Originally Posted by
amzhkm147
Engine #1 passes the chart and engine #2 is borderline pass the chart with 83% of TQ and during hot day #2 engine TQ will be somewhere at 81-82 %
Keep in mind some small twin engine aircraft have an inherent operating difference due to how the airstream/rotorwash crosses over the #1/#2 engine cowling intakes. Sometime it can be as high as 20 degrees TOT.
Given you have replaced so many engine components are you saying you still have the same instrument reading on the #2 engine?
Are you performing the ground power checks into the wind? Have you tried performing 3 separate power checks at different headings and compare them?
In line with what was mentioned above, have you blocked off the customer bleed air fitting at the engine scroll?