Does getting an e-fan make a difference?
Champion
Joined: Aug 2010
Posts: 2,697
Likes: 3
From: Cape Carteret NC
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..
Legend
Joined: Jun 2009
Posts: 8,025
Likes: 72
From: orangeville ontario
maybe down there in Florida that is how it is but up here were it get freezing cold i bet my engine warm up a lot quicker when they are not having ice cold air blown at them all the time.
Rookie
Joined: Dec 2012
Posts: 52
Likes: 0
From: Damascus, Oregon
I have had nights like that.....
I just don't remeber them!
Veteran
Joined: Jun 2012
Posts: 400
Likes: 0
From: Woodbury Tn
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
Administrator
Joined: Jul 2007
Posts: 24,686
Likes: 21
From: South Georgia/East Florida
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...
Champion
Joined: Aug 2007
Posts: 4,702
Likes: 2
From: N. Florida
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.
I do however enjoy a good technical discussion, and spell check is an amazing thing
Thread Starter
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Registered User
Joined: Oct 2012
Posts: 19
Likes: 0
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...