MECHANIC JOE SPEAKING
“Because an engine tends to run better as it grows older, due to a tendency for the cooling system to be less efficient, it is a good idea to experiment with sparking plugs for a hotter type engine. A change from one heat type to the next may produce enough difference to check what seems to be carbon knocking. “Plugs for a hotter engine have a shorter porcelain or core. This permits the heat to reach the top and threats more quickly, keeping the plug points cooler. Carbon deposits do raise compression to a point where the engine runs hotter than it did when new and clean, quite aside from the lowered efficiency of the water pump, radiator core and engine block.”-
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https://paperspast.natlib.govt.nz/newspapers/BOPT19410121.2.54
Bibliographic details
Bay of Plenty Times, Volume LXIX, Issue 13244, 21 January 1941, Page 7
Word Count
125MECHANIC JOE SPEAKING Bay of Plenty Times, Volume LXIX, Issue 13244, 21 January 1941, Page 7
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