Good afternoon all,
A couple of months ago I picked up a Nissan GX1000 generator that dates from the mid-1980's the best I can tell.
It is a four stroke, 3,600 RPM unit rated at 750 watts AC output and has a 12V DC output of a rating I cannot remember. After cleaning out the fuel system, it starts, runs, and generates fine. Given how clean it is internal to the generator head and other places where dirt would normal accumulate, I doubt it has more than 50 or so hours on it. Certainly it sat someplace where it wasn't given a lot of love as you can tell with the rust on it.
As to noise level, it is probably on-par with a Honda of similar size. You can have a conversation standing right next to it running without raising your voice.
The only thing that bothers me is that when its running at load, it has a metallic buzzing/knocking sound that seems most prevalent on the side of the unit with the muffler. Listening to the engine crankcase with it running via a length of tubing stuck into my ear, I don't hear the buzzing/knocking sound.
The noise is not influenced at all by motor oil choice. It does it with straight SAE 30 as called for on the decal and is no less loud with synthetic 5W-40 which is in it right now. I've changed the oil a couple of times now, and there are no metal chips in the oil, and it comes out pretty clean.
So...I'm curious to see what other people think that the noise might me? I've looked for the obvious - no loose sheet metal, no loose bolts, etc... Below is a youtube video showing it running at idle and with a 500 watt load from a halogen shop lamp.
YouTube Video - Nissan GX1000 Generator Running with and without Load
Curious what y'all think?
thanks much,
ben
A couple of months ago I picked up a Nissan GX1000 generator that dates from the mid-1980's the best I can tell.
It is a four stroke, 3,600 RPM unit rated at 750 watts AC output and has a 12V DC output of a rating I cannot remember. After cleaning out the fuel system, it starts, runs, and generates fine. Given how clean it is internal to the generator head and other places where dirt would normal accumulate, I doubt it has more than 50 or so hours on it. Certainly it sat someplace where it wasn't given a lot of love as you can tell with the rust on it.
As to noise level, it is probably on-par with a Honda of similar size. You can have a conversation standing right next to it running without raising your voice.
The only thing that bothers me is that when its running at load, it has a metallic buzzing/knocking sound that seems most prevalent on the side of the unit with the muffler. Listening to the engine crankcase with it running via a length of tubing stuck into my ear, I don't hear the buzzing/knocking sound.
The noise is not influenced at all by motor oil choice. It does it with straight SAE 30 as called for on the decal and is no less loud with synthetic 5W-40 which is in it right now. I've changed the oil a couple of times now, and there are no metal chips in the oil, and it comes out pretty clean.
So...I'm curious to see what other people think that the noise might me? I've looked for the obvious - no loose sheet metal, no loose bolts, etc... Below is a youtube video showing it running at idle and with a 500 watt load from a halogen shop lamp.
YouTube Video - Nissan GX1000 Generator Running with and without Load
Curious what y'all think?
thanks much,
ben