Trying to figure out a starting point for the size of the opening at the bottom of the cowl. I’ve searched the archives and found multiple threads but nothing that is definitive such as a picture.
For background, Rv4, 150hp O-320 Vetterman 4 pipe exhaust. Aircraft has not flown yet. Ground runs with the cowling installed result in CHTs reaching 400F in a relatively short period. (Didn’t run timer so not sure of actual time, wasn’t expecting this to be an issue.)
Anyone have a photo of their lower cowl exit area?
Thanks, Tom
For background, Rv4, 150hp O-320 Vetterman 4 pipe exhaust. Aircraft has not flown yet. Ground runs with the cowling installed result in CHTs reaching 400F in a relatively short period. (Didn’t run timer so not sure of actual time, wasn’t expecting this to be an issue.)
Anyone have a photo of their lower cowl exit area?
Thanks, Tom