slaw76
I'm New Here
I know it was asked before but I figured I'd start a fresh thread with details pertaining to my situation.
Let's start with a brief video demonstrating the problem, I recommend watching to the end so you can get an idea of time for the whole sequence of down-up-down-up:
https://photos.app.goo.gl/SzGkqARbpCdVgjrw8
Context: just finished the built, new IO-540 engine at ~50hrs, on a hot day. This occurs only when the engine is hot and not in level flight. Never during the run-ups at start of day. Even when the gauge reports PSI is dropping, the engine seems ok; no signs of starvation that I can hear or feel. Boost pump stabilizes the pressure right away. Switching fuel tanks mid problem does not have a positive nor negative impact.
In a similar thread, builders suggested adding insulation - can anyone post a photo of their handy work insulating the relevant pieces and what materials were used? I gather the flow meter along with the short intake pipe sits right above the exhaust. On a slow descend the fumes are pushed up, heating up the floor, fuel lines, cube, etc. I want to start by wrapping the fuel lines/red box in insulation or lay insulation on the floor. If anyone can recommend ideal materials for the job go for it.
Safe returning home from Osh to everyone.
Let's start with a brief video demonstrating the problem, I recommend watching to the end so you can get an idea of time for the whole sequence of down-up-down-up:
https://photos.app.goo.gl/SzGkqARbpCdVgjrw8
Context: just finished the built, new IO-540 engine at ~50hrs, on a hot day. This occurs only when the engine is hot and not in level flight. Never during the run-ups at start of day. Even when the gauge reports PSI is dropping, the engine seems ok; no signs of starvation that I can hear or feel. Boost pump stabilizes the pressure right away. Switching fuel tanks mid problem does not have a positive nor negative impact.
In a similar thread, builders suggested adding insulation - can anyone post a photo of their handy work insulating the relevant pieces and what materials were used? I gather the flow meter along with the short intake pipe sits right above the exhaust. On a slow descend the fumes are pushed up, heating up the floor, fuel lines, cube, etc. I want to start by wrapping the fuel lines/red box in insulation or lay insulation on the floor. If anyone can recommend ideal materials for the job go for it.
Safe returning home from Osh to everyone.
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