www.bmwrocketscience.com - bmw E31 850ci with big electric fan upgrade.

replaced the belt driven fan with this 18" electric fan. you can hear it's like a hurricane under that hood. first just the fan, then the fan and engine running.
all electronics are wired in a box under the duct for stock appearance .
you can see two button rivets holding the relay box.
fan turns on low and high as demand calls for it ...
and keeps running after car shutdown for 2 minutes.
this upgrade improved engine power by 8hp to the wheel.
and is very quiet.
find us at www.bmwrocketscience.com

Category:

Autos & Vehicles

Tags:

• electrical fan
• bmw
• 850i 850ci
• 8 series
• performance
• racing
• motorsport
• v12

[jmcooney2000]

that is a seriously tasty engine nice upgrade too

[jay22nup]

Nice upgrade! V12's put off lots of heat.