PWM (brushless) Rad fan
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On The Tree
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PWM (brushless) Rad fan I'm trying to find a couple of 12" brushless PWM fans for my Defender L83/6L80 project. I just want the fans, no shroud as I have to do that myself. I can't seem to find anything except Derale kits, but the reviews aren't very good and I would be paying for a shroud I can't use. Space is at a premium so looking for a slim profile of course, my rad is about 29"x16". Anyone got any ideas???
Thanks,
Sean
Thanks,
Sean
There are many inexpensive OEM options, the C7 being one of them. It's a big single, but it is rated at 600 watts. You will obviously need some way to provide the PWM- signal.
Andrew
Andrew
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On The Tree
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Thanks again,
Sean
It seems that GM tends to favor large single fans these days. Also check out the Cadillacs, ATS...CTS...and the little SUV...XTS? Whatever happened to cool car names?! :-)
Andrew
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Thread Starter
On The Tree
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IDK haha, sorry.
This is seriously frustrating enough to just buy a kit, use the fans and throw the rest in the bin lol. I was searching all kinds but trying to get dimensions or CFM ratings is tough. Now that I looked at my Speartech wiring harness I noticed a PWM fan wire so now I have to call them and see what that is for???? I'm getting over my head with this, I'm more of a fabricator or a bolt turner lol.
Thanks for what you've given me so far, it looks like I might have to walk through some dealerships with my tape measure.
Sean
This is seriously frustrating enough to just buy a kit, use the fans and throw the rest in the bin lol. I was searching all kinds but trying to get dimensions or CFM ratings is tough. Now that I looked at my Speartech wiring harness I noticed a PWM fan wire so now I have to call them and see what that is for???? I'm getting over my head with this, I'm more of a fabricator or a bolt turner lol.
Thanks for what you've given me so far, it looks like I might have to walk through some dealerships with my tape measure.
Sean
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Verdad Gallardo IDK haha, sorry.
This is seriously frustrating enough to just buy a kit, use the fans and throw the rest in the bin lol. I was searching all kinds but trying to get dimensions or CFM ratings is tough. Now that I looked at my Speartech wiring harness I noticed a PWM fan wire so now I have to call them and see what that is for???? I'm getting over my head with this, I'm more of a fabricator or a bolt turner lol.
Thanks for what you've given me so far, it looks like I might have to walk through some dealerships with my tape measure.
Sean
This is seriously frustrating enough to just buy a kit, use the fans and throw the rest in the bin lol. I was searching all kinds but trying to get dimensions or CFM ratings is tough. Now that I looked at my Speartech wiring harness I noticed a PWM fan wire so now I have to call them and see what that is for???? I'm getting over my head with this, I'm more of a fabricator or a bolt turner lol.
Thanks for what you've given me so far, it looks like I might have to walk through some dealerships with my tape measure.
Sean
Don't get frustrated. Have a look at Rockauto. They generally have pictures and often have dimensions. I also have a SPAL catalog. I'll look at it when I get home and look up some dimensions for you. If Speartech did the harness then you should be good to go. I'll post more info when I get on my laptop.
Andrew
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On The Tree
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I think I found the 12" Spal I can use a couple of, now to find them for sale somewhere......
I was scouring the Rockauto website lol.
https://www.spalautomotive.it/brushl...0p-n-94a/36647
edit: I'm such a dummy, I looked at the Wizard site but didn't scroll down all the way. They have all the specs here:
https://wizardcooling.com/spal-brushless-fans/
I was scouring the Rockauto website lol.
https://www.spalautomotive.it/brushl...0p-n-94a/36647
edit: I'm such a dummy, I looked at the Wizard site but didn't scroll down all the way. They have all the specs here:
https://wizardcooling.com/spal-brushless-fans/
Last edited by sgo70; Jan 26, 2020 at 02:50 PM.
The reason I mentioned the C7 fan is that it's inexpensive. I think the aftermarket SPAL fans are pretty expensive, but I don't know that for sure.
I also think a large single is more efficient and probably quieter as well. I use a C6 fan on my Cougar with the C6 fan controller. The new fans have the controller built in.
Andrew
I also think a large single is more efficient and probably quieter as well. I use a C6 fan on my Cougar with the C6 fan controller. The new fans have the controller built in.
Andrew
Thread Starter
On The Tree
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Okay, I really wasn't sure what year the C7 is but I looked up a 2019 Corvette with the 6.2 and the assembly is only $250 CAD (I'm in Canada). That is cheap. Now I have to figure out the dimensions but I feel like I'm getting somewhere with your help, I appreciate it tons.
Looks like 14" by 3" deep 600 watts and the Camaro is 17" and 800 watts but not sure of the depth. I think I can make the Camaro one work if the fan is the same depth.
Sean
Looks like 14" by 3" deep 600 watts and the Camaro is 17" and 800 watts but not sure of the depth. I think I can make the Camaro one work if the fan is the same depth.
Sean
Last edited by sgo70; Jan 26, 2020 at 03:35 PM.
Okay, I really wasn't sure what year the C7 is but I looked up a 2019 Corvette with the 6.2 and the assembly is only $250 CAD (I'm in Canada). That is cheap. Now I have to figure out the dimensions but I feel like I'm getting somewhere with your help, I appreciate it tons.
Looks like 14" by 3" deep 600 watts and the Camaro is 17" and 800 watts but not sure of the depth. I think I can make the Camaro one work if the fan is the same depth.
Sean
Looks like 14" by 3" deep 600 watts and the Camaro is 17" and 800 watts but not sure of the depth. I think I can make the Camaro one work if the fan is the same depth.
Sean
All that sounds correct. I think the Camaro fan is the same as the Cadillac fans. Eight hundred watts is a beast. If you can fit that, go with it. Make sure to run 8 gauge wire for power and ground. That fan will draw 57 amps at 14 volts. I've seen the power wires on a Camaro and they were definitely bigger than 10 gauge. I'd run the power connection through a 60 amp circuit breaker...maybe even 70...maybe 80...even.
In all honesty, I think the C7 600 watt fan will do the trick for you. The C6 fan that I am using is 400 watts.
Also, keep the full stock plastic shroud. It has holes and flappy doors, so that when your moving air can pass through it. I always do a face palm when I see people building shrouds that fully block off the radiator with the air being pushed solely through the fan opening. You don't want to do that!
Good pictures of the C7 fan here:
Here is the SPAL mating connector:
This is a Yazaki connector, USCAR standard, found on a lot of vehicles.
Andrew
Last edited by Project GatTagO; Jan 26, 2020 at 05:50 PM.
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Delta PAG fans. I spent some time with those guys at PRI this year and noticed them on a lot of the Drag Week cars that were there.
Used C7 fan seems to be $300 or so.
12" Delta PAG brushless fan with the standalone controller and probe sensor is $379.
Without the controller (PWM controlled by your ECU) is $305.
They put out a very impressive amount of air and draw extremely low power, 1750 CFM for the small 12" at a fair bit fewer amps than a comparable SPAL.
They're also less than 3" thick at the max.
I'm putting 2 of the 12" on my Corvette and the Nova is probably getting a single 16".
Used C7 fan seems to be $300 or so.
12" Delta PAG brushless fan with the standalone controller and probe sensor is $379.
Without the controller (PWM controlled by your ECU) is $305.
They put out a very impressive amount of air and draw extremely low power, 1750 CFM for the small 12" at a fair bit fewer amps than a comparable SPAL.
They're also less than 3" thick at the max.
I'm putting 2 of the 12" on my Corvette and the Nova is probably getting a single 16".
Thread Starter
On The Tree
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Thanks once more to both of you. Those Delta PAG fans look like a good fit, slim profile helps at 2.71", the $680 for the pair is pretty steep lol.
Andrew, I think you're right, the Camaro will be a bit to big and probably unnecessary. I was thinking with such a tight engine compartment and bush bumper, winch etc it would be good to get as much as possible but then again it's a 5.3, not a 6.2 so C7 is probably enough. I think with that shroud it will be too thick but I'll have to take some final measurements once I get the radiator from Ron Davis. I can fab the flappers on a custom shroud easy enough (that kind of thing is easy for me, unlike the tech stuff lol).
Now another question. Does that wire in my harness mean the fan is controlled by my ECM (E92) and I don't need all the extras??? You guys are going to have to start billing me for info haha. I've found a couple of long threads on this elsewhere but it seems to be confusing me more.
Thanks in advance,
Sean
Andrew, I think you're right, the Camaro will be a bit to big and probably unnecessary. I was thinking with such a tight engine compartment and bush bumper, winch etc it would be good to get as much as possible but then again it's a 5.3, not a 6.2 so C7 is probably enough. I think with that shroud it will be too thick but I'll have to take some final measurements once I get the radiator from Ron Davis. I can fab the flappers on a custom shroud easy enough (that kind of thing is easy for me, unlike the tech stuff lol).
Now another question. Does that wire in my harness mean the fan is controlled by my ECM (E92) and I don't need all the extras??? You guys are going to have to start billing me for info haha. I've found a couple of long threads on this elsewhere but it seems to be confusing me more.
Thanks in advance,
Sean
....Does that wire in my harness mean the fan is controlled by my ECM (E92) and I don't need all the extras??? You guys are going to have to start billing me for info haha. I've found a couple of long threads on this elsewhere but it seems to be confusing me more.
Thanks in advance,
Sean
Thanks in advance,
Sean
The fan in my Cougar rarely goes about 50%, but I have a hole in the hood which helps a lot. I also do this with a Holley Dominator ECU, but the principle is exactly the same.
Andrew
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PWM signal directly from an ECU works.