| jfarrell | -- 07-21-2010 @ 11:59 AM |
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Sometime ago I remember reading a post about how to check to make sure a 6 volt battery is properly grounded. I can't find the past post in a search but probably am not using the right subject in searching for it. I'm trying to start the car after a rebuild, but the battery seems to turn much slower than it used to. I suspect new paint is interfering with the ground. Thanks. Jim Farrell
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| supereal | -- 07-21-2010 @ 1:47 PM |
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Jim: There should be two ground straps, one from the battery post to the body of the car, and another to one of the head bolts on the engine. Be sure that they are, actually, six volt size. We also install a cable from the point where the ground strap attaches to the firewall to one of the starter motor mounting bolts. Old cars often present difficulties in finding good grounds due to grease, rust, paint, etc, many of the elctrical parts, such as lights, too. Shine up all the places, including the battery posts and cable ends, and be sure they are secure. Placing a film of anti-corrosion grease at these points is a good idea. It is sold in tubes at most places selling electrical supplies, and at home centers. If your battery is more than a couple of years old, it is probably time to replace it. Many of us use the Optima battery. It is a great battery for old cars that are lightly driven.
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| TomO | -- 07-22-2010 @ 7:41 AM |
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Search for the post about using 2 6 volt batteries in the 32 forum. Scroll down to my post to see the procedure for using a volt meter to check out the starting circuit. Tom
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| jfarrell | -- 07-22-2010 @ 11:13 AM |
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Our car has a braided positive ground cable going from the positive battery post to a head bolt. The negative cable goes to the solenoid and a cable goes from the solenoid to the starter. There is no ground strap from the battery to the body of the car, and I don't think the authenticity manual calls for one. There is a ground strap from the firewall to the back of the engine, but there is not a strap from the body to the starter. I think I will try some more grounds to see if they help. All places where cables or straps are attached were well cleaned and anti-corrosive grease was applied. Thanks for the help. Jim Farrell
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| TomO | -- 07-23-2010 @ 8:45 AM |
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Jfarrell, Adding more ground straps may not fix your problem. You could have excessive resistance in either side of the circuit. Use your volt meter to isolate the problem. If you have the correct voltage at the starter, the correct size ground straps and good connections your starter could be bad or of the wrong voltage. A 12 volt starter will turn over a worn engine fast enough to start it, but will not do the same for a fresh re-build. Tom
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