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posted by
someone claiming to be oldduke
on
Thu Aug 8 20:59 CST 2013 [ RELATED]
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hi sages- not sure im following on the rationale here behind saying the flame trap can be eliminated due to crank case fires possibly being caused by carbs which cars dont have any more. crankcases need ventilation to reduce pressure built up by oil fumes and blow by gases from the combustion chambers. most american cars either had an open pipe to the atmosphere to vent these gases but that was replaced by pcv systems which had a valve to sense the buildup of pressure in a running engine and route them back to the throttle plate on the carb to be burned in the cylinders . about 63-64 the pcv systems came in and prevented venting to the atmosphere(a no no with increasing concerns for emissions). if you eliminated the frame trap in the volvo 240 which my 92 has you would still have to route the crankcase gases to the combustion chambers or the pressures would cause seals to leak oil correct? thanks tons oldduke
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