Here is the latest.
Got the boat onto the slipway last week. Prop supplier re-pitched the Kiwi Prop down a full turn on the blade set crews which should have given around 600-800 rpm
increase according to Kiwi Props website. Cleaned the bottom too so I could get an accurate comparison.
Took her out for a spin and we saw max revs go from 2,500 to 3,050 (550 rpm
Can't get more than 3,000rpm though and when I try (there is some throttle opening left) I get black smoke.
So I'm on the right track I guess....
Issue I have now that I didn't have before the IP was 'recalibated' is that I seem to get a lot of fuel
in the exhaust
throughout the rev range, even at medium load (say 2,000 rpm). The prop supplier has now told me that the compnay that did the IP recalibration said they did two things to it - reset the max revs from 4,000 to 4,400; and increased the fuel
Does this sound normal and why should the fuel quantity and max revs have been wrong in the first place?
Will excess fuel damage my new engine
Any comments welcome.