[Steve C.]

Cooling Fan Shoot-Out! - Engine Masters Ep. 20

https://www.youtube.com/watch?v=ZXdLgaFXZzs

Keep in mind the tid bit I posted in the link in post #7. From the Car Craft testing article.....

There is no common industry standard for rating electric fans. Most companies use a cfm rating, often expressed in free-flow and not when placed behind a radiator. You can never know for certain about different cfm ratings or how a company has rated their fan since they can be tested by different criteria and methods. In comparison between brands using cfm ratings alone is difficult, typically not apples-to-apples.


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[Steve C.]

Regarding the alternator....

"Its pretty minimal. You can calculate it by knowing that 1 HP = 750 Watts. So for example, let's say that you are changing from a 60 amp alternator to a 200 amp alternator. That is a difference of 140 amps. Let's also assume your charging system is putting out 14 volts. Power in watts is equal to current (amps) multiplied by voltage. So, 140 amps X 14V = 1960 watts. 1960 divided by 750 is 2.61 HP. If your alternator is only 50% efficient, that's about a 5 HP difference. And the alternator is probably a lot more efficient than 50%. Plus, your 200 amp alternator is not putting out 200 amps all the time, it is only delivering that amperage when it is required."

Source if interested:

http://fepower.net/simplemachinesfor...&topic=4879.15



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