[judy10perez]

14 volts it is not desireable to lose any voltage as this will slow down the current flow. here

[Guillermo]

I just wanted to make sure that I understood what you were wanting to do. Yamaha uses the term isolator lead to get current to a second battery. I thought you might have been talking about that lead. Early Yamaha isolator leads do not have circuit protection (fuse or circuit breaker). You will need to add at least one to the Yamaha isolator lead for an SX motor. more

[tehlaser]

If your not carefull you'll learn something everyday.

[E-conomictest]

The isolator device for the most part has been replaced by a device known as an automatic charge relay (ACR), voltage sensitive relay (VSR) or combiner. When ever the engine is producing certain voltage the device will automatically parallel two or more batteries so that each will be charge while the motor is running. Stop the motor and the device disconnects the start battery from the other battery(s).

[BookLover]

The electronic device known as an isolator has an inherent deficiency insofar as it uses diodes which result in voltage drop. When starting with 12 more

[CoinMan]

– Other underwater usages, especially on sailboats that lack power. (generally smaller vessels) here

[nsamiramcmillanw]

As this is something we already discussed, we won’t get into details again. Just remember that when shopping for a Deep Cycle Marine Battery the two most essential battery ratings are reserve capacity and ampere-hour rating.

[eedcvfrr]

The Bluetop Optima 8016 has a dual purpose, meaning it serves both deep cycle application and the starting application. It is maintenance-free and works well even in harsh weather. The unique spiral-cell technology ensures not only clean power source but also efficiency, high output and long running time. Moreover, it is 15 times more resistant to vibration making it extra durable.

[mpkomara]

When it comes to marine supplies and appliances you surely have a variety of options available on the market. Finding a suitable marine battery, however, may become a difficulty as they are many products to choose from but also many unreliable units. For this, it is necessary to know what to look for, and luckily for you, we have gathered all pieces of information you need in one place. more

[lancommy101]

Now we all know that weight is a byproduct of how large the battery is. However, it is still something you need to consider because if you want, for example, to minimize weight for efficiency and speed, you will have to get a single battery, and not one of the Absorbed Glass Mat kind.

[Zerbie]

So here is the rear casting deck pics! I wanted to be able to see the battery and connections while lit up, mission accomplished. more

[andy]

Thanks OH- i believe i do have everything i need for the hookup. Maybe i will get that done too, and i can ask the tech when i go to prop it what else i'll need for it. I'm sure he would know. Thank you for taking the time to write all that out- very good reference material.

[jemenake]

However, i did manage to get not only some work done on the boat, but also splashed yesterday for about 6 hours! It has some kind of leak somewhere, but it is not substantial and the bilge worked great to eradicate the problem, i noticed i got some primer in the drain tube when i installed the new plug, wonder if it could be from there. Good news is i am rarely on the water for more than a day, so it's not a huge problem. Question- the bilge worked great when my battery voltage was at 13.7-14v, but then we trolled at 550 rpm, leading to 12-12.4v and the bilge did not work as well, really struggled. Do they require the whole 13.7v to operate at peak power? I apologize for the length of this post but it may be helpful for someone else. pics at the end! That is 9 mile power plant in the background- launched at mexico point for all that are wondering. Tow vehicle is a 2010 jeep grand cherokee with the 3.7l engine, 3500# rating. [links]

[sunny256]

Ron- Thanks for the complement. The reason i put the tank there is twofold- first that my boat is a '69 with a hp rating of 125, and a '69 2 stroke is (estimating) probably about 100# less than my merc 90, so i wanted to move as much weight forward as possible. I also have one battery up front too. The second reason is my needs. Primary purpose of this boat is to land fish, so everything i do is to make it a better fishing machine. I troll mostly, so if we catch a fish, two guys (potentially 3) will be on the rear casting deck of the boat when we land our fish. So that's 2-3 guys, one battery, 4 stroke motor- i did not like the thought of adding a fuel tank back there as well. here

[Saul]

The specs for this engine are the same as the 4.3L/V-6 except that this engine provides 15 additional horsepower (205 vs 190). [links]

[Anon136]

This model has only three differences distinguishing it from the 4.3L/V-6. The engine produces 210 horse power (instead of 190), and requires the use of a battery with 550 CCA (vs. 375 on the 4.3L/V-6). This model also offers electronic fuel injection (EFI) instead of carburetion.

[britschler]

This engine is a 4-cycle, gasoline-powered V-6 engine with 262 cubic inches (4.3 liters) of displacement. Fuel is delivered via a carburetor. The engine provides 190 horse power to the propeller shaft at a maximum RPM (revolutions per minute) of 4,800. The electrical system is a 12-volt negative-ground system with a 72-amp alternator. Mercury Marine recommends a battery producing 375 cold-cranking amps (CCA) of power.

[nephishe]

The MerCruiser 4.3L is a boat engine manufactured by Mercury Marine. There are several models of this engine: the 4.3L V-6, the 4.3 LH V-6, the 4.3L EFI V-6, and the 4.3 V-6 MPI. They share many similarities. The differences are primarily in the power output of the engines.

[jaymac407]

This model provides 220 horse power, and is therefore the most powerful of the 4.3L lineup. This is achieved by means of its Multi-Point Electronic Fuel Injection. Otherwise, the specs are the same as those of the 4.3L EFI/V-6.