Electric water pumps (was) alt charging cont sw

[Roger Heflin]

On Fri, 12 Mar 1999 ScottyCBoy at aol.com wrote:

>  
>  some guys have used things like marine bilge pumps
>  they are trubine style pumps with a strait trhough flow path
>  can move massive amounts of water with the larger sizes
>  should be no reason no to use one of these
>  
>  Clive  >>
> 
> I have pondered the us of electric water pumps and I believe that they would
> be beneficial in many ways:
> 
> First no thermostat would be needed, when the engine get's to operating temp
> the pump would turn on..
> 
Probably you would need a thermostat to regulate the varing speeds,
the hotter the engine gets that faster the pump goes.  I know there
are some computers that regulate their fans this way.

> Second the pump can run at varying speeds, while light cruising the pump speed
> would be slower than at full steam, saving fuel..
> 
> Thrid the engine could theoretically warm up quicker as there would be no leak
> past a closed thermostat and coolant wouldn't be circulating through a cold
> engine...

Someone was told by a manufacturer of one of those pumps that it was
not wise to not run the pump when the engine was running as hot spots
can form rather quickly and damage things.

> 
> Fourth reverse flow coolant systems could be retorfitted easily just by
> reversing the current to the pump, no special reverse flow pump impellers
> would be needed...
>

The heads/water ports are designed differently to flow the other
direction, so you cannot always just change the water direction and be
done with it, the ports are not always designed to flow both ways
correctly.   The LT1 engines have an entirely differnt water port
design so they flow correctly in the other direction.   My assumption
is that the normal chevy SB water ports won't flow optimally in the
reverse direction.

> Scott > 

			Roger