Hi...new to the forum.
I have a problem with my 79 Johnson 70 hp over revving.
The boat is a 1979 Skeeter SS-1 Fisherman (15.3)
The prop is an old SST 13 1/4 X 17.
The boat gets on plane OK I think. Now I'm on plane with the engine trimed with antivent plate level with the bottom of the boat. I guess you would say neutral? When I'm at 4000 rpm I am only at half or 5/8 throttle. When I go to WOT the engine will easly go to 6000 rpm which I don't leve it there long at all because I know the engine is only good to 5500 rpm. I would like to see 5200 or 5400
Could I go with a 13X19 SS? Also would anyone know if this engine has the small or large lower unit.
I hope I asked the questions in the right order?
Thanks,J.Avant
I have a problem with my 79 Johnson 70 hp over revving.
The boat is a 1979 Skeeter SS-1 Fisherman (15.3)
The prop is an old SST 13 1/4 X 17.
The boat gets on plane OK I think. Now I'm on plane with the engine trimed with antivent plate level with the bottom of the boat. I guess you would say neutral? When I'm at 4000 rpm I am only at half or 5/8 throttle. When I go to WOT the engine will easly go to 6000 rpm which I don't leve it there long at all because I know the engine is only good to 5500 rpm. I would like to see 5200 or 5400
Could I go with a 13X19 SS? Also would anyone know if this engine has the small or large lower unit.
I hope I asked the questions in the right order?
Thanks,J.Avant