View Poll Results: What kind of fuel are you using?
Gasoline 55 19.57%
Diesel 187 66.55%
Propane 18 6.41%
Veggie Oil 17 6.05%
Other 4 1.42%
Voters: 281. You may not vote on this poll

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Old 10-10-2017, 01:33 PM   #61
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
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Year: 1991
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Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
the only reason I could think of that WMO may not work in an electronic engine is that you have no easy way to change the metering of the fuel going in.. with mechanical you can adjust your fuel screws / plate for more or less fuel depending on how you manufacture your fuel.. the electronic systems dont have much support for tuning.. at least not at the Medium duty level like our busses.. (cummins 5.9 maybe?)..

if your manufactured fuel is very close in BTU output and viscosity to diesel when its going into the system then id see no reason why it cant run in a computerized diesel..

Most of the diesels we have here on the forum have no feedback.. they are simply a pre-programmed curve based on temperatures / speed / engine load.. unlike a gasoline engine where an O2 sensor and knock sensor are often employed to help determine how well the engine is running and adjust fueling accordingly on the fly.. I think somewhere ive seen mention of knock sensors in diesels for fuel timing on-the-fly but cant remember where I read it..

in the HEUI engine world (DT-466E, Cat-3126, T444E, VT365) to name a few there was some work in which the ICP sensor value was manufactured to run up the HPOP pressure and fuel heavier.. as well as manufactured Crank position sensor to control fuel timing.. I wasnt involved in that project and I could see several areas where it went wrong... ive done alot of ECM hacking over the years on Gas cars.. havent done alot yet on diesel busses.. im just getting started by altering J1939 comms between modules.....
-Christopher
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Old 10-10-2017, 01:47 PM   #62
Skoolie
 
Join Date: Apr 2015
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Quote:
Originally Posted by cadillackid View Post
the only reason I could think of that WMO may not work in an electronic engine is that you have no easy way to change the metering of the fuel going in.. with mechanical you can adjust your fuel screws / plate for more or less fuel depending on how you manufacture your fuel.. the electronic systems dont have much support for tuning.. at least not at the Medium duty level like our busses.. (cummins 5.9 maybe?)..

if your manufactured fuel is very close in BTU output and viscosity to diesel when its going into the system then id see no reason why it cant run in a computerized diesel..

.....
-Christopher
plus 1.

I always add the disclaimer for about 2 reasons. My degree is in Auto related subjects and I have zero experience with heavy duty aps. But I do know that old Bosch mechanical injector pump pretty well. Also, back in the day I grafted some GM TBI stuff on MGBs, among other crazy stuff.

Also, the cost of efi injectors in current applications is REAL high. Given the way conversations go on the internet, I have no desire to get involved in of them "BUT YOU SAID" ... when I have no idea what the condition of the engine was before something I gave an opinion on was tried.

That manufacturers are kinda picky about warranties, I was shocked that the two Caterpillar manuals listed in the bibliography of the thread I shared do give WMO creds as fuel.

I don't internet much anymore. Just stuck my head up to learn a bit about that centrifuge.
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Old 10-10-2017, 01:53 PM   #63
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
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Year: 1991
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Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
yeah I tend to always tell people that im sharing *MY* results in *MY* application.. ie just like my transmission swap and the electromics related... ive been telling people all along.. hey this worked for me.. *BUT* it may not for you...

people often look at someone's build Log and think of it as a manual and not just ideas for how to design their own build or as one person;s experiences to view and get their own juices flowing..

-Christopher
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Old 10-12-2017, 12:13 AM   #64
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Year: 1993
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The big issue with the newer engines and WMO is the fuel opacity sensor that most of them have. That along with picky injection systems (that are expensive to work on) and such. I can replace the ENTIRE fuel system including injection pump and injectors in my old IDI for the cost of 4 injectors in a 6.0 powerstroke or 6.6 dmax.

As far as tuning... There are several companies out that put out waste oil tunes for 7.3 powerstrokes. The only thing I tinker with as far as tuning goes anyways is timing. Now as far as getting tuned on a medium duty setup... more then likely would have to find someone willing to write a custom tune which isn't too hard these days.

On the "electronic" 6.5... the only electronic control as far as I know is of timing. Everything else is still mechanical. I know some of the older 6.2s and 6.5s dont mind waste oil at all.
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Old 10-12-2017, 04:48 AM   #65
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
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Chassis: International 3800
Engine: DTA360 / MT643
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Most of our busses aren't the Ford variants of power strokes..
on a HEUI engine, timingbabd amount of fuel are controllable.
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Old 10-12-2017, 09:05 AM   #66
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Quote:
Originally Posted by cadillackid View Post
Most of our busses aren't the Ford variants of power strokes..
on a HEUI engine, timingbabd amount of fuel are controllable.
Right... I was replying to your electronic engine comments. There is tuning available or ways around it... but I personally wouldn't want to run WMO in something that isn't mechanical. Components are too costly to replace if something goes wrong.

As far as tuning... we don't mess with fuel rates as we run on diesel and wmo.. 2 independent systems. Don't want to have to change things every time you switch fuels. From my experience, there isn't much "tuning", if any, required. It all just depends on if the fuel system will handle the oil or not. A slight static timing bump can help (oil has more potential energy but burns slower... advancing the timing helps with that).. but isn't a must.
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Old 06-26-2018, 06:11 PM   #67
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Engine: 6.6 LLY Duramax
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When people are talking “biodiesel”, is that like some homegrown moonshine or what the BP, a major fuel provider like Exxon or shell, offers?
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Old 08-30-2018, 06:43 PM   #68
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Engine: C7 caterpillar Allison automatic heavy foot
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not advised !

im running hom cough hea cough fuel and touch propane just for a little oomph!!! getting up those hills
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