Carb vs fuel injection?
#1
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Joined: Oct 2010
Posts: 142
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From: plymouth, ma
I am pulling the motor out of my 25 outlaw this week to make some transom assembly repairs, (swivel pin and seal) replacement. I am currently running a slightly modified NA 509 mpi fuel injected motor. Over the winter I purchased a complete setup to switch over to carbureted.... Dart intake Holley carb, fuel pump and regulator, msd distributer,blaster coil, and msd blue box.
So my plan is to make the swap while the motor is out. I'm sure there will be a few other small things that I will need to purchase to complete the swap.
My feeling is that there is a little more hp and speed to be had by switching to carb. Most might say that fuel injection is better but others say if the carb is tuned right then it's just as reliable as fuel injection.
I will be selling the boat this summer. By going to a carb what is that going to do to resale make it better? Worse? Or not change it? I just figured that if the boat doesn't sell right away as the used boat market seems slow,at least I would be running the season with the motor setup the way I wanted it to be with a carb!
So guys what are your thoughts go carb or am I just being crazy!
So my plan is to make the swap while the motor is out. I'm sure there will be a few other small things that I will need to purchase to complete the swap.
My feeling is that there is a little more hp and speed to be had by switching to carb. Most might say that fuel injection is better but others say if the carb is tuned right then it's just as reliable as fuel injection.
I will be selling the boat this summer. By going to a carb what is that going to do to resale make it better? Worse? Or not change it? I just figured that if the boat doesn't sell right away as the used boat market seems slow,at least I would be running the season with the motor setup the way I wanted it to be with a carb!
So guys what are your thoughts go carb or am I just being crazy!
#2
All I have ever had was stock power. All of it has been carbed and have never had problems with it. At cold a couple pumps of the throttle and crank till they start. When warm just turn the key and they fire right off.
I think the main advantages to injection is they are easier to start and a bit better on fuel. What I do see is tons of posts when they have problems with the injection.
I think the main advantages to injection is they are easier to start and a bit better on fuel. What I do see is tons of posts when they have problems with the injection.
#3
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Joined: May 2011
Posts: 576
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From: Varna, IL
I like efi but carbs are perfect for the diy'er.only thing i don't like is between my cams and props I've got my idle set about 1300 in neutral to keep it running in gear.efi compensates to maintain a set rpm which i miss.so i guess im torn
#6
Odds are better when trying to sell a boat with a stock motor in it versus a modified motor.
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Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
#8
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Joined: Jun 2010
Posts: 314
Likes: 1
From: Riverside, MO
I have always thought the only advantage of carbs is they are cheaper. Everything i have read states when set up right, they are as good as fi. All things equal, i will take the fi boat with stock power long before the hopped up carbed up engine. Just one opinion and we know what that means.
#9
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Joined: Oct 2010
Posts: 142
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From: plymouth, ma
Thanks guys!
I understand where you are coming from with regards to stock power, however I don't have stock power so I can only work with what I have. My current power is a 509 with upgraded cam, full roller setup, ported mpi intake, computer tune, and exhaust. So it's not to radical but still makes good power. If you looked at the motor you would never know that any of that stuff was done until A. you start it or B, you take the oil fill cap off and look in and see the gold rockers or C, tear it down. I just figured if I went with the carb setup it would be a little more self explanatory, easier to trouble shoot and tune. The motor has under 180 hrs on it since the rebuild but while the motor is out i am going to do a leak down test and probably send the heads out to be checked just for a peace of mind sortta thing. Either way when the time comes I will sell a turn key reliable boat.
I understand where you are coming from with regards to stock power, however I don't have stock power so I can only work with what I have. My current power is a 509 with upgraded cam, full roller setup, ported mpi intake, computer tune, and exhaust. So it's not to radical but still makes good power. If you looked at the motor you would never know that any of that stuff was done until A. you start it or B, you take the oil fill cap off and look in and see the gold rockers or C, tear it down. I just figured if I went with the carb setup it would be a little more self explanatory, easier to trouble shoot and tune. The motor has under 180 hrs on it since the rebuild but while the motor is out i am going to do a leak down test and probably send the heads out to be checked just for a peace of mind sortta thing. Either way when the time comes I will sell a turn key reliable boat.




