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Author Topic: 1115 build  (Read 1676 times)

38ac

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Re: 1115 build
« Reply #15 on: March 01, 2019, 11:17:31 AM »
You can absolutely throttle the engine back. Under light loadings it will save a bit of fuel but the bigger issue is noise.  A 1115 up against the stops is one obnoxious sob.  My set up runs just under 1800 rpm. The larger ones like the 1115 are equipped with balance shafts and you should keep the RPM above the gear rattle stage.  Also keep in mind that the injection timing is set for factory RPM thus long hours at heavy  loadings and reduced RPM would benefit from retarding  the timing a bit.
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Willw

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Re: 1115 build
« Reply #16 on: March 01, 2019, 01:36:40 PM »
Hello all, can anyone please measure the diameter of the 1115 flywheel?

Has anyone tried driving the gen-head off the engine flywheel rim like we do with the Listeroids?

I am trying to get a rough idea of the size pulley that would be needed for the alternator in order to reduce engine operating RPM.

I don't have a Chinese horizontal yet, but I've been drooling over the 1130's on Alibaba.com and I hope to have two along with some spares by the time my birthday rolls around.

I figure I could reduce the RPM on that monster and still run most anything in the house.
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Tanman

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Re: 1115 build
« Reply #17 on: March 02, 2019, 05:27:19 PM »
So I'm still stuck between a 7.5kw and 10kw head, either one would be plenty of power for me. If they are both rated at their respective power at 1800rpm, would it be better to pony up for the 10kw and run it at 1400-1500rpm (with WI and timing adjustment) if my main goal for this build is longevity? Also, here are some pics of the engine fresh out of the crate and mounted to a dolly for working on and moving around.
Yanmar L100-5KW set
Chinese 1115-8KW stamford
96 Suburban 6.5 turbo

38ac

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Re: 1115 build
« Reply #18 on: March 02, 2019, 06:20:21 PM »
I run a 15KW on mine.  Don't need that many and the engine wouldn't pull it if I did. The extra capacity does two things for you. It helps start motor loads such as water pumps or A/C units and you have more amps available to either 110 volt branch circuit when wired for 220 operation which saves on load management.
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mike90045

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Re: 1115 build
« Reply #19 on: March 02, 2019, 09:15:50 PM »
At some point, windage looses from the huge fan in the 20kw head becomes more of a load then your electrical.   I'd only go up 1 size from your engine
 I've a 6/1 which pairs to a 3Kw, but I went with a 5kw, to be able to manage unbalanced loads a bit better, and not run the windings smoking hot.   If I went to a 7.5kw it would still generate the 3kw my engine can produce, but now I'm running a bigger fan, moving more air, and maybe the engine can only pull 2.7kw
 I'm just pulling number out of the sky here, but the alternator cooling fan is NOT a negligible load, I think 1 step up is enough unless you have a special need.

Tanman

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Re: 1115 build
« Reply #20 on: March 03, 2019, 04:26:48 AM »
Any recommendations on ST head suppliers? Also, 38AC where did you get your pulley for the st side of your 1115 setup?
« Last Edit: March 03, 2019, 04:28:38 AM by Tanman »
Yanmar L100-5KW set
Chinese 1115-8KW stamford
96 Suburban 6.5 turbo

38ac

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Re: 1115 build
« Reply #21 on: March 03, 2019, 01:05:08 PM »
I purchase bits like that on ebay, seems there is always somebody on there with my needs for give away prices. Figure out what diameter you need and how many grooves, and include QD bushing in your search. Then search for a bushing by type, SD,SH etc, and by your shaft size in MM.
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38ac

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Re: 1115 build
« Reply #22 on: March 03, 2019, 01:11:09 PM »
Mike , you may be right a out the fan but my gut tells me different.  The fan on my st15 is it only 2" larger than my st5. I suspect that the power requirement at 1800 RPM is fractional. Again, nothing but my intuition with no facts to back it up.
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Tanman

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Re: 1115 build
« Reply #23 on: April 28, 2019, 11:09:48 PM »
She ran today! After struggling to take the fuel pump apart, I soaked it in diesel for 2 days, put on a thick glove and smashed it against a 2x4. It finally came loose after about 6 hits. I cleaned it, reassembled and the engine ran. The only problem was it wouldn’t turn off or idle down, so I shut off the fuel and it slowly wound down and died. I removed the pump again to try and figure it out but I am stumped. It seems that there is just very little control over the amount of fuel being pumped. I’m not sure if I need to adjust the ring with teeth on the inside of the pump or if it is defective.
Yanmar L100-5KW set
Chinese 1115-8KW stamford
96 Suburban 6.5 turbo

glort

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Re: 1115 build
« Reply #24 on: April 29, 2019, 06:47:57 AM »

the pumps on the smaller engines anyway have a  cam or a pin on the pump and a slotted tab in the engine it engages.
If you don't ine them up, which is easy to do, you have no throttle control.

First one I did was a China Vertical cyl Diesel and the Pump was at max Fuelling. . Thing was blowing flames like a top fueler out the Muffler and went nuts. How I didn't blow it to pieces is testament to the way these things are built. I stopped it with the Decompression lever  and then removed the pump and figured my error.

Take the pump off again and look in the hole and wiggle the throttle. You will see something that engages with something else on the pump. Line them up and you should be able to feel the difference in the resistance. While since I have done one and never that size engine but they are all about the same and i'd be sure you have missed the internal linkage somewhere.

I have done a few gummed pumps but never one as hard to get apart as you describe. They are all so simple you can figure the things out by just looking at them.  Also very robust so you can run them on anything and they will digest it happily.

old seagull man

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Re: 1115 build
« Reply #25 on: April 29, 2019, 07:32:28 AM »
Have you the parts, instruction  manual that came with your engine there is an exploded view of the pump in it.
Thats how i did mine. if not im shore i have a pdf of the 1115 engine somewhere. just let me kn ow.  Ok.

Tanman

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Re: 1115 build
« Reply #26 on: May 11, 2019, 10:40:34 PM »
So I figured out the issue. There are many ways the notched part of the pump with the small teeth all around is fit into the pump, one common way is for the notches to be horizontal, the other is the have them vertical. Mine needed the notches to be vertical and for the plunger (inner piece with the diagonal cut across it) to have the cut section facing up. I had to try it in every common combination to find the correct configuration, because the manual states what order the pump goes together but not which way the plunger is supposed to be rotated to begin with. No problems now  ;D
Yanmar L100-5KW set
Chinese 1115-8KW stamford
96 Suburban 6.5 turbo

ajaffa1

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Re: 1115 build
« Reply #27 on: May 12, 2019, 12:12:33 AM »
Well done Tanman, the application of a little brain power usually sorts these things out. I recently rebuilt a Bosch injector pump, the original parts all had witness marks to show the correct alignment. The service kit that I purchased from Bosch had none, bugger of a job counting teeth and etc to get it back together right.

Bob

glort

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Re: 1115 build
« Reply #28 on: May 12, 2019, 10:59:20 AM »
The service kit that I purchased from Bosch had none, bugger of a job counting teeth and etc to get it back together right.


Probably made in China or India and put in a Bosch box.

Tanman

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Re: 1115 build
« Reply #29 on: May 13, 2019, 01:14:12 PM »
So now that the engine is running correctly, I'm going to turn my attention to building a frame, acquiring a gen head, and getting other accessories like a pulley. The frame and genny are pretty straight forward. I am a little confused on pulleys. I'm going with the same size and grooves as the the one that came stock on the engine based on Mr. Calder's advice. But are the shafts on the gen heads and the pulley's that go on them pretty universal on size and design? I've never done anything with pulleys and belts besides accessories on cars like alternators and they come with pulleys.
« Last Edit: May 13, 2019, 01:18:15 PM by Tanman »
Yanmar L100-5KW set
Chinese 1115-8KW stamford
96 Suburban 6.5 turbo