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+--- Thread: ROLLING COAL (/thread-4329.html)
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ROLLING COAL - GotSmart - 07-07-2022
Usually when I see someone who has made extreme modifications to their vehicle it is for a purpose that makes sense. At least to me.
Today I saw a heavy modified truck with push bars, wheel flairs high lift and rolling coal. He was towing a 30 ft 5th wheel.
Now rolling coal is when’s Diesel engine is modified to produce black smoke. I have not looked into this fad but know it really produces a sooty mess. I cannot get it why people choose to blow that smoke. ~~~ All over that guys new 5th wheel. He was doing over 70 uphill.
Does it make them go faster?
RE: ROLLING COAL - Gypsyjoe - 07-07-2022
No it doesn't make them go faster, actually all it is is raw fuel.
RE: ROLLING COAL - GotSmart - 07-07-2022
So he spent $6 a gallon to blow raw diesel on his new 5th wheel.
I don’t get it.
RE: ROLLING COAL - Wayne49 - 07-07-2022
It is controlled from the cab. You would not be wrong to think that the driver is also stupid enough to leave the switch on.
Alternatively, he was pulling a heavy load at speed uphill, and his engine couldn't burn any more fuel, as it was giving it all she had.
RE: ROLLING COAL - tx2sturgis - 07-07-2022
The slang term for this is deleted, delete kit, deleted diesel, etc,
It means all or most of the emissions controls that help diesel engines burn clean, are all 'deleted'.
Don't shoot the messenger, but the fact is that yes it's dirty, sometimes obnoxious, BUT...the engine will almost always produce more power and get better fuel mileage with all the EPA and CARB emission garbage removed. Not to mention that a lot of that hardware is unreliable, prone to problems, and expensive to replace when it does break. Couple this with the added expense of DEF and the crappy diesel available these days and the DPF problems...you can hate on the guys that do this and yes it causes a lot of soot.
MY solution is NO DIESEL ENGINES FOR PRIVATELY-OWNED ON-ROAD VEHICLES. But nobody wants to hear that either.
RE: ROLLING COAL - GotSmart - 07-08-2022
I was just thinking about the hours of detail work to clean up the mess on his rig. It is wet and the streaks were running fast!
RE: ROLLING COAL - GotSmart - 07-08-2022
After looking it up. The simple truth is that if you see black smoke the fuel is not being used and the engine is not running efficiently. Clogged air filters or stuck injection is usually the culprit on rigs that are not modified to do this.
Modern EPA “crap” is part of a system that gets as much power from a gallon of fuel as possible. I can’t believe that blowing fuel out the pipe gives you more power.
RE: ROLLING COAL - tx2sturgis - 07-08-2022
(07-08-2022, 02:22 AM)GotSmart Wrote: After looking it up. The simple truth is that if you see black smoke the fuel is not being used and the engine is not running efficiently. Clogged air filters or stuck injection is usually the culprit on rigs that are not modified to do this.
Modern EPA “crap” is part of a system that gets as much power from a gallon of fuel as possible. I can’t believe that blowing fuel out the pipe gives you more power.
The first assumption is kinda correct, but that's not the whole story. EGR (exhaust gas recirculation) SCR (selective catalytic reduction) and DPF (diesel particulate filter) systems (related to scrubbing diesel engine exhaust) cause a significant DROP in fuel efficiency. A DPF for instance, squirts raw fuel into the filter to 'catalyze' at very high temperature the pollutants into a less harmful 'ash' that is released over a longer period of time during cruise, or it can be initiated manually, this is called a 'regen' cycle and it burns precious fuel to do it. Not to mention the DEF (diesel exhaust fluid) that is used to help accomplish the 'clean-up'...and BTW there is now talk of a DEF shortage. Most modern diesel engines will go into 'limp' mode when the DEF tank runs out. You might get 5 mph, and sit on the side of the road or in a driveway until you can find more DEF. If you get lucky. DEF itself causes another 'hit' to the environment in the manufacture, transportation and storage of it.
Plus it costs a LOT of money to maintain and repair these complex systems when they break. It can literally cost multiple thousands of dollars every few years to keep a diesel engine running after the warranty runs out on the emissions hardware, sometimes that happens after 50k or 100k miles. Then what is the owner supposed to do? And some of the sensors and chips needed are simply no longer available or you have to wait weeks or months to get your diesel truck back on the road because of one sensor or one computer board, with today's supply chain issues. A DPF filter can cost several thousand dollars...if you can find a new one. Refurbs can be found but they often have a very short warranty period. A 'deleted' diesel fixes nearly ALL of these problems, with MORE power produced and/or less overall fuel consumed, and no more DPF or DEF or SCR crap to worry about. And yes, you will see it 'rolling coal'...spitting soot all over you, me, and the environment.
I dont like it either, so as I say, my answer (should I ever be put in charge of everything) is to put gasoline engines (or maybe electric motors) in every vehicle that is non-commercial.
(warning: rant follows!) And yes, I know this is bad for consumers who want to drive big rigs or SuperDuty pickups or diesel powered Jeeps, or whatever. But the fact is we really need to reduce private use of diesel fuel so that more of it is available and cheaper for the commercial market..so we can get our milk and bread and meat and everything else we need at a reasonable price WITHOUT huge fuel surcharges added on to every damn thing we buy. (rant over)
Your second assumption is also, not correct. EPA emissions control hardware is all about scrubbing diesel exhaust, not getting more miles per gallon, and it never has been. EVERY new round of emissions regulations has caused a reduction in fuel economy. Every single time. This is documented and one of the main reasons that 'glider kits' exist. A glider kit in the trucking industry is a brand new body and frame plus running gear, wrapped around an older rebuilt or remanufactured diesel engine, so that a driver can operate a brand new truck, all the new goodies, but the old rebuilt engine is legal to operate with little or no modern emissions controls because it's maybe 15 or 20 years old.
Its a complicated issue and I know it might seem like it SHOULD be simple. But it aint.
RE: ROLLING COAL - tx2sturgis - 07-08-2022
Here is a random video I found where a shop removes all the emissions crap from a Dodge Diesel pickup and the truck will perform much better without it.
Better fuel mileage, more power. And just as important, it will be more reliable, well, at least the engine will be. Sometimes the transmission is not able to handle the extra torque and that might be an issue later on.
In this video, they do pay some attention to smoke output at normal highway cruise, but I can just about guarantee that the owner will rotate that aftermarket HP selector knob poking out from the dash to MAX especially if he ever pulls a trailer or is passing someone up a steep grade and that truck will be ROLLING COAL!!!
RE: ROLLING COAL - GotSmart - 07-09-2022
I accept your answers and admit my lack of knowledge in this area. You have worked with Diesel engines almost as long as I have worked on herding cats.
Yesterday I mentioned the incident to a AC technician and he started getting angry at the lack of knowledge from the mechanics to properly tune his company’s diesel Mercedes van. The solution seems to be bypassing all emissions.
We need to have a industry wide push to find a better way.