Petrol generators
- Thread starter jj4091
- Start date
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whats wrong with the engine?
I'm afraid it is old & well goosed, replaced valves that were burnt out, it is difficult to start, the exhaust is shot & the main oil seal leaks badly. Definitely not worth spending any more time or money on. I haven't been able to find a reasonably priced replacement & wondered if others had any experience.
What make and model is it?
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Many small generators use the engine bearings at one end and to swap type of engine is really not easy.
Where bearings are used both ends of the generator with a coupling then yes you could change the engine but holding petrol engines at a set revs is not easy. We look at a droop of around 5% which is not easy with petrol.
The newer generators are inverter types where the output is or is converted to DC then back to AC and the voltage and frequency is kept correct by the inverter and the engine revs can change with load.
Using this method the engine can idle when there is no load and uses a lot less fuel.
At 6.5 H.P it should be more like 4.5kVA not 2.2W. So I would question is it really worth doing anything with it? You may find a new unit pays for its self in fuel saving.
Where bearings are used both ends of the generator with a coupling then yes you could change the engine but holding petrol engines at a set revs is not easy. We look at a droop of around 5% which is not easy with petrol.
The newer generators are inverter types where the output is or is converted to DC then back to AC and the voltage and frequency is kept correct by the inverter and the engine revs can change with load.
Using this method the engine can idle when there is no load and uses a lot less fuel.
At 6.5 H.P it should be more like 4.5kVA not 2.2W. So I would question is it really worth doing anything with it? You may find a new unit pays for its self in fuel saving.
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