steel that it is impossible to place all four sensors at the same distance from the exhaust flange.  The sensors are the type that poke through a hole in a stainless steel hose clamp. Does anyone know how critical it is to get the sensors the same distance from the exhaust port.  It seems like we could install these sensors somewhere between 2" and 4" from the port. Is this close enough? or will we get a significant change in temperature reading just from the varying position of the sensors?  We could possibly install one or two of the sensors on a curved section of the exhaust tubing but feel that the stainless steel hose clamp that holds the sensor in may wear into the exhaust pipe on the opposite side to the sensor.

Regards to everyone,

Chris Moore   (VH-OIO Australia)