Melted battery terminal!
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Melted battery terminal!

  1. #1
    Senior Member JetBoatCop's Avatar
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    Default Melted battery terminal!

    I have some pics of what happened. I hook my fully charged battery up to the terminals and started cranking on the engine. It never started because this is the first time in about 4 months that I've turned it over, so it had no fuel in the carb. I looked back and saw smoke coming from the battery cables. I got so hot, that it melted the lead on the battery, seized the wing nut on the post, and the post pulled right out of the battery. Now am I using to thin of wire, or is there something wrong with the starter? The only thing that I have have power going to is the coil and the starter. Any suggestions? Thanks

    Eric
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    '78 Taylor SS 460 BBF, Under Construction
    '03 Glastron SF 185 18', 4.3 Volvo Penta
    '95 Dodge Cummins 3500 4x4 Single Cab, Dually, Triple Gauges, and some pump work!

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  3. #2
    The Man cordog009's Avatar
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    Interesting..that same thing had happened to the battery on my boat when I got it. It started fine so I didn't think too much about it until now. My battery looked identical to yours, same positive terminal too.


    1984 Youngblood TX-19 SOLD

  4. #3
    Senior Member LuckyDaze's Avatar
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    Sound like that starter has got one hell of a draw. Take it in and have it load tested to see how many amps its drawing to crank over.

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    Senior Member JetBoatCop's Avatar
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    If it's drawing to much, I'm guessing it's time for a new one huh? So yall think the cable I'm using is ok? Thanks for the quick replys.
    '78 Taylor SS 460 BBF, Under Construction
    '03 Glastron SF 185 18', 4.3 Volvo Penta
    '95 Dodge Cummins 3500 4x4 Single Cab, Dually, Triple Gauges, and some pump work!

  7. #5
    Living in a cage of fear thatguy's Avatar
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    Short in starter, or direct short on positive cable.
    Tommy
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  8. #6
    I'm No Expert Shaun's Avatar
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    My buddys neg term gets so hot it smokes and will burn the you when he tries to crank it. He replaced the started and same thing. His boat has two batterys and two neg wires. I moved his neg wire off the engine mounts and onto the bolt that goesnt into the starter (ford). It helped but it still does it. I think his problem is that his boat is a pile, the back has greese and oil everywhere and i think he's just not making a good connection. Stock ford and it turns over shitter than my mild 468... and i only run one battery. He got over doing anything with it because he bought 23' boat... now he's trying to sell that to go to a 26' ...
    Last edited by Shaun; 01-18-2009 at 02:46 PM.

  9. #7
    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Starter should draw normally under 250 amps. Much more, it needs new bearings.

    Run nothing smaller than 6-gauge wire, 2-gauge would be much better, any of the "ought" sizes (1/0, 2/0) are overkill, but, won't hurt anything.

    Shaun, I suspect you are correct about your bud's boat. Connections need to be clean, adn not greasy.
    There are some conductive substances you CAN put IN the connections, to assist corrosion-proofing, and covering a tight connection in grease will do no harm (old anti-corrosion trick). Grease and crud between the metal parts, is not good.

    He may well have a bad starter as well.
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  10. #8
    Senior Member SkyHarborCowboy's Avatar
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    More then likely a bad connection at the post or a short in the starter but I am leaning towards bad connection, as the battery connection has more surface area then the cable itself at any point and would more likely burn out at the cable then at the connection if it were a short in the starter.

    Joe
    Thanks,

    Joe
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    Senior Member H20MOFO's Avatar
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    Btw how far away is is too far for a battery ? for example my pos cable is 72".. The ground is shorter........ I'm thinking when he changes his starter, the problem will be gone(well maybe a battery too).
    Another Hot Boat refugee

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    The Man cordog009's Avatar
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    Quote Originally Posted by H20MOFO View Post
    Btw how far away is is too far for a battery ? for example my pos cable is 72".. The ground is shorter........ I'm thinking when he changes his starter, the problem will be gone(well maybe a battery too).
    Alot of drag racers put the battery in the trunk for better weight distribution, so as long as the cables are big enough, I don't see distance being a problem.


    1984 Youngblood TX-19 SOLD

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    Loose connections at the post will cause this also...

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    Now you have a good excuse to take that battery back to Walmart and get a dry cell!

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    Jetboatcop
    I had an Olds in my Cp with a lot of compression, it would eat the bushing in the front of the starter. I also had VW dune Buggy that did the same thing. It makes the starter work harder because the inside coil may be hitting the outside magnetic field (forgot the names) and binding.
    This could cause the starter to draw more current and the longer you crank it the hotter the battery terminal gets and it also cranks slower. If I remember correctly you can buy the bushings at a regular Auto parts store and a brush kit etc.
    Good luck

  16. #14
    Senior Member GT Jets's Avatar
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    Loose connection and lose the .89c cable...those cable connections blow big time....I would recommend, if you're on a budget, go to a welding supply house and buy a copper welding cable lug and solder it onto the cable, also use hex nuts to put it onto the battery and keep them tight...

    I have had more than a fair share of the Kragen special battery cables take a poo...They make an inexpensive hammer blow type cable crimper for those lugs too (cost about $25) I always use 1/0 cable or larger...

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