3116 Cat Engine Life Expectancy. Another rule of thumb, is to figure out total miles on any engine.in the 60`s i was told an hr is/was equal to 30 miles.today, i would say it`s closer to 40 miles. I had 300 hp 3116´s with over 3,500 hours that ran perfectly, but they were seldom run above 2200 rpm´s except for short.
But if it was run at trawler speeds, the hours don't mean a problem. B10 is the average life expectancy of an engine measured in miles where 10% of the produced engines failed and needed a major overhaul. Clean fuel and 100hr oil change and low rpm cruising will last u a very long time.
Cat 3116 Marine Engine
Inspect the components of the pump more frequently when the pump is exposed to debris, It has 216,000 miles, and was gone through and spec'd and gaskets and rings were replaced at 198,000. Consequently, b50 is the average miles where 50% of the engines failed. Impellers have a service life that is limited.
