So before we get into specifics, I'm still a little confused on the basic concept here. It seems to be "common knowledge" that switching from a regular fan to an e-fan nets you 5-10% more HP and fuel economy. Which is pretty significant. BUT...
So a fan thats connected to the motor gets spun directly by the motor. But to spin an e-fan, you have to turn some of that engine power into electricity, then turn that electricity back into movement. So logically, e-fan's should be noticeably LESS efficient than direct drive fans, because neither alternators new electric motors are 100% efficient.
So where does the power gain come from?
Then on to more specific questions, I've read not so great things, including just the other day, about using efans in these trucks. What's the story there? And like always, does general information that mostly comes from 4.2 land apply to my 5.3? Even if the gain was just at the low end, 5% more HP and 5% better fuel economy, that's still pretty good.
So a fan thats connected to the motor gets spun directly by the motor. But to spin an e-fan, you have to turn some of that engine power into electricity, then turn that electricity back into movement. So logically, e-fan's should be noticeably LESS efficient than direct drive fans, because neither alternators new electric motors are 100% efficient.
So where does the power gain come from?
Then on to more specific questions, I've read not so great things, including just the other day, about using efans in these trucks. What's the story there? And like always, does general information that mostly comes from 4.2 land apply to my 5.3? Even if the gain was just at the low end, 5% more HP and 5% better fuel economy, that's still pretty good.