Early VW non-Doghouse Fan Shroud Velocity Ring & Porsche 356/912
Brought to you by Awesome Powdercoat, this is a early VW non-doghouse fan shroud (pre-'71) velocity ring. It improves airflow through the fan shroud by 6.79% for an OEM fan and by 8.48% for my Evolution Two fan for early VW fan shrouds.
With the Evolution Two fan for early VW fan shrouds, the total increase is 26.7% over just the OEM fan with a velocity ring, and 33.49% over the OEM fan without the velocity ring.
You can either weld it in place using the holes in the tabs, or you can drill holes using the holes in the tabs as a guide, and use pop rivets.
Welding it in place is the best option, but not everyone has a welder or access to a welder or perhaps has the skill with a welder on thin sheet metal.