[VB] redux: Porsche Pulley

[Lee]

So you are saying that with the fan running a little slower ? the engine 
ran cooler ?

Is this a fan load/resistance issue ?

Lee

On 22/07/2013 05:22, C. Dreike wrote:
> Hi,
> Ran an experiment on my upright engine. Last weekend I motored down
> and back up the freeway at WOT using the stock pulley on my
> alternator. Today I ran once again however with a Porsche pulley.
> Slightly smaller diameter, have not yet made an estimation of how much
> smaller. Ambient air temperature was about 70F on both runs. With
> stock pulley I saw CHT at about 365F and still slightly rising. Today
> with the Porsche pulley I saw a max of about 345F. I hit 75mph before
> I let up on the throttle.  I think I'll keep the Porsche unit in
> place.
>
> BTW, the stock belt is 905mm. I went to a 890 for the PP.
>
> Cheers!
> Chris
> 64 DD Kamper Kit
>
> Scientists seek to understand what is,
> while engineers seek to create what never was.
> As the "Bad Astronomer" Phil Plait says, "Teach a man to reason, and
> he can think for a lifetime."
>
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