186D, Biodiesel compatibility

[oldgrayfellow-HT]

Just got a 186D, and i'm thinking to run biodiesel in it (B100)
From what i understand, the main thing to watch out for when running it in an older diesel engine is to replace any rubber components in the fuel system (that are exposed to the fuel) with viton (the biodiesel degrades the rubber), and also to change the filter soon after the switch, in case any built-up deposits are released inside the system.

Besides the rubber fuel line, does anyone know if there are any rubber or other biodiesel-incompatible components in the injection pump, or elsewhere in the system on a 186D? (I have a 1510 parts manual in Japanese, but can't tell what the parts are made of from that).

Thanks for any info.

 

[Aaron-HT]

It looks like #22 is the only oring in the injection pump.

<IMG src="http://www.hoyetractor.com/CATALOG/1510/ENGINE/IMAGES/INJPUMP.jpg"><s>

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There will be an oring in the fuel filter valve and one on the fuel bowl. Other than that I can't think of any.

 

[Norm-HT]

Why biodiesel? Yanmar owners don't normally use enough fuel for it to make a difference.

 

[oldgrayfellow-HT]

&gt;Why biodiesel? Yanmar owners don't normally use enough fuel for it to make a difference.


The benefits of potentially less smoke and less engine noise are my primary reasons for wanting to try Biodiesel.

It made a huge difference in the smoke from diesel buses here on the Texas A&amp;M college campus; went from loads of black smoke before they switched, to suddenly no visible smoke at all after the switch. Also BD is said to keep your engine cleaner and provide much more lubrication than petro diesel. Better for the tractor perhaps..

There's also the satisfaction of making the BD myself, at least when only needing to make 10 gallons or so for long time (like you said-- low fuel usage).
(If you could smell the BD that came from local doughnut shop grease... mmmm.)

 

[Aaron-HT]

I think bio-diesel is cool. I don't think it is overall very practical especially on a large scale but I think it would be a fun project... as if I dont have enough projects.

 

[alan-HT]

There was a thread on this, I think here (you could try the Search function) a couple years back. Concerns were the fine-ness of the filtering of the fuel before it gets in your tank, its ability to start the tractor, and viscosity (therefore flow) difficulties in low temps. It was recommended to use regular to get it going before switching to a second tank with bio, then back again before shutdown.

 

[DV-Dude-HT]

There is a company called greasecar.com or http://www.greasecar.com that sells conversion kits for cars and trucks. You might check with them to get the supplies to do your conversion. Also I remember reading that it is necessary to keep the regular diesel tank to on a car. The reason being is you need to both start on regular diesel and before you shut it down you need to flush out the system with the regular diesel. Apparently Biodiesel or vegetable oil can solidify in cold weather very easily.

Good Luck! <E></E>

 

[mus302-HT]

<QUOTE author="DV-Dude"><s>

</s>There is a company called greasecar.com or http://www.greasecar.com that sells conversion kits for cars and trucks. You might check with them to get the supplies to do your conversion. Also I remember reading that it is necessary to keep the regular diesel tank to on a car. The reason being is you need to both start on regular diesel and before you shut it down you need to flush out the system with the regular diesel. Apparently Biodiesel or vegetable oil can solidify in cold weather very easily.

Good Luck! <E></E><e>

/e></QUOTE>

You are actually talking two different things here. greasecar sells kits to run diesel engines on vegetable oil (new or waste). Biodiesel is made from vegetable oil (and less commonly other types of fats). In a nutshell, mix vegetable oil with the proper amounts of lye and methanol and a chemical reaction occurs making biodiesel which floats to the top and glycerin which settles to the bottom. Because the thicker portion (glycerin) has been removed biodiesel has attributes that are closer to petroleum diesel than vegetable oil. Because of that a conversion kit isn't needed to run biodiesel in a diesel engine but there are specific issues that can arise.

 

[Norm-HT]

"The benefits of potentially less smoke and less engine noise are my primary reasons for wanting to try Biodiesel."

Good running, properly operated Yanmars don't smoke. If you are getting more than an occasional wisp of noticable smoke, something is wrong.