PWM cooling fan(s) control using ECM

[andrewb70]

Originally Posted by dontlifttoshift

Here is a dumb thing, it is seemingly impossible to purchase a Spal brushless fan by itself anywhere on the internet. It seems they used to be everywhere and they have all ghosted.

Anyone have a source?

I'm sure DeWitts will sell me one, I was just surprised when I couldn't find it at Summit, Lane, or anywhere else where they had been listed before.

Semi related, I have the GM 600 watt fan in my hand. Part number 23376530 It is absolutely a Spal unit, their name is all over it. Not sure if that is common knowledge or not.

The fan blade measures 14 1/4"

The meat of the shroud is 23" wide and 13 1/2" tall. This would work really well on a 24 x 16 core.

Donny,

Do you know the OEM application for that fan?

The brushless fans are easy to spot because they have the heatsink on the motors and the big, round Yazaki connector with two big wires and a small wire for the PWM signal.

Andrew

[andrewb70]

Found it. Looks like C7 Corvette.

C&R makes C7 Radiators and they will sell the little aluminum tabs that can be easily welded to any aluminum radiator. That is what I did with the C6 fan on my Cougar.

Andrew

[jmac]

So Andrew,

The brushless Spal fans have the PWM built in to the motor housing, eliminating the need for the C6 controller?

I'm just trying to get an idea of wiring, and would love to eliminate the C6 controller of I can.

Thanks!

[dontlifttoshift]

Yes, the C7 fan and the Spal brushless have the controller built in. You still need to send it a signal though and I do not know if they require the same signal.

They both appear to take the same Yazaki connector and they are available as a kit on ebay pretty reasonably.

[andrewb70]

Originally Posted by dontlifttoshift

...

They both appear to take the same Yazaki connector and they are available as a kit on ebay pretty reasonably.

Donny,

As I understand it, that big Yazaki is a USCAR standard, which explains why they are readily available. I've seen them on many makes and models.

Otherwise, sourcing Yazaki connectors and terminals is nearly impossible in the US. I went down this rabbit hole trying to source new connectors for my Toyota EPAS science project.

Andrew

[eville]

Originally Posted by dontlifttoshift

Yes, the C7 fan and the Spal brushless have the controller built in. You still need to send it a signal though and I do not know if they require the same signal.

They both appear to take the same Yazaki connector and they are available as a kit on ebay pretty reasonably.

Hmmm, I'd been planning to run the C6style controller through my Holley ECU on my dual SPAL setup by Ron Davis but I wonder if SPAL makes a brushless that would bolt in place of the older style fans... would be much cleaner.

[andrewb70]

Originally Posted by eville

Hmmm, I'd been planning to run the C6style controller through my Holley ECU on my dual SPAL setup by Ron Davis but I wonder if SPAL makes a brushless that would bolt in place of the older style fans... would be much cleaner.

From what has been posted earlier in this thread, I see no reason why the Dominator can't work with the brushless fans. As far as brushless fans that take the place of the older dual fans, you will have to dig deep into the Spal catalog.

The trend that I am seeing with OEM applications is toward one large 600 or 800watt fan (the C6 fan is 400watt).

Andrew

[eville]

Originally Posted by andrewb70

From what has been posted earlier in this thread, I see no reason why the Dominator can't work with the brushless fans. As far as brushless fans that take the place of the older dual fans, you will have to dig deep into the Spal catalog.

The trend that I am seeing with OEM applications is toward one large 600 or 800watt fan (the C6 fan is 400watt).

Andrew

Yeah, I'm only seeing 12 and 14" fans. I'll give Ron Davis a call.

[andrewb70]

Originally Posted by jmac

So Andrew,

The brushless Spal fans have the PWM built in to the motor housing, eliminating the need for the C6 controller?

....

That is my understanding. I do not have first hand experience with them, but this thread has all the relevant information.

Although, if you already have a C6 controller and a good fan, I see no reason to change.

Andrew

[jmac]

Originally Posted by andrewb70

That is my understanding. I do not have first hand experience with them, but this thread has all the relevant information.

Although, if you already have a C6 controller and a good fan, I see no reason to change.

Andrew

Thanks, I do not have the C6 controller yet, plan on using the Holley Dominator like you, just wired directly to the fan.