Fan Speed Controller - Chevelle Tech
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post #1 of 10 (permalink) Old May 15th, 19, 10:13 AM Thread Starter
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Mike
 
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Fan Speed Controller

Anyone have a good fan speed controller they could recommend? I don't want to listen to the fans on high once the set temp is triggered. Is there a controller out there that will gradually increase the fan speed as the engine temp gets hotter and requires more cooling?

67 Chevelle 454, M21
Gen IV 454 (out of C30 ), 390 heads 1.88/2.19 valves by Vortecpro, with ISKY Hyd Roller cam (at 050 218 int./228 exh, lift 530 int./552 exh.), RPM performer intake, Fitech 600HP, Dougs headers, and M21, Gear Vendors OD, 3.73's, UMI Suspension, Viking coilovers.
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post #2 of 10 (permalink) Old May 15th, 19, 11:03 AM
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Re: Fan Speed Controller

Friend of mine has this one on his GTO.....

https://derale.com/product-footer/el...n-probe-detail

Jeff Evans
65 Chevelle, LS3/T56 transplant in progress
67 Chevelle, ZZ502, AFR 305, Straub Solid Roller, 400 Turbo, Moser Rear 3.42 gear
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post #3 of 10 (permalink) Old May 15th, 19, 12:22 PM Thread Starter
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Mike
 
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Re: Fan Speed Controller

Quote:
Originally Posted by Jeff65SS View Post
Friend of mine has this one on his GTO.....

https://derale.com/product-footer/el...n-probe-detail
That's what Derale recommended too. Trying to find some reviews and Amazon is split 50/50 on that one

67 Chevelle 454, M21
Gen IV 454 (out of C30 ), 390 heads 1.88/2.19 valves by Vortecpro, with ISKY Hyd Roller cam (at 050 218 int./228 exh, lift 530 int./552 exh.), RPM performer intake, Fitech 600HP, Dougs headers, and M21, Gear Vendors OD, 3.73's, UMI Suspension, Viking coilovers.
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post #4 of 10 (permalink) Old May 15th, 19, 12:43 PM
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Re: Fan Speed Controller

This is the one I used. Had most of the features I wanted, and soft start.
https://www.flex-a-lite.com/accessor...re-sensor.html

_______________
1970 SS/396 5 speed
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post #5 of 10 (permalink) Old May 15th, 19, 2:43 PM
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Re: Fan Speed Controller

I have no review info for you, my friend has had good luck but not alot of runtime either.

Jeff Evans
65 Chevelle, LS3/T56 transplant in progress
67 Chevelle, ZZ502, AFR 305, Straub Solid Roller, 400 Turbo, Moser Rear 3.42 gear
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post #6 of 10 (permalink) Old May 15th, 19, 8:16 PM
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Re: Fan Speed Controller

Quote:
Originally Posted by Jeff65SS View Post
I have no review info for you, my friend has had good luck but not alot of runtime either.
I wonder how that controller tells when the engine is shut off. Notice it doesn't need an ignition hot wire. Perhaps when battery voltage dips after shutoff it turns the fans off? Or maybe it looks for alternator noise on the line? Either way, that one looks good for my car, as it handles about 20 more amps than my fans pull together.

'71 chevelle, 468, TH400, 12 bolt posi w/3.08's, drinks a lot of 87 octane.
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post #7 of 10 (permalink) Old May 15th, 19, 8:20 PM
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Re: Fan Speed Controller

I've used one of these with a Ford Taurus fan for years. It's always worked well for me. They used to be cheaper.

constant temperature controllers
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post #8 of 10 (permalink) Old May 16th, 19, 8:18 AM Thread Starter
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Mike
 
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Re: Fan Speed Controller

Thanks, Looks like they're all around $150. The fans arrived last night. They're a pair of 12" Durale that put out 2200 cfm each. I put them on a battery and they're loud. So it will be nice to have a fan controller not have them run 100% all the time.

67 Chevelle 454, M21
Gen IV 454 (out of C30 ), 390 heads 1.88/2.19 valves by Vortecpro, with ISKY Hyd Roller cam (at 050 218 int./228 exh, lift 530 int./552 exh.), RPM performer intake, Fitech 600HP, Dougs headers, and M21, Gear Vendors OD, 3.73's, UMI Suspension, Viking coilovers.
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post #9 of 10 (permalink) Old Jun 16th, 19, 7:30 PM
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Re: Fan Speed Controller

I bought and installed a controller from this guy: https://www.autocoolguy.com/
I saw him mentioned elsewhere on this site, and so far, I'm glad I bought one of his. His seem to be FAR FAR more rugged electrically than the regular brand names. His SMALLEST controller starts at 55 amps, and it just goes up from there. They do have pwm control, so the fans aren't screaming idiots as soon as you start the car. They have a cooldown timer set at 45 seconds or so. I took a look inside the one I bought, and as large as the rating is (200 amp), the output transistors are MUCH bigger than required. There are 10 transistors rated at 80 amps each, with each one individually fused at 25 amps. The build quality appears to be very good. It wasn't cheap, it was $250 delivered, but the lower rated ones are cheaper. I think this is a case of you get what you pay for. If you have very powerful fans, no unit from the better known names seems to be rated high enough to have some safety margin. This guy's stuff should take care of any fan setup you could possibly put on a road going vehicle, including a semi truck.

'71 chevelle, 468, TH400, 12 bolt posi w/3.08's, drinks a lot of 87 octane.
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post #10 of 10 (permalink) Old Jun 17th, 19, 4:27 PM
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Re: Fan Speed Controller

Theres also this one...

http://www.dccontrol.com/selector.htm

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