engine height quest

[Dali30]

Is it the lower fin or upper one, on gearhouse that should be flush with center of boat floor,in a lack of better therm for it but i hope you understand.

 

[Dali30]

The engine is a bit oversize for boat,but damn it points almost too much up in front before it planes. Im not sure i have mounted it at the right height.

 

[Bosunsmate]

Is it the lower fin or upper one, on gearhouse that should be flush with center of boat floor,in a lack of better therm for it but i hope you understand.

I hear ya, that would be the anticavitation plate, it has to be in line with the bottom of the hull as at speed the boat pretty much lifts out of the water and that plate is at sea level and helps stops caviation bubbles. Post a pic if you can

 

[Bosunsmate]

The engine is a bit oversize for boat,but damn it points almost too much up in front before it planes. Im not sure i have mounted it at the right height.

A bit oversize does that. i had 60hp on a boat rated for 30hp, hotdang. What you need to do is put some weight in the front of the bow, like some sandbags, and also strengthen your transom where the motor sits if its much too big as trust me things crack in the end

 

[Dali30]

I hear ya, that would be the anticavitation plate, it has to be in line with the bottom of the hull as at speed the boat pretty much lifts out of the water and that plate is at sea level and helps stops caviation bubbles. Post a pic if you can

Ok then it is at right height. The boat is a 4.7 meter or 15 fot. It has max limit 55hp,its silver viking sport 15. Maybe i should try with some weight in front,thinking of selling the engine and get a 60-70hp evinrude instead.its about 35kilos lighter than v4.