grizzrider09
Seaman
- Joined
- Jun 20, 2012
- Messages
- 54
Let me give you guys some history. I bought a brand new boat in 2013. Its a Crestliner Vt 17. It came with a 60hp 4stroke merc that had a 13p vengance stainless prop on it. The boat had an awful hole shot right from the start. I called the dealer and they told me that it was just how it was going to be with a 4 stroke engine. The boat would run around 34 mph. I decided to buy a fin to go on it and see if that would help and it did. I kept it that way until a few months ago. I have a friend who has a tracker boat with the same engine and he is running a 4 blade spitfire and loves it. The boat comes up on plane great and will run about 36. So I bought a 12p for my boat. I took the fin off and ran it. Top speed was 30 mph at 6100 rpm. I decided rpms were to high and bought a 14p 4 blade. Top speed was 32 mph and rpms were 5300. So then I swapped out with my friend like I should have done to start with and put his 13p 4 blade spitfire on my boat. Top speed is 31 with 5900 rpms. I'm ok with that but the boat is porpoising really bad with two people in it and there is a ton of spray with all of these props except the 12p. It looks to me like the motor is just buried in the water when its running but that may just be the way it should be. Do you guys think I'm just running the wrong prop or could my motor be mounted to low?