I am getting 9 to barely 10 at 2800. I verified the tach on the boat and it is spot on.
The engine is is perfect shape, has had compression test and blowdown all within factory norm. I wonder a bit about the reduction gear being so low. Maybe more rpm on the prop would help??
But It feels like the engine is barely loaded even at 2.5 to 1. I have had other boats where you could tell that the engine was loaded your could hear it bog down when you throttled up. The perkins just flows through the throttle range in gear, even if done quickly with no noticeable change in pitch from the engine. The boat accelerates quickly to cruise speed.
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