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Old 05-03-2012, 03:51 PM
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highrisk highrisk is offline
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Join Date: Mar 2004
Location: Jackson, MO
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George,

I just got off the line with the tech guy at PowerMaster and this is what I found out. The 7294 series is their 12SI that are designed to look stock. The 7295 is the 12SI with a smooth look, more modern looking. The basic 7294 is rated at 100 amps at full RPM, he said more like 105, and at idle is 70 amps. They consider idle as 2400 RPM alternator speed so if you are running stock crank pulley he said it would be around 800-1000 engine RPM, depending on crank pulley size. The 47294 is their 140 amp 12SI which is rated at 80 amps at idle. He said these actually test out between 80 to 95 amps and the 80 is a low side figure. He also recommended an 8ga wire ran directly to the battery from the alternator. He really recommended the 140 amp because the cost is not that much more and it gives a lot of room for added electrical devices. He also said they have considered phasing out the 100 amp version because the 140 amp is so much more popular. So do you think the 100 amp or the 140 amp would be a better choice?

So here is another question. If I run an 8ga wire directly to the battery can you leave the stock wire from the wiring harness connected to the alternator and starter? The guy from M&H actually recommended leaving the original hooked up and to run an 8ga or 10ga directly to the battery.

Thanks again,
Dale

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