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seho_j

seho_j

Member
Nov 12, 2018
76
Charcoal briquettes are a pretty well known method in east asia but I don't really understand the details of how to do it. It's a bit difficult to find information on how much CO they would produce. They only burn around 1 hour, so I think I would need to use the briquette to ignite additional charcoal, would that be right?

Also, how would I test how much CO this would produce inside a small space without rousing suspicion or putting people in danger?
 
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locked*n*loaded

locked*n*loaded

Archangel
Apr 15, 2022
8,617
When I think of "briquettes", I think of small-ish, individual pieces of charcoal that come in a bag, which is normally used for grilling meat. I make no distinction between "briquettes" and "charcoal". I'm US btw.

That being said, you could measure the interior of the vehicle's interior length, width, and height, multiply them together, and get a decent approximation of the interior's volume. Once you have that number, there is a "guideline" that's used to calculate the MINIMUM amount of charcoal needed for the space you previously calculated. That guideline is 0.135kg/m³. Since it's the minimum, it would be a good idea to multiply whatever amount you calculate by 3, just to be sure you're using enough.

Charcoal is lit afire outside your chosen space and allowed to burn until all the charcoal is burning red-hot. It is at that point that the red-hot charcoals are moved into the space, the space is again closed off, and the charcoal is given some amount of time (20 minutes) to fill the space to a lethal level of CO. After the 20 minutes goes by, one enters the space, closes off the space quickly, and procedes to breath in the odorless and colorless CO gas.

In a vehicle you will need to be careful where you put the hot charcoal, so as not to start a fire. Bricks on the floor work well. It is best to use small metal pails to put the red-hot charcoals into. The best charcoal to use is probably lump-type that is 100% carbon with no additives.

If you have any other questions, feel free to ask.
 
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M

M.i.245541

Member
Mar 21, 2022
59
After the 20 minutes goes by, one enters the space, closes off the space quickly, and procedes to breath in the odorless and colorless CO gas.
What happens then when you inhale that air? Is it painful? Do you lose consciousness quickly?
 
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Konnsz

Konnsz

At the very end, you can only trust yourself.
Jan 2, 2023
96
You gotta be careful on that because if it fails you risk of permanent brain damage
 
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gottacheckout

Student
May 20, 2025
104
CO is a viable option. Supposedly painless, you just fall asleep.

I have heard that with the charcoal it can get very warm or even hot, uncomfortable even. While newer cars and motorcycles have catalytic converters and other emissions controlling devices that make them not effective as co generators, other outdoor equipment could be used. Electric generators are notorious for killing people during power outages when people bring them in the house. I've heard of cases where just having a windrow or door blocked open enough to pass the cord through had been enough. Likewise people also die from it when they are playing around on the swimming deck of a running boat. My pressure washer and riding mower also produce co.

As said above a failure could leave you in a really bad situation
 
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seho_j

seho_j

Member
Nov 12, 2018
76
When I think of "briquettes", I think of small-ish, individual pieces of charcoal that come in a bag, which is normally used for grilling meat. I make no distinction between "briquettes" and "charcoal". I'm US btw.

That being said, you could measure the interior of the vehicle's interior length, width, and height, multiply them together, and get a decent approximation of the interior's volume. Once you have that number, there is a "guideline" that's used to calculate the MINIMUM amount of charcoal needed for the space you previously calculated. That guideline is 0.135kg/m³. Since it's the minimum, it would be a good idea to multiply whatever amount you calculate by 3, just to be sure you're using enough.

Charcoal is lit afire outside your chosen space and allowed to burn until all the charcoal is burning red-hot. It is at that point that the red-hot charcoals are moved into the space, the space is again closed off, and the charcoal is given some amount of time (20 minutes) to fill the space to a lethal level of CO. After the 20 minutes goes by, one enters the space, closes off the space quickly, and procedes to breath in the odorless and colorless CO gas.

In a vehicle you will need to be careful where you put the hot charcoal, so as not to start a fire. Bricks on the floor work well. It is best to use small metal pails to put the red-hot charcoals into. The best charcoal to use is probably lump-type that is 100% carbon with no additives.

If you have any other questions, feel free to ask.
Thanks for the detailed response. I heard that "East Asian briquettes" are a bit different from briquettes in the US. I'm trying to research more about how it might affect the method but it has been a bit confusing. The briquettes here have additives to make them light up more easily but they are still common as a ctb method so I think they are viable. Still researching though.


Measuring the car dimensions might help. I'll have to think more about the details. Thanks for the suggestion!

I was thinking maybe the briquette to light the charcoal with no additives then the method you described might be easiest.
CO is a viable option. Supposedly painless, you just fall asleep.

I have heard that with the charcoal it can get very warm or even hot, uncomfortable even. While newer cars and motorcycles have catalytic converters and other emissions controlling devices that make them not effective as co generators, other outdoor equipment could be used. Electric generators are notorious for killing people during power outages when people bring them in the house. I've heard of cases where just having a windrow or door blocked open enough to pass the cord through had been enough. Likewise people also die from it when they are playing around on the swimming deck of a running boat. My pressure washer and riding mower also produce co.

As said above a failure could leave you in a really bad situation
I won't be using the car as a source of CO, just as the enclosed space. I plan to use actual charcoal as the CO source. I have a buttload of various benzos so I was planning to take those and falling asleep within the prepped car. The possibility of failure does scare me but my preferred method of SN is very difficult to access in my country.
 
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locked*n*loaded

locked*n*loaded

Archangel
Apr 15, 2022
8,617
What happens then when you inhale that air? Is it painful? Do you lose consciousness quickly?
If the CO level is high enough, you become unconscious quickly. How quickly you go unconscious is entirely dependent upon how high the CO level is. Becoming unconscious shouldn't be painful at all. That's kind of the whole point - to become unconscious quickly so as not to feel the later effects of death. Really, though, the only true way to know what concentration of CO is present in the "space" is to measure it with a CO analyzer. Any CO level of 10000 ppm, or more, is a high level that will bring unconsciousness quickly within a few breaths of the gas.
The briquettes here have additives to make them light up more easily but they are still common as a ctb method so I think they are viable. Still researching though.
Without knowing for certain, I'd bet them to be fine for our purpose. Anything added to them for "lighting" will quickly burn off while waiting for them to become red-hot.

There's definitely going to be a lot of heat in the vehicle from the hot charcoal. Ideally, you shouldn't have to deal with it for long if the CO level is high enough, since you should go unconscious after a few breaths, if the level is 10000 ppm, or more. Again, only way to know for certain is with a CO analyzer device. The vehicle needs to be sealed-up, too, as best as you can - vents, under doors, etc.
 
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M

M.i.245541

Member
Mar 21, 2022
59
If the CO level is high enough, you become unconscious quickly. How quickly you go unconscious is entirely dependent upon how high the CO level is. Becoming unconscious shouldn't be painful at all.
Do you know if it come gradually or fast? Will SI have time to kick in?
This method is starting to sound pretty good
 
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locked*n*loaded

locked*n*loaded

Archangel
Apr 15, 2022
8,617
Do you know if it come gradually or fast? Will SI have time to kick in?
This method is starting to sound pretty good
I don't think the CO takes that long to build up. Remember your lighting the charcoal OUTSIDE the vehicle, then WAITING until they are ALL burning red-hot, and THEN MOVING THEM into the vehicle, closing it up, and waiting MORE (20 minutes). After that time passes, THEN you get in the vehicle QUICKLY and close it up.

That's a LOT of time to pass. Certainly your SI is going to be kicking in HIGH GEAR. Waiting is hard. I'd imagine that your SI is going to be SKY HIGH at the point the charcoals have burned long enough in the vehicle and the time has come for you to get in.

I think with anyone using any method, how much SI someone has "when the time comes" is going to come down to how badly they want/need to go, and how comfortable they are with their decision.

I will say this about this CO method: if you get into the vehicle "at the right time" and you're in there for say 30 seconds to 1 minute, breathing in the CO, BUT nothing seems to be happening and you're NOT passing out, GET OUT OF THE VEHICLE AND ABORT THE ATTEMPT BECAUSE THE CO LEVEL IS APPARENTLY NOT HIGH ENOUGH. This way you live to try again another day, and don't end up with severe neurological damage. You need to get the level up to where you pass out IN SECONDS, NOT MINUTES.
 
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seho_j

seho_j

Member
Nov 12, 2018
76
I will say this about this CO method: if you get into the vehicle "at the right time" and you're in there for say 30 seconds to 1 minute, breathing in the CO, BUT nothing seems to be happening and you're NOT passing out, GET OUT OF THE VEHICLE AND ABORT THE ATTEMPT BECAUSE THE CO LEVEL IS APPARENTLY NOT HIGH ENOUGH. This way you live to try again another day, and don't end up with severe neurological damage. You need to get the level up to where you pass out IN SECONDS, NOT MINUTES.
Even if you are exposed to the CO for hours, would this happen? I'm a little confused about this aspect. Of course, I'd rather play it safe and do as you describe but the attached table has me confused.
 

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locked*n*loaded

locked*n*loaded

Archangel
Apr 15, 2022
8,617
Even if you are exposed to the CO for hours, would this happen?
Why would you be sitting in the car FOR HOURS, FULLY CONSCIOUS, breathing in low-level CO gas, when I just told you to get out after 30 sec to 1 minute, IF YOU DON'T FALL UNCONSCIOUS? Yes, that is dangerous because it can mess you up neurologically without necessarily killing you. It would be a very uncomfortable experience anyway. You'd probably have a major headache, nausea, perhaps vomiting. Who knows what else? This is exactly what we want to avoid by getting the CO level up high so you pass out quickly. It makes no sense to come out of this irreparably damaged and worse off than before you went into it.
 
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seho_j

seho_j

Member
Nov 12, 2018
76
Why would you be sitting in the car FOR HOURS, FULLY CONSCIOUS, breathing in low-level CO gas, when I just told you to get out after 30 sec to 1 minute, IF YOU DON'T FALL UNCONSCIOUS? Yes, that is dangerous because it can mess you up neurologically without necessarily killing you. It would be a very uncomfortable experience anyway. You'd probably have a major headache, nausea, perhaps vomiting. Who knows what else? This is exactly what we want to avoid by getting the CO level up high so you pass out quickly. It makes no sense to come out of this irreparably damaged and worse off than before you went into it.

As I wrote in my reply, I personally would play it safe and do what you said!

I was only curious about this type of scenario: If I took a few minutes to become unconscious and then stayed unconscious in the CO filled environment for hours would I still live? Of course I wouldn't just sit in a car filled with CO for hours while conscious, that would be crazy lol.
 
locked*n*loaded

locked*n*loaded

Archangel
Apr 15, 2022
8,617
I was only curious about this type of scenario: If I took a few minutes to become unconscious and then stayed unconscious in the CO filled environment for hours would I still live?
Probably not. If you got found before you died, that could be an issue.

Of course I wouldn't just sit in a car filled with CO for hours while conscious, that would be crazy
Fully agree.
 
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