kevinfishman36
Recruit
- Joined
- Dec 21, 2014
- Messages
- 4
Hi, i recently bought a new to me boat and am having issues with it, its a 19' deep v aluminum lowe. It is powered with a 115 evenrude. The motor is lowered all the way down on the mounting holes has power trim ( for further explination) Motor came with a 19 pitch 14 diameter prop. At full throttle, the boat jumps out of the water and at top end is running at 6100 rpm with 4 men in it, max at around 34 mph. So after researching a little on the engine, max wot is supposed to be 5500 rpm. OK so i better not run the boat at full throttle!!! First problem that i am having is that when in a little choppy water, i am getting some prop ventilation when doing any turning- and yes, i have the trim all the way in or down, any adjustment up, and it will ventilate more. So after researching why this is happening i figured i better go up a few pitches in prop, to drop the r's down to recommended specs. So i buy a 3 blade 23 pitch 12 3/4 diameter prop off ebay and tried it out yesterday. Had 3 people in it, and some gear, when i floored it, the boat got on plane good, and seemed right away to be the ticket, but as it hit 23 mph, the prop ventilated and engine went sky high, and had to shut the throttle down. Made sure the motor was trimmed all the way in and tried again and again, only to realise that after 23 to 25 mph the prop ventilates. So my question, after doing alot of internet searching, is = what is my best option... have looked at extending the lower unit- have looked at cutting and drilling another lower set of holes in the transom (which i don't think there is really enough room to lower it. Or do i try a 4 blade prop? OOps forgot to tell you that the cavitation plate is about even with the bottom of the boat, maby 1/2 inch above bottom of boat. Thanks for any help and good advise!!