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Old 06-06-2020, 01:07 PM   #36 (permalink)
kach22i
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Quote:
Originally Posted by Piotrsko View Post
Fwiw, someone * years ago dyno'd a type 2 engine fan/alternator combo on a drag car and found it used about 15 hp IIRC. On the ranger, currents to idle with the PS pump and alternator calculate to be about 10 hp so I can see consuming 10 with cooling alone.

*HOT VW magazine perhaps?

I agree the porsche fan could be altering local flow but 35 horse to run it seems a bit steep.
Well, let's put this in context with the additional information you have provided.

15hp on a Type-2 engine (1.1 to 2.0 L) that is half the size of the Porsche engine (2.4 to 3.6 liters).

I am to understand via the track racing folks that the 5-blade cooling fan on my. 2.7L consumes 5 hp less than than the later and more powerful 11-blade fan.

15 +15 + 5 = 35 hp

Sketchbook math, but it adds up.
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Last edited by kach22i; 06-06-2020 at 01:26 PM..
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