re <VV> Engine cylinder head temperature guage?

[Padgett]

>  You can either put a ring sending "unit"one under a spark  plug, or use 
> the bosses on all Corvair heads.

According to the notes in the engineering documents (available from 
Clark"s) the spark plug is about 100F less than the under cyl head 
location, that is why the switch/thermister is there.

My spark plug sensors run 280-300F (on #2 and #5 plugs) on the Interstate 
on a hot Florida day. This implies around 400F underneath. I plan to move 
the sensors the next time I have the lower shrouds off.

Padgett