2004 Yamaha 115 4stroke prop or engine issue?

Jhwaco

Cadet
Joined
Jul 13, 2019
Messages
18
I recently purchased a 2005 19 fr CC with Yamaha 115 4 stroke. It has stainless steel 3 blade that reads 19k. From dead stand still to WOT it takes about 10 seconds to plain. The RPMS soon as you hit the throttle is around 4000. With the motor trimmed up to where the prop starts to break lose is about 5200. Speed is around 32 mph. I’ve noticed the boat doesn’t change much on pitch between trimmed down or up. The rpm is around 150 difference. I’ve also jacked the boat up high in front trying drain it thinking maybe the hull had water.

could someone give lead me in the right direction. I was looking into four blade props but don’t know which one to go with. I’d rather have more hole shot and plain than top end speed. Also could the engine not be performing correctly? Idling and running across the lake the engine runs smooth to me but doesn’t pick up rpms quick on take off it. Thanks in advance
 

rat boat

Seaman Apprentice
Joined
Oct 26, 2019
Messages
40
I think Yamaha has some resources and there are a few "prop finder" sites. I think iboats has one.
 
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