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So I use the GM harness to power on the primary fan, and the native chassis harness (non-GM) to power the secondary fan. Calibration file is untouched except for MAF and Speedo calibration. At 203F both fans turn on, and stay on until the car turns off.
- Push Or Pull
- Taking The Curve Or Going Straight
- In A Nutshell
- The Big Blow
“Using a puller fan is seen as a better practice,” says Brent Chuck, application engineer at SPAL USA. “Mounting the fan in front of the radiator adds a restriction to airflow through the system. So, it’s seen as a better practice to put the fan on the engine side and add the restriction after the radiator. When the fan is mounted as a pusher, it b...
Another thing to consider is blade design. SPAL has various blade designs to choose from (straight, curved, and paddle), and each has an operational parameter. “Usually, people have the best results from the thicker fans and the thicker fan blades,” says Brent. “I typically recommend fans like our part number 30102082 with a curved-paddle blade. Th...
Performance:
1. The curved-paddle blade is the best for performance but is a thicker fan requiring more room. 2. The straight blade is the next option in regard to performance. 3. The curved S-blade does not perform as well as the others.
Noise:
1. The straight-blade fan is the loudest. 2. The curved S-blade delivers improved noise reduction. 3. A paddle blade is the quietest. The blade design is more aggressive, so it makes more of a wind sound versus a whining sound like the others. “Basically, we always recommend paddle blades if you can fit them,” says Brent. “They offer the best noise/performance. The other two designs are simply made to be thin, so they make a less desirable noise.”
Finally, electric fans are rated according to the amount of air that can be pushed or pulled through the radiator. This is measured in cubic-feet-per-minute (cfm). In order to find the fan that will work best for your needs, you first need to determine the ideal amount of airflow required to meet your cooling capacity. As a guideline, a typical sma...
People also ask
How do I choose a SPAL electric fan?
Can I add a second fan?
Does SPAL have a pusher or puller fan?
What is a SPAL fan controller (fan-PWM)?
Aug 9, 2023 · Has anyone else had a problem with a spal fan? Sitting there idling the clutch fan was pulling way more air then that spal ever thought about. It even seems warmer in the engine compartment now without the clutch fan also.
The short answer is no. Every fan SPAL manufacturers is individually balanced three times during the production process. Once a component (blade, shroud or motor) is damaged, it cannot be replaced and maintain the high level of performance and efficiency expected of SPAL products.
Secondary Fan Positive PWM Secondary Fan Output (grey wire) Ignition Chassis Ground without AC: Connects To: Positive 12 VDC Directly to Battery Ground Directly to Battery Primary Fan Positive Primary Fan Ground Ignition Air Conditioning Input (Not Used) Secondary Fan Output SPAL Temperature Sensor Ground Positive 12 VDC Directly to Battery
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Jan 17, 2008 · Anyone using Spal cooling fans? Thread starter Thomas95SC; Start date May 9, 2005; T. Thomas95SC Registered User. May 9, 2005 #1
A second fan can be added but requires the use of an additional relay to control the secondary fan (SPAL part number FRH). The secondary fan will not be variable speed; it will be ON/OFF only. Because the FAN-PWM was designed to alter the speed of the fan, SPAL USA suggests setting the High 10° to 20° above the thermostat rating and setting the
