rad and coolantt

[Mario Tito]

>>>The thermostat is essential, even if you rip out the
>>>guts to make it into a '190 degree' or whatever equivalent.
>
>Whoops, I think I lied here, if your rip the guts it'll probably be a 100
>degree equivalent (dunno, I work in degrees C)
>
>Mario sez:
>>
>>I like that design of the thermostat blocking one port (to the bypass) 
>>and opening another (to the rad) at the set temp. 
>
>I assumed that most cars work like this. Not?
>
>>ps what is your air cooled?
>
>VW Variant 1700 FI.
>
>W
>
>
No- most , or, of the ones I've seen, just 'shut off' flow to the rad. 
The coolant bypasses by action of the blockage. 

On the thread of EFI and engine management, what exists now of 
electrically- controlled coolant valves?  Are there any stock systems 
that do that rather than use a stand- alone therm? Then, one could use 
the cool- the- head- cooler- than- the- block idea with just a second 
valve.
Mario T.