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post #1 of 5 Old 01-21-2006, 11:04 PM Thread Starter
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Another Alternator Question

I have an '89 LX 5.0 that is used solely for Autocross and Track Days. The car has no radio, I do not use any power accessories, it has an AC delete kit and will not be run at night if I can help it (so no headlights used). It has an OEM type alternator, a battery relocation kit with good wiring and a random battery.* Anyway, I am wondering if I need to go with the larger PA 3G alternator if I am going to install a Ford 3.8 liter electric fan assembly (with the proper sized relay of course). I am on a limited budget to say the least and there are many other performance parts that this money could go towards.

Anybody?


*(I had an Optima Red-Top, but it went dead and when I went to get it charged back up, the guy said he had many Red-Top's returned that were completely dead and wouldn't take a charge. He also had no Red-Top's in stock to replace it because they were back-ordered so bad.)


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post #2 of 5 Old 01-22-2006, 08:54 AM
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If the alternator that you already have is good I'd keep it.If the battery just can't get charged during the drive to and from the racetrack,a bigger alt will just quicken it's demise.Overcharging a dattery will cause it to overheat internally and warp the plates.This causes it to short out inside and kills it right then.
If the battery needs help starting the engine you could try one of those "jump start kits" that are just a battery inside of a carrying case that recharges by plugging it into an electrical outlet.


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post #3 of 5 Old 01-22-2006, 09:01 AM
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Based on the limited use the car has, I agree with Chopper1...the OEM alternator and a good red-top would do. GL

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post #4 of 5 Old 01-22-2006, 12:14 PM
 
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Although the Red Top's that were bad could have been a defective batch, the most common reason is:

The batteries were most likely POORLY MAINTAINED. Most, (not all), lead acid batteries cannot be allowed to be stored unattended.

Batteries in stored/idle vehicles must be charged AT LEAST once a month with an automatic portable charger at no less than 3 amps and NOT THE VEHICLES ALTERNATOR/GENERATOR. A batt that is allowed to discharge below 12.40V for an extended period will suffer from cell plate sulfication. Recharging may not restore the battery/cells to usable condition.

Each year 1,600,000 alternators and starters are replaced, and returned to the supplier, as not solving the problem, and then finding later it was the battery that was defective.

In short: ALWAYS charge the battery in a stored vehicle with a portable charger BEFORE starting/driving it.


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post #5 of 5 Old 01-22-2006, 10:30 PM Thread Starter
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Thanks for the feedback and the info on battery maintenance. I will take all of your advice.
I'll call you guys if I need a jump, ok?
-LC

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