Generator Muffler Mods

westend wrote:
I own this same generator. I use it on job sites and at home for emergency power. There are no heroic measures that are going to quiet this beast. It is one of the loudest generators I've owned.

A muffler retrofit is going to quiet it some but there is still going to be a racket. A better solution might be to use a long, heavy cord and park it at a distance.

The OP started this thread back in the beginning of Dec, only posted once and most likely has left..

Westend is correct, the noise from the muffler is such a small part that it will make virtually no change to the sound level of this type of generator.

I have a 8Kw Harbor Freight gen for my whole house setup, I connected a short flexible tail pipe to the muffler to vent the exhaust outside my separate garage building.

The sound coming from flexible pipe that exits the building is extremely quiet, in fact 10 ft away and you simply would not know that a 13 HP aircooled engine is running 3600 RPM..

Now, if you step foot into the garage building with this gen running you BETTER have HEARING PROTECTION ON. It is extremely loud inside the garage.

You can put the worlds most quiet muffler on it and it will not change the noise level, all the noise coming off this type of gen is mechanical in nature and is completely normal and expected.

The bigger gen, the noisier it will be, just the nature of the beast.

Smaller low noise gens often have special design considerations which are implemented in the body of the engine. Often vibrations are dampened via certain reinforcements in the correct places internally in the engine block..

Something that cannot be added after the fact.

Extremely long extension cord and or a structure like a three sided box can often provide some noise reduction..

Just be aware, use of your contractor gen might make you very unpopular in a crowded campground.. NASCAR race, you might be able to get away with it, but busy campgrounds, not so much..