David is correct.
An engine driven water pump is designed to operate at high effiency at low
engine rpm. This is so much the case that high rpm engines benefit from
running the pump at a lower speed.
Regards
Weslake-Monza 1330
In a message dated 19/01/2009 14:26:18 GMT Standard Time,
oldsaabguy@comcast.net writes:
David,
I would beg to differ.
At idle a regular water pump is not working well at all, slow speed,
no air moving over radiator, low water pumping.
Electric water pump works all the time (if you want) so that you get
great water flow at idle or whenever.
That said, I have only seen them on racecars as well but racers are
frequently ahead of the curve... ;-)
Lester
On Jan 19, 2009, at 6:54 AM, David Lieb wrote:
>> ... He doesnt address electric waterpumps, I was
>> wondering why... having an electric water pump would reduce drag,
>> thus
>> allowing for more power, anyone have any ideas? Also going along
>> with this
>> idea, why doesnt he recomend an electric fan?
>
> Matt,
snip
>
> Electric water pumps are seldom used by anyone but a racer. Most
> beneficial
> when the car sits at WOT for extended periods. Not nearly so logical
> when
> significant time is spent idling.
> David Lieb
_______________________________________________
Support Team.Net http://www.team.net/donate.html
http://www.team.net/archive
http://autox.team.net/mailman/listinfo/spridgets
|