Prop for Navigator 165 tiller

[Brad Adrian]

Hi, first post here. I have a 2006 Alumacraft Navigator 165 tiller with a 60 hp Yamaha 4 stroke. Right now, I have a top speed of about 27 mph on the GPS with a full tank of gas. It is also very slow to get on plane, and I have to trim the engine to get it there. I spent hours going back into old posts looking for an answer to this problem. The boat does not porpoise. I currently have a 13 pitch steel prop on it. Any suggestions on props and motor mounting height would be greatly appreciated.

Another question, I see the letters WOT in alot of these threads and am wondering what that means--Brad

[smoker62]

Wide open throttle. What rpms are you spinning at wot??

[Brad Adrian]

Thanks Smoker. 5600 RPM.

[KP]

[QUOTE=Brad Adrian;1098163] It is also very slow to get on plane, and I have to trim the engine to get it there. I currently have a 13 pitch steel prop on it. Any suggestions on props and motor mounting height would be greatly appreciated.


What do you mean by having to trim to get it there? You should always begin with your motor fully trimmed in, and then gradually trim out to pick up speed AFTER you get on plane. Unless you are plowing so bad with the motor fully trimmed in which would be an indicator of too much weight in front.

When you say a 13 pitch steel prop I'm assuming you mean stainless steel. It that what the dealer set you up with?

You are pretty close to the Max WOT RPM for that motor. If the motor is currently mounted all the way down on the transome, you might want to trying raising at least one hole and maybe better two holes.

[Brad Adrian]

Thanks for the reply KP. It is not a stainless prop, so maybe they are aluminum, not steel. This is my first non-jet outboard, so this is pretty new to me. I do have to use the trim to get the boat up on plane, and it does seem to plow. Maybe raising the motor up is the answer. The motor is mounted all the way down.

[Thane]

You might try with raising the motor up one hole or maybe two. My Alumacraft Magnum 165CS had the engine mounted on the 2nd lowest hole and I had a fair bit of spray from the front of the bottom end also with a fair bit of porpoising. I eventually raised the engine to the highest setting and found performance was much better. Check into Nauticus smart tabs. I installed them on my boat and increased holeshot. Check out the link. http://www.ebuyersworld.com/Smart-Ta...tabs-s/149.htm
I found them to be a good investment on my boat.

Do you have the stock Yamaha prop? Maybe you could look into a Hustler prop. A friend of mine changed his Yamaha from the stock to a Hustler and noticed better hole-shot and top end.

[Drummer Boy]

I would raise the motor I have a Navigator with a 75 and it runs much better now that I raised it.It was one from the top and i raised it one and might go right to the top when I have time.

[Bigfishhunter]

Sorry, don't mean to hijack here, but how does one go about moving a big motor (75) up and remounting it themselves? Is it something that I can do myself or does a shop need to do it?

[Hot Runr Guy]

Originally Posted by Bigfishhunter

Sorry, don't mean to hijack here, but how does one go about moving a big motor (75) up and remounting it themselves? Is it something that I can do myself or does a shop need to do it?

Here's a recent thread on that subject. What motor do you have?
http://www.walleyecentral.com/forums...=lifting+motor

HRG