Brad -
On my +8 (1977), the heater valve is off when the knob is pulled out and
turns on when it's pushed forward. There are two small metal flaps to close
off the heater box outlets in warm weather.
Like you noted, there always seems to be some residual hot air coming from
out of the heater vent openings but closing the flaps stops that or at least
sends it up to the defroster outlets where it mixes with cool outside air.
Brad Farr wrote:
> >The cable runs through the bulkhead and attaches to a valve that opens
> >and closes the flow of hot coolant into the heater box. It is a 3 inch
> >round brass affair with hose aand cable attached in front of the
> >bulkhead heater box) If you pull the knob it opens the valve and if you
> >push it closes the valve.
>
> Is this also true for later Plus 8s? Given the amount of heat that I
> feel in warm weather, I've often wondered if the cable merely controlled
> an air flap in the box, but I've never taken the box apart to look.
> Thanks,
> Brad
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