Those flames add at least 50 horsepower haha. I’d say the valves might have been a little rusted. I’m pretty sure he knew and changed the oil right before he started it for me. Motor only had 75 hours.
Bought a boat with 2 357 mag bravo 4v sterndrives. First ride ran great, brought it back to the dock and left for the night. Came down the next day to find that the port motor had gotten water in the oil. Stupid me never checked compression before buying it and multiple cylinders were under 100...