[Healeys] Thermal Switch Hole in Cylinder Head

[wwycoffbn7 at aol.com]

 Mirek,
I am also a caretaker of one of the few cars that came equipped with the auxiliary carburetor instead of a mechanical choke.  The car came to us in 1982 and I fairly quickly got the hang of managing it. However, it did seem a bit worrisome because the engine would occasionally cough before it was properly warmed up.  When that occurred the back pressure would cause a fine mist of gasoline to blow out of the thermo carb and spray throughout the engine compartment. During a freshening up in 2009, Tom Kovacs related to me that this situation caused a lot of these thermo carb equipped cars to burn and often be destroyed.  This was apparently one of the reasons this feature did not last long in production.  Interesting in that it seemed to work well on Jaguars.   He changed out the system to  mechanical choke.   The cylinder head with the otter switch, intake manifold and other parts are stored in the garage in case a future owner wants to retrofit.   Best Regards, Bill
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