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  1. Jan 23, 2021 · Push Or Pull. “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.

  2. 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.

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  4. Jun 13, 2009 · You will definitely need to runs these through separate relays. Separate the two 22" rad fans into individual circuits/relays. Use one fan for low temp and the other for high temp. Most ECU's are capable of doing this. If not, use a VW rad fan thermal switch. They have two seperate temp settings and one thermal switch can be used for both low ...

  5. 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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  6. Sep 21, 2011 · I doubled the air flow of my cooling fan, with a SPAL fan. With no mods of the wiring, mounting bracket. If you research, or ask the electrical gurus on the forum.. SPAL fans use less amps to start up, and run... And show MORE cfm of air moved... Just a suggestion... from experience... Both the RC51s, and aleast one of the Shawks have a SPAL fan...

  7. Dec 15, 2021 · At full speed 100-percent of the time, 24 hours a day, SPAL’s brushless fans are expected to outlive a standard fan setup 4–5 fold, which breaks down to brushless fans offering at least 40,000 hours of longevity. In comparison, a normal, non-brushless fan, only has about 5,000–15,000 hours of life on average.

  8. Oct 14, 2013 · After having a non-sealed Spal fan fail on the 30102130 (dual 12" Spal fans as used in the SharkBlade) I wanted to go back and design a slim fan shroud that would: A) fit the 928 radiator exactly B) allow the installation of two of the sealed 12" Fans - 30102029 C) be slim enough to easily get at the crank pulley

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