On Sat, 26 Jun 2004, Dale McIntosh wrote:

> I've always wondered at what point either a pusher or puller fights/blocks
> normal air flow myself.  Any reputable fan mfg will tell you that a pusher
> is about 70% as efficient as the same fan in a puller configuration so
> that's something to consider when choosing a size.  I don't think you'd have
> a problem with one fan pushing more than another pulling as the pusher would
> only need to be working at lower engine RPMs anyway to compensate for lack
> of air moving across the cooling fins.  If you set it up to come on at 210
> or 220 and go off at 180 (or even a manual override switch), it should only
> be working at low engine speed anyway such as when you're in traffic and the
> temp climbs.

That makes a lot of sense. I'll be going ahead with the pusher because I'm 
too lazy to pull the shroud and fan.

Thanks.

-- 
Bob Holtzman
"If you think you're getting free lunch,
 ......check the price of the beer!"


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