Electric or mech fan?

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pishta said:
IIRC the pushers "get in the way" under speed. Probably would do better without it.
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If it takes too long for it the temps to come down out on the hi way , it might be blocking the airflow , I have a 14'' pusher , mounted as far in front of the rad. as I can on mine/comes on at 220 , 'hasnt come on this summer'' . I also bought an 18''/7 blade fan to replace the 17''/6 blade on it now . I had to make a jig of sorts to trim the 18 to 17 3/4 for fitment purposes , but havent tried it yet. Most of the info I posted came from a couple of guys here on fabo , it took all of it to make my rig work , and I`m sure urs will be putting out more h.p. and heat than mine ---------.
Looks like u have about the same room as mine , on the pump clearance, 440`s and hemi`s are the same length as far as I know , I have about 1/2'' clearance to my 28x19 crossflow rad. if I remember right its around 3'' thick .
Keep us informed on that hemi , AINT NOTHIN FINER !
 
j par said:
Yes but there's only one Abby's Pizza on Stark... So it wasn't to hard to find was it?.... LOL...
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That's what google is for isn't it? I used to work out there. Trained at the fire station @ 192nd and Halsey and then 4 years later was back and worked a training cycle. Guess I didn't do well enough the first time.
 
famous bob said:
If it takes too long for it the temps to come down out on the hi way , it might be blocking the airflow , I have a 14'' pusher , mounted as far in front of the rad. as I can on mine/comes on at 220 , 'hasnt come on this summer'' . I also bought an 18''/7 blade fan to replace the 17''/6 blade on it now . I had to make a jig of sorts to trim the 18 to 17 3/4 for fitment purposes , but havent tried it yet. Most of the info I posted came from a couple of guys here on fabo , it took all of it to make my rig work , and I`m sure urs will be putting out more h.p. and heat than mine ---------.
Looks like u have about the same room as mine , on the pump clearance, 440`s and hemi`s are the same length as far as I know , I have about 1/2'' clearance to my 28x19 crossflow rad. if I remember right its around 3'' thick .
Keep us informed on that hemi , AINT NOTHIN FINER !
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I’m going with an 18” 6-blade mech fan because I could get one this week. I’d like to get the 7-blade version, but do you know if that 7-blade really pulls that much more air? Is it worth changing to it over the winter (Ex.)?
 
Velocity111 said:
I’m going with an 18” 6-blade mech fan because I could get one this week. I’d like to get the 7-blade version, but do you know if that 7-blade really pulls that much more air? Is it worth changing to it over the winter (Ex.)?
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Yes the seven blade moves considerable more air.
To make room for the seventh blade they also have a deeper pitch.
Go direct drive the clutches dont really work that well
 
Velocity111 said:
I’m going with an 18” 6-blade mech fan because I could get one this week. I’d like to get the 7-blade version, but do you know if that 7-blade really pulls that much more air? Is it worth changing to it over the winter (Ex.)?
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I have been wondering the same thing about the 6 versus 7 blade deal, finally got a decent one to try if I need to.
The full belt driven mech fan is about 8ish degrees better on my rig, as I said earlier , but I `m trying to get this thing to run like I think it should---guess I`m remembering the old hemi car too much !--------lol
 
Velocity111 said:
Ok...7 blade it is!!
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Be prepared for more fan noise without a clutch.
But the benefits are more air for cooling and more distance from the radiator for proper spacing in the shroud.
I dont believe you will miss a few HP.
 
512Stroker said:
Be prepared for more fan noise without a clutch.
But the benefits are more air for cooling and more distance from the radiator for proper spacing in the shroud.
I dont believe you will miss a few HP.
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^^^^^^^^^^^^^^^^^^^^^^

LOL , thats what I thot !
 
512Stroker said:
Be prepared for more fan noise without a clutch.
But the benefits are more air for cooling and more distance from the radiator for proper spacing in the shroud.
I dont believe you will miss a few HP.
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I can't believe the noise level would be greater than the motor, or at a level as to become a nuisance? Not worried about Hp, this is a cruz night car anyways, with the motor detuned down to 740hp for streetability I can afford to lose a couple..lol.

My biggest concern right now is cooling. Having spent three years building this car, and being done with the build for the last two months, I still haven't really had a good first problem free drive with the car due to heating issues. I'm in the process of switching the pulleys/belts to create as much room as possible for a puller fan - mech now in this case. This is the one issue I've had - no room between the water pump and the radiator. The only thing I care about now it the ability to cool, and if that means putting up with some noise then for now I'm fine with that. I'll know next week if I have this addressed, and confidence is pretty high that this new set up will work, but you never know until you know.
 
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