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    #1

    Water in battery box

    I decided to put in a lightweight drycell motorcycle battery into my 318IS. When I removed the battery and the tray, I found a huge pool of water in the battery box. My questions are, where to these tubes go, and what does the large portion of that flap do?



    - Todd
    San Diego BMW repair -> Jake @ www.littlecarshop.com Great guy :up:
    Tags: None
    #2
    the tubes go to the battery AFAIK, and I bet you need new tail light gaskets
    BEERTECH

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      #3
      The tubes are vent tubes for gases that build up in the battery, and that big flap is the trunk vent.

      "See, we're adding a little something to this month's sales contest. As you all know, first prize is a Cadillac Eldorado. Anyone wanna see second prize? Second prize is a set of steak knives. Third prize is you're fired."

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        #4
        There is a large tube that runs into that Vent, make sure it is connected and dosn't leak. Pour a glass of watter down besides the sunroof with it open and see if you can spot the link,
        85 325e 2.7 ITB'd stroker

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          #5
          Thanks for the input. The large tube seems to be well connected to the side trunk vent, so I'll take off the rear lights and check the seals. So both of those tubes are for the battery, including the long white one?
          San Diego BMW repair -> Jake @ www.littlecarshop.com Great guy :up:

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            #6
            Update:

            It turns out I had no nuts holding in my passenger lense cluster to the body of the car! The only way it was held in was through the light cluster inside the trunk. Now that I tightened the whole lense cluster w/ the nuts, I'm using the seals as they were intended :roll:

            Here's a pic of the finished product. If I need to, I'll wrap a zip-tie around the whole battery and the sheet metal on the left side of the battery box to add in lateral support. In with the 15lb battery and out with the ~40lb :D

            - Todd

            San Diego BMW repair -> Jake @ www.littlecarshop.com Great guy :up:

            Comment

              #7
              Will that small ass battery reliably crank the car? Just curious...

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                #8
                What are you looking to benefit from running that small of a battery? Seriously... it's going to leave you stranded that one day your car won't start, or during the winter when it's nice and cold outside.

                What's w/guys and trying to take all the weight out of the ass end of their cars, anyway? BMW put that battery there for a reason... weight distribution.

                "See, we're adding a little something to this month's sales contest. As you all know, first prize is a Cadillac Eldorado. Anyone wanna see second prize? Second prize is a set of steak knives. Third prize is you're fired."

                Comment

                  #9
                  I've used this battery on my TI for almost a year, and I've yet to be stranded. It also reliabily cranks over the engine, time and time again. Pound for pound, the new dry cell design is more efficient in terms of cold cranking amps. I live in SoCal, so I don't have to worry about cold winters. Until I get an accurate corner weighting, I don't know where my weight distribution will be, but I can tell you that with a small 4 cylinder up front and a spare in the back, I should be fine. ;)

                  - Todd

                  P.S. This particular model is designed for Automotive and Marine applications.
                  San Diego BMW repair -> Jake @ www.littlecarshop.com Great guy :up:

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