well what the heck..... mine hasnt got one at all, it came into my posession without it, so what should i do?? it hasnt ever bothered me before....
Charcoal Canister?
- Thread starter FlikRacing
- Start date
I took my charcoal can out because 1: my jdm motor didnt come with a place in the thermostat housing for the bvsv 2. my bvsv was broken and i ran out of money during the engine swap and 3. the TB didnt have a port for the vacuum line to go to.
Now i just have the line run down into the fenderwell, never smell gas fumes and my tank always has positive pressure. If i ever take the cap off it has a huge pressure release.
I dont see how gasoline vapors will harm the atmosphere..We probably release more fumes into the air just pumping gas into our cars everyday than comes out of the tank when running the car not to mention the oil refineries releasing these fumes as well.
Also our 19+ year old turbo charged cars are not the opitemy of "clean burning vehicles." Now i can see that not running a cateyltic convertor is bad for the atmosphere, just geez, how many big diesel trucks are on the road with no cats, trains buring diesel, millions of passenger jets flying around running fuel thats equivalent to kerosene/diesel. Something tells me some gasoline fumes from a few hundred cars arent going effect much.
But one day i might install the small Honda EVAP can into the Supra.
Now i just have the line run down into the fenderwell, never smell gas fumes and my tank always has positive pressure. If i ever take the cap off it has a huge pressure release.
I dont see how gasoline vapors will harm the atmosphere..We probably release more fumes into the air just pumping gas into our cars everyday than comes out of the tank when running the car not to mention the oil refineries releasing these fumes as well.
Also our 19+ year old turbo charged cars are not the opitemy of "clean burning vehicles." Now i can see that not running a cateyltic convertor is bad for the atmosphere, just geez, how many big diesel trucks are on the road with no cats, trains buring diesel, millions of passenger jets flying around running fuel thats equivalent to kerosene/diesel. Something tells me some gasoline fumes from a few hundred cars arent going effect much.
But one day i might install the small Honda EVAP can into the Supra.
RedEj8;1006228 said:
Replying to your bolded items...
More than likely that is air being sucked IN, even so, too much pressure turns the tank into a BOMB.
Gas pumps have evap recovery systems on them, it's also how they know when to automaticly shut off.
Don't get me started on diesels, or jet engines, do some research first...
If the stock "system" isn't in place it will affect total volume of fuel available to the motor.
Depending on how it's been "modded" it will be a + or a - amount and needs to be taken into account when tuning.
(vacc in the tank will reduce flow pressure will increase it)
As neither of these can be monitored you can't compensate for them easily so it's going to be an issue, add ambient temps to this and you can see why it's inportant to have a stable known quantity in a fuel system.
My "beef" with Cletus mods is the people that usually do them don't have a basic understanding of the system in place before they rip into it making it "better" .... :nono:
Depending on how it's been "modded" it will be a + or a - amount and needs to be taken into account when tuning.
(vacc in the tank will reduce flow pressure will increase it)
As neither of these can be monitored you can't compensate for them easily so it's going to be an issue, add ambient temps to this and you can see why it's inportant to have a stable known quantity in a fuel system.
My "beef" with Cletus mods is the people that usually do them don't have a basic understanding of the system in place before they rip into it making it "better" .... :nono:
but to be honest i have no idea what exactly is wrong here, i have enough pressure in my tank for it to work just fine, but no hiss when i open cap and i never smell fumes anytime im anywhere near the motor, ever, so idk what the heck..... i mean, it runs fantastic, so what is wrong or not wrong or uuuuugh idk
Poodles;1006285 said:
Air is always sucked into our gas tanks, hence the vented fuel caps. When i take the fuel cap off my car it sounds just like my honda(which still has its evap can) when i take its fuel cap off. A big Pssssshhh.
But have you ever watched all the fumes pouring out while pumping gas..Now mulitply that times however many people get gas in a day.
I have done research on diesels, newer passenger trucks are using EGR systems to get a much more complete burn and also using very advanced catelytic devices. But big trucks, 18 wheelers, have no emission systems(catelytic convertors). At least the older ones dont which are probably more than 90% on the ones on the road.
Enlighten me on jets..All i ever see when theyre taking off is streams of black emissions behind their engines. Im just not seeing how some gasoline vapors are worse than exhaust emissions...
Giter - there is zero reason not to have a charcoal canister installed.
Red - it is irrelevant what other vehicles do or what happens at the pump as far as emissions goes. What you're saying is "everyone else pisses in the street, then I should too". And, BTW...the Mk III does not have a vented gas cap.
Red - it is irrelevant what other vehicles do or what happens at the pump as far as emissions goes. What you're saying is "everyone else pisses in the street, then I should too". And, BTW...the Mk III does not have a vented gas cap.
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EC&P=6
A better way to put it is the gas cap is not vented to the atmosphere. If you look at the above link, there is a check valve in the cap that allows air into the tank under vacuum. Fuel vapor is flowed into the canister when the tank is under pressure...iirc, the system maintains 2 psi positive pressure in the tank.
A better way to put it is the gas cap is not vented to the atmosphere. If you look at the above link, there is a check valve in the cap that allows air into the tank under vacuum. Fuel vapor is flowed into the canister when the tank is under pressure...iirc, the system maintains 2 psi positive pressure in the tank.
It enters through the check valve in the cap. That said usage of the word "vented" is not quite correct in this context.
Btw you're right: all new big rigs have cats these days. In fact it's now the law. I know because I'm a consultant involved with developing a new method of plasma cleaning them. It's expertise I have left over from a previous career. Unlike gas engines the cat is more to process particulates though.
edit: beat by the grumpy old man
Btw you're right: all new big rigs have cats these days. In fact it's now the law. I know because I'm a consultant involved with developing a new method of plasma cleaning them. It's expertise I have left over from a previous career. Unlike gas engines the cat is more to process particulates though.
edit: beat by the grumpy old man
soooo what should i do, i mean i dont have one, i dont know where they even go, but i have no gas smell or anything going on.... is it possible that someone already vented it through a hose in the fender well as earlier stated in some posts on this thread? yall got me kinda worried guys
Lol, that could be a problem alright.
OT: Picture an inductively coupled pulsed plasma in a quartz tube with cat attached to the end. Other cat end goes though a poppet valve into an inertial trap and then to a fomblin filled rotary vane with blower. Capacitance manometers at either end with several ratioing MFCs feeding the thing. If I told you the gases I'd have to kill you but it was a bitch to tune. Process developed by pre and post weighing of the cat. Until we got the chemistry right they were gaining 50 grams per run. Oops
OT: Picture an inductively coupled pulsed plasma in a quartz tube with cat attached to the end. Other cat end goes though a poppet valve into an inertial trap and then to a fomblin filled rotary vane with blower. Capacitance manometers at either end with several ratioing MFCs feeding the thing. If I told you the gases I'd have to kill you but it was a bitch to tune. Process developed by pre and post weighing of the cat. Until we got the chemistry right they were gaining 50 grams per run. Oops
jetjock;1007258 said:OT: Picture an inductively coupled pulsed plasma in a quartz tube with cat attached to the end. Other cat end goes though a poppet valve into an inertial trap and then to a fomblin filled rotary vane with blower. Capacitance manometers at either end with several ratioing MFCs feeding the thing. If I told you the gases I'd have to kill you but it was a bitch to tune. Process developed by pre and post weighing of the cat. Until we got the chemistry right they were gaining 50 grams per run. Oops
OHHH, now it makes more sense