j par
Well-hung Member
A picture would be nice?
Not too happy with my fans.....
- Thread starter MrJLR
- Start date
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Is your electrical system up to the task of running the fans? I’m running the contour fans and on hi they’ll stick paper to the grill, but I’ve gotta step my charging system up due to it being more than it can keep up with.
j par
Well-hung Member
Lol, sticking paper to the grill that's a good one..
Edit: is that like having a lumpy cam? LOL
lilfontleroy
annoyinglilLeroy
paper on grill
did a search thinking I would find a BBQ grill with some burning paper on it, but no
mopardude318
Well-Known Member
I dunno Mr. I think it's hard for an electric fan to produce the same amount of air flow as a mechanical clutch fan like the MP viscous unit.
If you have the fan on right, big enough wires, big enough radiator, high enough stall converter, right idle speed, right thermostat, and triple checked the timing and idle/vacuum advance aren't pulling it too far.... It's simply time for a bigger fan.
j par
Well-hung Member
You're cracking me up totally! yet another lumpy cam analogy.
mopardude318
Well-Known Member
Hey I like my lumps. Back off.
lilfontleroy
annoyinglilLeroy
that's what she said
j par
Well-hung Member
You see a major difference in a fan ran by a belt as compared to one ran by an electric motor?
yep, the amount of air flow.....
Hey, why don't you go open the hood on your newly purchased Ram. Let me know if it has an electric fan or a belt driven fan. After you discover "what drives" your fan, I'll let you guess why
When things need to be cooled because they may have to work, even in todays electric world they are still belt driving fans
mopardude318
Well-Known Member
Yep. Take a look at industrial Diesel engines, or any big rig on the road. Or even my brand new 70 horse Kubota tractor. Mechanical fan ;)yep, the amount of air flow.....
Hey, why don't you go open the hood on your newly purchased Ram. Let me know if it has an electric fan or a belt driven fan. After you discover "what drives" your fan, I'll let you guess why
When things need to be cooled because they may have to work, even in todays electric world they are still belt driving fans
lilfontleroy
annoyinglilLeroy
nix the toggle switch - aux electric fan(s) with thermostatic control in support of OEM type setup
The only reason new cars have electric fans is for gas mileage? You mentioned a one core radiator. That might be ok when its brand new, but an old one may be a little restrictive.
Super-Cuda
MOPAR .. Move Over, Plymouth Approaching Rapidly!
Hoping to learn something here..
I always thought that electric fans always run at the same speed and the blades do not change pitch. With mechanical belt driven fans , the fan blade pitch changes with speed and if equipped with the viscous clutch it actually cuts out when the fan is no longer effective.
Looking forward to any comments.
I always thought that electric fans always run at the same speed and the blades do not change pitch. With mechanical belt driven fans , the fan blade pitch changes with speed and if equipped with the viscous clutch it actually cuts out when the fan is no longer effective.
Looking forward to any comments.
Sorry I missed that you now have a new 2 core radiator.
j par
Well-hung Member
Still a stale comparison. Please don't insinuate that I didn't know I was purchasing a truck with a mechanical fan let alone didn't know I had one.yep, the amount of air flow.....
Hey, why don't you go open the hood on your newly purchased Ram. Let me know if it has an electric fan or a belt driven fan. After you discover "what drives" your fan, I'll let you guess why
When things need to be cooled because they may have to work, even in todays electric world they are still belt driving fans
You know when I had my little 318 in the duster when I first got it I would run one of those little squirrel cage Motors that would run the water pump and a little plastic fan and that seemed to work just fine.
Honestly I could go either way and it wouldn't even matter. I personally like my electric fans as I've gotten used to not having as I like to call it "the whirling blade of death" in my face and near my hands. And again this is for my duster, my toy car that I like to play with. For my daily drivers I would want them to be stock just as I got them. I can only imagine the manufacturers put them in there for a multitude of reasons and I'm sure most of which have to do with ease of installation and cost.
j par
Well-hung Member
I know it's quite possible for an electric fan to have different speeds as the one in my living room facing me right now has three different speeds with only one plug-in. There's no paretic drag on the motor at all ever with an electric motor driven fan. And they too should just turn on when you need them and turn off when you don't.
j par
Well-hung Member
My fans came from a member. Their "stock" fans out of a motorhome that had a 440.
Looks really nice. You did a great job there.
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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I run a minimum water temp of 205, and a maximum of IDK, 207. Yeah the gauge works.
The mechanical fan, on a clutch, mostly only works at low vehicle speeds, so who cares how much power it sucks, you are at part throttle! You're first priority should be to ensure your engine doesn't self-destruct, not to worry about a couple of,or few, horsepower. Oh but on HotRod tv..... yadayada, who puts on a direct drive fan and spins it to 6500, with the vehicle at rest? Who?
Here's a realworld test. Install your 7 blade fan and thermostatically controlled clutch. Now run the engine up to 1300 with the fast idle cam, and watch your tach while waiting for the clutch to cycle on. And wait and wait; listen here it comes, quick watch the tach. What?! The engine didn't stall? How can that be, the fan sucks mega power.Everybody knows that. What 1300 isn't fast enough? What's your rpm in drive at 30mph? How much power does it take to maintain 30 mph? How many people, back in the carburated hey-day, ever complained about their engine stalling when the fan cycled on?
Here's the thing, it takes a clutched mechanical fan a few seconds to cool your engine down from say 210 to 200. It takes your electric fan how long to do the same job? a minute and a half, hey that's pretty good. So if it draws 20 amps and is 10% efficient, that would be 3.6hp. Say what? You got two of them? Well that would be 7.2hp then. So how does 7.2hp for a minute and a half, compare to 30 seconds and 7.2hp for the mechanical. IDK either, but I think the mechanical fan is winning, by a ratio of 1 to 3,lol.
Disclaimer; obviously I am pro,mechanical-fan, and after 45 years or more of trouble-free motoring, that stands to reason. And so I biased the conversation and the tests in my favor. If your car burns the tires thru first and maybe second gear, why would you care how; wait am I in the racers forum? No? ok- then; why would you care about 5 or 7 or even 30 horsepower going to a mechanical fan? No1 you have a preponderance of power anyway; no2 the fan only runs for a few seconds atta time; and no3 after 30/35 mph the fan may not be moving any air at all! cuz the car-in-motion is now ramming air thru the rad and the fan is freewheeling.
And finally
How do you tune a carburated engine, sucking underhood air, in which the temp is varying 30,40,50, or more degrees?
IDK either.
Oh yeah, one more thing; with a thermostically clutched fan, you don't need a 3-row rad, nor a honking big one, or one made of exotic materials. Heck it doesn't even need to be new. I just slapped what I had, in there in 1999,and she's still going strong despite being a 45 year old 318 A/C rad.
I tell you one thing, I'd never willingly install an electric fan on my engine(s).
Your results may vary.
Yeah I know I sound like a dick, sorry,lol.
The mechanical fan, on a clutch, mostly only works at low vehicle speeds, so who cares how much power it sucks, you are at part throttle! You're first priority should be to ensure your engine doesn't self-destruct, not to worry about a couple of,or few, horsepower. Oh but on HotRod tv..... yadayada, who puts on a direct drive fan and spins it to 6500, with the vehicle at rest? Who?
Here's a realworld test. Install your 7 blade fan and thermostatically controlled clutch. Now run the engine up to 1300 with the fast idle cam, and watch your tach while waiting for the clutch to cycle on. And wait and wait; listen here it comes, quick watch the tach. What?! The engine didn't stall? How can that be, the fan sucks mega power.Everybody knows that. What 1300 isn't fast enough? What's your rpm in drive at 30mph? How much power does it take to maintain 30 mph? How many people, back in the carburated hey-day, ever complained about their engine stalling when the fan cycled on?
Here's the thing, it takes a clutched mechanical fan a few seconds to cool your engine down from say 210 to 200. It takes your electric fan how long to do the same job? a minute and a half, hey that's pretty good. So if it draws 20 amps and is 10% efficient, that would be 3.6hp. Say what? You got two of them? Well that would be 7.2hp then. So how does 7.2hp for a minute and a half, compare to 30 seconds and 7.2hp for the mechanical. IDK either, but I think the mechanical fan is winning, by a ratio of 1 to 3,lol.
Disclaimer; obviously I am pro,mechanical-fan, and after 45 years or more of trouble-free motoring, that stands to reason. And so I biased the conversation and the tests in my favor. If your car burns the tires thru first and maybe second gear, why would you care how; wait am I in the racers forum? No? ok- then; why would you care about 5 or 7 or even 30 horsepower going to a mechanical fan? No1 you have a preponderance of power anyway; no2 the fan only runs for a few seconds atta time; and no3 after 30/35 mph the fan may not be moving any air at all! cuz the car-in-motion is now ramming air thru the rad and the fan is freewheeling.
And finally
How do you tune a carburated engine, sucking underhood air, in which the temp is varying 30,40,50, or more degrees?
IDK either.
Oh yeah, one more thing; with a thermostically clutched fan, you don't need a 3-row rad, nor a honking big one, or one made of exotic materials. Heck it doesn't even need to be new. I just slapped what I had, in there in 1999,and she's still going strong despite being a 45 year old 318 A/C rad.
I tell you one thing, I'd never willingly install an electric fan on my engine(s).
Your results may vary.
Yeah I know I sound like a dick, sorry,lol.
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