Pics of modified stock cooling fans, Optimized for higher RPM use and optimum power Options

[Jake Raby]

All of these units are balanced to Kevin Groots E Production 2.0L SCCA engine. We havewent a little above and beyond to do this so he will have a variety of cooling fans that can be used at various tracks due to the track conditions and configuration.

Each of these will be tested on his engine while it's proving it's self in my new lab in just a couple of weeks in preparation of the 2007 SCCA season, his first with MassIVe power.
During testing we'll be comparing the effectiveness of the cooling fan in both temperature ranges and power potential so kevin will have baselines that he can use to choose the best fan for the particular track event be it qualifying or the mac daddy at the Run Offs....

Each of these will be tested both with and without our newest cooling system addition for the 914 engine, the cooling fan velocity enhancement ring. This ring works with any stock fan on any Type 4 fan housing as a bolt on component. It protrudes into the fan inlet and helps to boost the speed of the air entering the fan as well as helping to direct that air into the fan more effectively. The unit pictured is an R&D unit made for me by good ole "spunone" who has become our go to guy for trick test components like this! Thanks man!

I'll be posting data logs from the testing over on my forums in the "Dyno room" section in a couple of weeks..

[ahdoman]

Hey Jake, if you ever make it to LA we'll have to gold plate that cool "Massive" logo for you and hang it from a 24ct 1/2" link chain. (IMG:style_emoticons/default/aktion035.gif) I also know a dentist who can gold line your teeth to match! (IMG:style_emoticons/default/av-943.gif) Seriously - I'll be watching this project since where I live (and drive) the ambient summer temperature hovers around 100 degrees so any extra cooling without loosing HP is important.

[BK911]

... so any extra cooling without loosing HP is important.

Additional airflow requires additional power.

p1/p2 = (a1/a2)^3

So for a little more air you need a lot more power. In fact, 2x's the airflow requires 8x's the power.

[Dave_Darling]

Additional airflow requires additional power.

p1/p2 = (a1/a2)^3

That's only the case if "all other things are equal". As you can see, they're not equal. The fan's pumping efficiency is (supposedly) improved, so you can move more air without using more power.

Going the other way: You could take a stock system, and almost completely plug the inlet to the fan. That would greatly reduce the amount of air pumped by the fan, so to get back to the original amount of air you'd have to spin it much faster--which means more power used.

I also think the concept here is more volume, not more pressure.

It's worth noting that this is definitely one of those cases were "race car != street car" applies--in spades! Anyone doing this to their street 914's fan is likely going to wind up with real heat management problems...

--DD