Stock Dual Fan CFM Ratings?
04-13-2004, 11:02 PM
#3
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this was one of the first questions i asked when i came to these boards... and one that will never get answered with any facts. (there are estimates, which are probably pretty close, but there is no known documentation from GM. im sure there is an engineer somewhere out there who could easily solve this for us)
and i believe f-crazy meant 1000 cfm each.
and i believe f-crazy meant 1000 cfm each.
04-14-2004, 06:32 PM
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Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
Originally posted by breathment
this was one of the first questions i asked when i came to these boards... and one that will never get answered with any facts. (there are estimates, which are probably pretty close, but there is no known documentation from GM. im sure there is an engineer somewhere out there who could easily solve this for us)
and i believe f-crazy meant 1000 cfm each.
this was one of the first questions i asked when i came to these boards... and one that will never get answered with any facts. (there are estimates, which are probably pretty close, but there is no known documentation from GM. im sure there is an engineer somewhere out there who could easily solve this for us)
and i believe f-crazy meant 1000 cfm each.
Actually i think its 1000 total....
04-14-2004, 06:46 PM
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Well, my car is overheating in city traffic, but cools and maintains 160-170* temps when I am above 40 mph. Everything is working as normal, fans are on all the time. (AC has to be on, since I dont seem to have a wire to my computer for the cooling fans. That is getting fixed with a painless setup when I buy new fans.)
I am going to get the flexalite dual electrics. 2500 cfms at 19.8 amps. No more overheat problems. I also am going to get a transmission cooler, so the fans have to cool that too.
I think the fans might be too much for what I need them for, but at this point, its going to get 100+ in the summer here in florida, and I need this to work. Not to mention I have AC.
I am going to get the flexalite dual electrics. 2500 cfms at 19.8 amps. No more overheat problems. I also am going to get a transmission cooler, so the fans have to cool that too.
I think the fans might be too much for what I need them for, but at this point, its going to get 100+ in the summer here in florida, and I need this to work. Not to mention I have AC.
04-15-2004, 01:09 AM
#6
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Originally posted by f-crazy
Actually i think its 1000 total....
Actually i think its 1000 total....
04-16-2004, 09:12 AM
#7
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1000? 
That sucks. Mine cools at 195 degrees just fine (and thats with it running at 60 percent). Iv watched it up close here in out 85 degree weather lately. The fans come on at 195 at 60 percent speed for about 3 mins. Then it circulates again, and rev up to 100 percent. One more circulation, and the fans stay about a constant 60 percent for the remaining of the time.
1000cfm doesnt seem much, but its just perfect for my car apparently,
On my truck, though, I have flex 250 fans that flow about 5200cfm at 100 percent. Even then, it still has somewhat of a hard time keeping cool.
That sucks. Mine cools at 195 degrees just fine (and thats with it running at 60 percent). Iv watched it up close here in out 85 degree weather lately. The fans come on at 195 at 60 percent speed for about 3 mins. Then it circulates again, and rev up to 100 percent. One more circulation, and the fans stay about a constant 60 percent for the remaining of the time.
1000cfm doesnt seem much, but its just perfect for my car apparently,
On my truck, though, I have flex 250 fans that flow about 5200cfm at 100 percent. Even then, it still has somewhat of a hard time keeping cool.
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04-16-2004, 09:49 PM
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Car: 1987 Camaro Z28 IROC-Z
Engine: 5.7L TPI
Transmission: T5
Axle/Gears: 3.42:1
The stock fan setup stinks. There is no real shroud, so there is nothing to direct or channel the air. What a mess. 
04-16-2004, 09:53 PM
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You'll laugh at what I did today.
I idled it for awhile. I put one of my floor fans (a industrial one, like, 300+cfms) in front of my air dam. Ran for about 45 minutes with no trouble. Turned off the fan, and it started to slowly creep up. Turn the fan back on, cooled back off. Idled it to 2000 with the fans there, and it still heated up more, (although slower) but I think that should be expected. Being that the car isnt getting any additionally air from the atmosphere and the car moving.
What does this all mean? I donno, its late and I am going to bed. I'll think about it tommorow.
I idled it for awhile. I put one of my floor fans (a industrial one, like, 300+cfms) in front of my air dam. Ran for about 45 minutes with no trouble. Turned off the fan, and it started to slowly creep up. Turn the fan back on, cooled back off. Idled it to 2000 with the fans there, and it still heated up more, (although slower) but I think that should be expected. Being that the car isnt getting any additionally air from the atmosphere and the car moving.
What does this all mean? I donno, its late and I am going to bed. I'll think about it tommorow.
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