. I have seen a lot of burned out petrol generators caused by the fuel running out under a heavy load.


Bob

Yessir Bob, my little operation sees all kinds of small engine problems and lots of non working generators. My first question is always Did you run it out of fuel under load? To which they almost always answer, Uh no,, but would that hurt it? 😆  Sometines they are lucky and it takes out the regulator, other times it cooks windings, I think it depends on how fast it dies as it runs out of fuel?  Anyway I quit allowing people to leave the burned out ones here as the junknpile grew out of hand,😆

Good job !

X2!   Thanks for posting your problem and the fix. Real world fixes are the best source of information for others

Hello and welcome to the LEF

No, the engine should not use all of the valve stem oil in 4 hours. There is no seals on the valve stems, they rely on correct fit but India screws up several things that affect how much oil is consumed.
First thing is that on most, but not all India guides they decided it would be a good idea to drill a small hole in the side of the guides to let the oil run to the stem. If your guides are drilled then you cannot stop the oil usage without dissasembly and plugging them. I use a piece of lead shot with a tight fit.
Second thing is a loose fit of the valves in the guides. Original valve stems were 7/16" Some India valves are 7/16, some are 11mm. All of the guides are 7/16" if 11mm valves are installed in 7/16 guides(common) there is way too much cearance and oil consumption will be high.
Third thing is India will put a huge chamfer on top of the guides to act as a funnel,  another  bad move. I machine them flat and lightly deburr.
All of the fixes for oil consumption require head removal and machine work.  Very little oil is needed up there. The bulk of the engines that go through my little operation have never been oiled up top or seldom at best and they don't seem to suffer for it.
Last thing is the black goop in exhaust is not always from oil, it can also be from bad injector or bad injector timing and what appears to be oil is just unburned fuel and carbon mix. This is more of a problem with cold and lightly loaded engines than hot and heavily loaded.

When everything is done right up top you should see very little oil usage up top in an 8 hour run.

Quote from: 38ac on June 29, 2022, 01:14:53 PM

Incidentally, do you think this kind of attitude keeps people from even trying to make the situation better?

Actually no I do not.  Realize that you are looking at the main gathering point for people interested in these engines. Count the traffic. Count the number who showed ANY interest in. buying your engines. Your excitement for these engines is understandable, I like them myself but you need to understand just hiw limited the market is. That's not pessimism, thats just fact.

The engine runs a tick over 1800 at 60 Hz and flicker is almost non existent at light loads but is noticeable at heavier loadings. For some reason the LEDs seem to flicker more than the few CFLs and incandescent lights we have left. Yes we run everything and other than the slight flicker there is no difference in the ST or grid power. Still running the stock harmonic excitation. I wonder if the oversized head has something to due with the output quality? I am about as electrically ignorant as can be found.

This 16/2 found its way into my truck today, supposed to be rebuilt, we will see about that,
This engine will be for sale. I can't give a deffinate price until I get into it. I don't haggle on public forums send me a PM of you have interest.

It's quite possible alcohol or very strong coffee is involved with these bursts of motivational thinking. Peaters out pretty quickly.

 

15 years ago I built up a stand by generator set with a 1115 Changfa and a 15KW ST head fron Georgia Generator.  Probably has 300 hours on it now as our power rarely goes out but when it does it is out for a while. Last time was 5 days. Monday a Derecho blew through here and power has been out since and the set has been powering the old farm house same as normal. AC on, cooking, lights, laundry, everything.  Fueled the set last night and just fueled again exactly 12 hours apart. 3 1/2 gallons. 1.16 quarts per hour. Im sure not going to complain about that when the neighbor is running a 10KW gas screamer at almost a gallon per hour. Do the math on that, $5 gas x 1 per hour x 24 hours per day. dang expensive comfort if you ask me.
Only repairs I have had is the ST bridge rectifier went bad in first hour of operation. Replaced it with a 5010 bridge diode and heat sinked it to the box.
As an aside we sure are seeing who has no buisiness living out in the country. The crying on social media is unbearable.