Mep831a Yanmar engine repurpose

[aredman]

Has anyone repurposed the Yanmar out of mep831 and used for trash pump or other typical small engine uses? At the farm, we feed calves with a water trailer and thought maybe the diesel would hold up better. Thanks

 

[Coug]

I haven't seen the yanmar one, but the vast majority of engines designed for generator applications have a tapered crankshaft, and very few non generator attachments use that tapered shaft seat.
Most pumps and whatnot use a straight crankshaft with a keyway.

diesel engines are better in applications where they are going to be used under moderate to heavy load for extended periods of time. I don't know how long it takes you to feed/water the calves, but I'd say if it's less than about 20 minutes use at a time, then a gasoline engine is probably a better fit, as a diesel engine under light to moderate load might not even be up to operating temp for the first 10-15 minutes. Diesel is also harder to start in cold conditions compared to gasoline (just something to consider)

 

[DD58]

I have given it slot of though about putting a l100 on my old snow blower. It’s got a 7hp 1977 motor on it that needs a break. I think the l70ae would be fine but more power the better lol. I’ll see if I can get a picture of the old girl


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[aredman]

Yes I believe it is a tapered shaft. I see they make adapters, but never have used. Been using some cheap Briggs pumps, but pump probably runs 4-5 hours a day. And they just wear out. Quite a few calves in individual pens.

 

[DD58]

Having a taper shaft isn’t a big deal either an adaptor or get a Daytona coupler I’ve modified one for a customer to run on a taper shaft. I’d go for it. If I get my hands on one before the winter I’ll throw it on. You could always buy a different crank from Yanmar. It’s not to bad to tear it out and replace it.


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[Light in the Dark]

If I had money just laying around, I would order a Super Split log splitter, but use a Yanmar single lung for the powerplant instead of a gas job.

 

[aredman]

Well I bought 831 without an inverter, so just brainstorming ideas what to do with it. Or could just fix it.

 

[fb40dash5]

I've had the same curious thoughts, for the same reason. Passed a snowblower for sale in a driveway the other day, and went hmmmmmm that could be cool....

Aside from the tapered crankshaft, a couple other things to consider. Unless you want to pull start it, I don't believe the flywheel on it has a charging mag setup or VR, since the 831 is set up to charge from the PMA. And you'll either need 2 batteries or a 12V starter, unless you plan to slave it off of a MV, or pull start it.

 

[DD58]

Well I bought 831 without an inverter, so just brainstorming ideas what to do with it. Or could just fix it.

You could always ask kloppk if he is going to make any more conversion kits. Look at my posts I just finished mine with a few other mods.


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[kloppk]

You could always ask kloppk if he is going to make any more conversion kits. Look at my posts I just finished mine with a few other mods.

Yes, I'm still making them.
Per forum rules one can only have a few listings in the Classifieds section.

 

[Coug]

Yes I believe it is a tapered shaft. I see they make adapters, but never have used. Been using some cheap Briggs pumps, but pump probably runs 4-5 hours a day. And they just wear out. Quite a few calves in individual pens.

at 4-5 hours use a day, a diesel will definitely have the advantage over gasoline in everything but how loud it is.

 

[22/45]

Pull starting these isn't hard, at least in my experience. I have an L70 and a clone engine and they both pull start without too much fuss down to 30 degrees.

 

[aredman]

You could always ask kloppk if he is going to make any more conversion kits. Look at my posts I just finished mine with a few other mods.


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Send a link sometime.

 

[DD58]

Send a link sometime.

Mep831a conversion time!!

Good morning to all. A while ago more like the begging of this year I picked up from kloppk a conversion kit to remove the inverter and use a standard generator head. I finally got around to it resting the Mecca alt s16w gen head. It showed up last night and nice and wrapped up. Over the next...

www.steelsoldiers.com

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[Light in the Dark]

Pull starting these isn't hard, at least in my experience. I have an L70 and a clone engine and they both pull start without too much fuss down to 30 degrees.

The decompression lever is a definite helpful feature!

 

[NEIOWA]

I don't find the Yanmar hard to start. In cold weather, a extra few pulls to warm up the cylinder. Just go find one of the 125gpm pumps though vs converting a engine from a genset. Great little pumps.

The new Hatz engines/pumps are a better unit though. The Hatz engines are great.

 

[robson1015]

Yanmar engines are bulletproof in my opinion....

 

[aredman]

If they run out of fuel, do they self prime easily, on the Yan Mar

 

[DD58]

If they run out of fuel, do they self prime easily, on the Yan Mar

Yeah there not bad. Well if you have an electric fuel pump. I did it to the mep831 and just cracked the line on the injector until I got fuel there and started it up. It took a few seconds then smoothed right out.


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