I have a 2004 Misty Harbor 2585 GM and a 130HP 4 Stroke Honda. I want to buy a spare prop and I'm not sure if the prop I have is the proper size. It's an aluminum Honda prop 13.5x15
I went to the Honda sight to choose a prop based on my boat weight etc etc and it say's to use a 14x11
According to NADA my boat weighs 2320 dry and no motor??? Does that sound right for a 25 foot pontoon?
I figured 6 people in the boat at 180 each. 1080 pounds
24 gallons of fuel
I wish I could remember the rpm's I turn at WOT but it seemed low like under 4000 rpm if I remember right. My boat will do 24 mph with 6 people on it. I get great fuel consumption if I take it easy but when I run it over half throttle I get terrible fuel consumption. I want to maximize fuel due to not having enough places to fuel up on the water. I've almost run out a couple times.
What do you guy's think I should do? Hopefully I have given you enough information.
Thank you, Brett
Need help with choosing a prop.
Moderators: Redneck_Randy, badmoonrising, lakerunner
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- Posts: 8
- Joined: Thu Feb 10, 2011 12:51 pm
Need help with choosing a prop.
2004 Misty Harbor 2585 GM
130 hp Honda 4 stroke
25" tubes
130 hp Honda 4 stroke
25" tubes
Re: Need help with choosing a prop.
Those numbers don’t sound right. Go test again under the regular load you normally carry.
You can expect 180-200 change in Rpm between prop sizes.
Go get an exact WOT reading and calculate from there. That boat should turn more rpm with a 15 I would think. Double check the numbers.
You can expect 180-200 change in Rpm between prop sizes.
Go get an exact WOT reading and calculate from there. That boat should turn more rpm with a 15 I would think. Double check the numbers.
Re: Need help with choosing a prop.
Go out on your boat with a couple of people and 1/2 tank of fuel. Then take note of your speed (gps) and maximum rpms. Are you getting any prop ventilation in a tight turn?
Then com back on this forum with specifics.
Then com back on this forum with specifics.
'12 Bennington 24' SSLX Yamaha 150
Re: Need help with choosing a prop.
An aluminum 13.5x15 prop should be pretty close for that motor. You might want to confirm that your tach is working. I just cant see that motor not spinning it to at least 5000 rpms. You will want to be 5500 to 5800 I think.
Going with a 14" dia will help with ventilation if thats an issue.
Going with a 14" dia will help with ventilation if thats an issue.
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- Posts: 8
- Joined: Thu Feb 10, 2011 12:51 pm
Re: Need help with choosing a prop.
I'm going off memory but you're right I need to go back out and do the things mentioned. I will record tach and other info and report back. I'm in Iowa so we just had snow yesterday.
2004 Misty Harbor 2585 GM
130 hp Honda 4 stroke
25" tubes
130 hp Honda 4 stroke
25" tubes