ighazali Posted October 27 Author Report Posted October 27 On 10/25/2025 at 9:24 PM, 47U said: I think you can make the new baffles following the pattern of the baffles that you remove. It looks like the rear baffle is the worst offender, the sides and front might be ok. Other notes (please forgive)… there’s a plenum just outboard of the upper left engine mount. I think there’s supposed to be a scat duct attached that directs cooling air down to the fuel pump on the back of the accessory case. Also, there’s a baffle screw missing on the rear baffle joint to the side baffle, third hole down… or is that where the ignition lead adel clamp is supposed to go(?). Regardless, that adel clamp is not secure and with the screw loose, possibly another source of air leakage. Lastly the prop governor cable is chaffing on the engine mount tube. There’s some spiral wrap on it, but it looks like the paint is gone and some rust forming on the tube. Thank you so much all of this is great information! I will get that engine mount tube painted. Also I will have a screw install on the right side and the bottom screw tightened, I will also get with my A&P and re do the back of the baffles and get that scat tubing in to get it corrected. I will also see what I can do with that prop governor cable!
ighazali Posted October 27 Author Report Posted October 27 I ran the engine 25 degrees lean of peak today and granted today was a slightly cooler day but check the temps. I am sure once I get the things corrected you all listed it will definitely go down!
Slick Nick Posted October 27 Report Posted October 27 9 hours ago, ighazali said: Airplane had come out of a fresh annual and I was able to get 10,000 dropped for inop pitot heat and possibly "faulty cht guage" is what the A&P IA said. At least that leaves you some money to get this stuff fixed. So, you're sure the CHT gauge is working properly?
ighazali Posted October 28 Author Report Posted October 28 16 hours ago, Slick Nick said: At least that leaves you some money to get this stuff fixed. So, you're sure the CHT gauge is working properly? Based on the indications I am receiving yes. When I run it lean of peak I see CHT temps cooler, when I run it rich of peak I see it hotter just like my initial picture shows. My only thing is that is it normal to see oil temps as cool as shown?
Slick Nick Posted October 28 Report Posted October 28 7 hours ago, ighazali said: Based on the indications I am receiving yes. When I run it lean of peak I see CHT temps cooler, when I run it rich of peak I see it hotter just like my initial picture shows. My only thing is that is it normal to see oil temps as cool as shown? I was referring to your last post where your A&P diagnosed a “faulty CHT gauge”.
ighazali Posted October 29 Author Report Posted October 29 On 10/28/2025 at 7:44 AM, Slick Nick said: I was referring to your last post where your A&P diagnosed a “faulty CHT gauge”. That is what we thought based on temps but after diagnosing the sensor and moving it to cylinder 1 and ran it for a flight and back to cylinder 3 we came to the conclusion that it was working properly as cylinder 1 temps were super cool since it is in front of the engine bay!
Slick Nick Posted October 29 Report Posted October 29 The sensor is usually located on #3 because it’s the hottest cylinder. So, you’ve flown it a few times since trying to diagnose this issue, have you fixed the baffles yet?
ighazali Posted October 31 Author Report Posted October 31 On 10/29/2025 at 4:36 PM, Slick Nick said: The sensor is usually located on #3 because it’s the hottest cylinder. So, you’ve flown it a few times since trying to diagnose this issue, have you fixed the baffles yet? Yes I have and temps have been dropping and are not as high as they used to be! 1
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