Originally posted by caseih
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One of gensets had the oil filler cap on same head as crankcase ventilator pipe and there was some valve noise develop after a couple years. It was found to have that white oil crud starting to accumulate from lack of ventilation in valve cover on the one head. However a pleasant surprise was that the valve noise all disappeared when the oil filler and its mesh breather was put on the noisy side. An oil change was all that was needed. Should make a Youtube video of that bright idea before it gets forgotten. The valve covers even had identical filler openings.
You'r correct though. Thirty thousand hours and you'd say the rings might have just worn in. The motors do run what seems to be hot; but have never shut down or boiled except for water pump/fan belt related incidents. Fan belts (even though double v belt design) is second weakest link. However removing the fan blade and using an electric motor driven large torrington HVAC fan for draft eliminates belt failure as only waterpump circulation is actually involved. The alternator is really just used as a tightener and the gensets could have their trickle charger plugged in to keep the battery in shape.
Pretty troublefree setup; and super dependable so far in 5 or more years of use.
Now a person can expect to begin to have troubles. Never pays to complement things made out of iron.
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