Does getting an e-fan make a difference?
#11
the help an efan provides in terms of performance are well below the RPM's most dynos are going to rate, unless that is altered.. the 'off the line' help is absolutely there, though..
there is zero help at highway speeds.. the clutch most often disengages pulley fans, and the wind over the heat exchange is good enough to cool the engine..
you'll reap the benefits of an efan mostly in city driving, and right off the line, where the heavy clutch fan isn't sapping energy at it's source: the crank..
something to figure into the mathematical equation is rotational weight.. rotational weight is generally times four, but it doesn't work out exactly that way.. to rotate the clutch fan, though, is tough on an engine that doesn't produce enough power down low in the RPM's to not miss it..
there is zero help at highway speeds.. the clutch most often disengages pulley fans, and the wind over the heat exchange is good enough to cool the engine..
you'll reap the benefits of an efan mostly in city driving, and right off the line, where the heavy clutch fan isn't sapping energy at it's source: the crank..
something to figure into the mathematical equation is rotational weight.. rotational weight is generally times four, but it doesn't work out exactly that way.. to rotate the clutch fan, though, is tough on an engine that doesn't produce enough power down low in the RPM's to not miss it..
#12
#13
#14
For you to not remember it, I think you did an outstanding job with your analysis. It made a lot of sense to us non buzzed members...lol
#15
Join Date: Jul 2007
Location: South Georgia/East Florida
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19 Posts
So it obviously helped you out but I'm thinking about it for 20-30 miles highway driving everyday if its not gonna help me in gas mileage than I don't think it's worth it for my situation, I live in south Florida and it gets pretty damn hot but I'm not really worried about that
IMO you'd be wasting your money on an e-fan. Since your ride is pretty much at highway speed you won't see a benefit.
You'd be much better served using the money replacing your insanely restrictive Flowmaster muffler with one that has a decent CFM rate and free up that exhaust...
#17
Yes, it'll take longer for your engine to reach 200 from -20 than mine will from +30, but the degrees per minute will be the same.
#18
I do however enjoy a good technical discussion, and spell check is an amazing thing
#19
IMO you'd be wasting your money on an e-fan. Since your ride is pretty much at highway speed you won't see a benefit.
You'd be much better served using the money replacing your insanely restrictive Flowmaster muffler with one that has a decent CFM rate and free up that exhaust...
You'd be much better served using the money replacing your insanely restrictive Flowmaster muffler with one that has a decent CFM rate and free up that exhaust...