[Mgs] Thermostats and overheating - 80B

[The Roxter]

Eugene Balinski wrote:
> All,
>
>     My 80B is running too warm. It used to run one needle
> width to the left of center no matter what the outside
> temperature.  It now runs 1 - 2 needles to the right of
> center, and the fans come on when moving at 20 MPH or less.
> It is hot.  
>   
>    My first thought  was coolant level.  I checked and it
> seemed to be at the right level both in the cylinder head
> at the thermostat housing, and at the overflow container.
>  So my second thought is the thermostat.   180 degrees is
> standard.  Is there any harm in going to the 160 degree
> thermostat ?  I do use the car in the cooler fall months.  
>
>    My other thoughts for overheating (if the thermostat
> does not cure the problem) is a clogged radiator, 
> and perhaps a water pump problem ?  I seem to remember that
> the water pumps can "partially" fail with the impellers
> breaking off, and/or wearing such that the move less water.
>  Does anyone have any experience with this ?
Might be a clog in the water jacket of the block. Have you tried any of the major brand flushes?

-The Roxter
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