On Fri, Jul 30, 2010 at 4:54 PM, Ry <rylincoln@gmail.com> wrote:

> someone please tell me how you're creating a loop in which you will trap
> air
> any more than actually having the heater core hooked up?  coolant is still
> traveling through the same path just not through a heater core...
>
>
>
> prepared to be schooled,
> -Ry
> http://www.google.com/profiles/rylincoln
>
>   Basic hydraulics.  Your circulatory (coolant)  system is a closed system,
'pressurized' (circulated?) by the water pump.  Liquid will travel through
any path available and be at the same pressure in all the paths.  So when
you (or when I did, without thinking it through) remove the rear heater, the
valve and the heater radiator both, and connect the hoses together in a
loop, you have simply created an always open loop through which the coolant
will constantly circulate at the same pressure as that which is going
forward to the main radiator.  But now, at the rear 'loop', it no longer
passes through a radiator (the heater core) so it is simply wasted
circulation/ a diminishing of the effectiveness of your water pump...With
the rear heater in place and working...when you turn it on, you get cooling
of the coolant...Without that and an open loop, you get useless circulation
of the coolant only.
  You won't get air locks or bubbles...you just get wasted function from
your water pump.  If you closed off those hoses...the water hits a dead end
and then goes on through your real radiator, cooling the coolant...No
circulation through an un-cool loop...sorry for that one.
  Don Hanson