pa38112
Well Known Member
I purchased an already flying RV6A with a known oil temp. problem on hot days. The builder tried to avoid the usual high oil temp. problem by installing the cooler behind a NASA duct on the cowling instead of in the typical location at the back of the plenum.
Engine: 0-360
Prop: F.P.
Cowling: Sam James
Oil Cooler: Postech 7 row (P20003C)
Oil Temps: 190F at 70F ambient; 230F at 100F ambient
Delta P accross the cooler: 0.8 Inches H2O
I though the problem could be that there is not enough pressure drop (air flow) accross the cooler. My plan was to duct the cooler exhaust to a low pressure area at the bottom of the cowling. Today I installed some termpoary tubing at verious locations inside the cowling to find the best delta pressure from the cooler intake side to the exhaust side. What I found on my test flight is that the exhaust is already at the lowest pressure area inside the cowling.
Im wondering:
a.) If anyone is successfully cooling an 0-360 with the same oil cooler I have?
b.) Does anyone know what the pressure drop is accross their oil cooler? I don't know if 0.8" is hight, low, or about right.
![x6m84.jpg](/community/proxy.php?image=http%3A%2F%2Fi48.tinypic.com%2Fx6m84.jpg&hash=cbdd3f264300ced6d40b8a26331c7e87)
Engine: 0-360
Prop: F.P.
Cowling: Sam James
Oil Cooler: Postech 7 row (P20003C)
Oil Temps: 190F at 70F ambient; 230F at 100F ambient
Delta P accross the cooler: 0.8 Inches H2O
I though the problem could be that there is not enough pressure drop (air flow) accross the cooler. My plan was to duct the cooler exhaust to a low pressure area at the bottom of the cowling. Today I installed some termpoary tubing at verious locations inside the cowling to find the best delta pressure from the cooler intake side to the exhaust side. What I found on my test flight is that the exhaust is already at the lowest pressure area inside the cowling.
Im wondering:
a.) If anyone is successfully cooling an 0-360 with the same oil cooler I have?
b.) Does anyone know what the pressure drop is accross their oil cooler? I don't know if 0.8" is hight, low, or about right.
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