CANDELLE, is the Italian word for Spark plug.
WHY THE Spica made GOLDEN LODGE SPARKPLUG WAS MADE FOR YOUR ALFA ROMEO ENGINE.
THE 101, 102, 105, 106, 116 CYLINDER HEAD HAS A UNIQUE HEMISPHERICAL COMBUSTION CHAMBER, WITH THE SPARK PLUG HOLE BEING DIRECTLY OVERHEAD THE DOMED PISTON,THE VALVES AS BIG AS THEY ARE, TAKING A LOCATION EITHER SIDE OF THE HOLE LEAVING millimetres EITHER SIDE. THE PRINCIPAL BEING THAT HAVING 40 OR 45 SIDE DRAUGHT WEBER, DELL'ORTO OR EVEN SOLEX BRAND CARBURETTORS ON ONE SIDE AND AN EQUIVALENT SIZE EXHAUST EXTRACTOR ON THE OTHER CREATES EVEN BACKPRESSURE. THIS WORKING WITH THE HEMISPHERICAL COMBUSTION CHAMBER WOULD REQURE A SPARKPLUG WITH A CENTRE ELECTRODE TO EFFECT MINIMAL CHAMBER INGRESS.
THE GOLDEN LODGE HAS, BEST DESCRIBED AS A CENTRAL BUTTON WITH ONLY A 4 Millimetre PROTRUSION INTO THE CHAMBER WITH 4 RADIAL EARTHING POINTS ON THE PLUG BODY.
THE PRINCIPLAL WORKS WELL, WITH THE HOT SPARK JUMPING TO WHICH EVER IS THE COOLER OF THESE POINTS CREATING A TOTAL FLASH IN THE COMBUSTION CHAMBER THOSE MILLIMETRES ON TOP OF THE ENCRAOCHING PISTON. CONVENTIONAL SPARK PLUGS HAVE A PENETRATING ELECTRODE AND THIS LIMITS THE FLASH PATTERN ON IGNITION, WHILST STILL PROBABLE OF PRE DETONATION ON THE LARGE SPARK SURFACE.
