carbon capture removal

[mfroese]

At the recent lower rainland meet, Snow and Mike had mentioned that you can remove the carbon capture tank (think thats what its called, see image) behind the right head light. I inspected my coil packs today and after taking that piping off a want to take that out. Can someone explain the steps involved in what to reroute and if anything gets plugged? Are there any down sides to removing this?

(not my engine bay, google image search ftw)
Sample engine bay with arrow

[love_boost]

the only line you need is the fuel tank vent line, a check valve or filter can be placed on the end of that line. i would hang it as far under the car to advoid gas smell, and you wont see it, the rest of the lines dont have to be there.


cleans it up real nice, i have done the same thing

[RyanGTS-T]

at the moment, I left the vapor return line to the gas tank in it's spot and my buddy just took a tire valve cap and stuck it on to the end. Right onto the hard line.

You can remove those hoses and plug off where they came from. Hard to explain since I don't have a stock manifold any more.

If you want to come out to our local Thursday night meet in Coquitlam I can remove it for you in the parking lot. I'll even bring some vacuum caps to plug everything off for ya

Or for the price of gas money, I can come to you.

[M13]

At the recent lower rainland meet, Snow and Mike had mentioned that you can remove the carbon capture tank (think thats what its called, see image) behind the right head light. I inspected my coil packs today and after taking that piping off a want to take that out. Can someone explain the steps involved in what to reroute and if anything gets plugged? Are there any down sides to removing this?

(not my engine bay, google image search ftw)
Sample engine bay with arrow

Hey, it's Mike.


Mine's been removed all the way back to the tank removing about 13 ft of hardline and a SECONDARY catchcan/check valve near the tank. I was removing HICAS so i figured why not while I was under there.

Steps to remove carbon canister can:

1. Locate all the hoses leading to/out of the canister, see where the sources are.

2. Start loosening the brackets that hold the canister. I think 4 bolts and removable with 10mm socket.

3. To make your life easier, just cut the hoses that attach to the can. You won't be needing these lines.

4. Trace the lines you just disconnected. You will see two hard lines running along the RB20's "L" pipe above the coil pack. The hardlines are attached by two 10mm bolts. Loosen them off too.

5. The hardline has two soft hoses leading to the plenum for boost/vacuum source and one to the BOV. Disconnect both and take note of their locations.

6. Remove hoses from plenum and BOV. Remove the hardline completely and reroute the BOV hose by directly attaching a vacuum hose from the plenum to the BOV.

7. You now have one outlet that is exposed. Plug this up. Give the entire thing a coat of a "look over" to make sure everything is fine.

8. Start car and see what your vacuum is at / check for vacuum leak.

9. Dispose the junk you just removed into trash.

DONE.

[mfroese]

Well the hoses have already been removed and I'm just putting the coil packs back in today. My BOV line was long enough to reach the intake but the 2 hoses going to the carbon tank, do you just put a vacuum line between both of them on the intake to recirculate the air?

edit: ah you posted same time I wrote that, I'll cap them off.

[M13]

Well the hoses have already been removed and I'm just putting the coil packs back in today. My BOV line was long enough to reach the intake but the 2 hoses going to the carbon tank, do you just put a vacuum line between both of them on the intake to recirculate the air?

edit: ah you posted same time I wrote that, I'll cap them off.

You could just loop them together too.

I have a boost gauge that is fed straight from one of the lines.

[gunr]

what dose this thing do? why take it out?

[Turismo]

I just removed mine out of my GTR, where does the large hose off the bottom run to? It leads into the frame just under the canister, can't trace it after that, is it just a drain or something? The diagram in the FSM doesn't show this. i didnt' want to start a new thread in GTR tech since youre already on the topic.

[M13]

I just removed mine out of my GTR, where does the large hose off the bottom run to? It leads into the frame just under the canister, can't trace it after that, is it just a drain or something? The diagram in the FSM doesn't show this. i didnt' want to start a new thread in GTR tech since youre already on the topic.

it's just a vent. Pretty half assed looking and once it's out with the canister, there won't be anything in the frame to trace.

Hope that helps.

Also, if you wanna make the engine bay even cleaner, follow the line that goes back to the tank and remove lines also.

[mfroese]

A carbon canister takes the gases from the fuel tank and allows them to turn back into a liquid. This happens on hot days when the fuel in your tank expands and heats up.

I havent fully removed it fully yet, just removed the intake breather lines going to the intake manifold. I didn't mind the tank itself but didn't like the lines crossing my intake / intercooler piping and going across the coil packs. As a precaution I have been recommended to use a one-way filter on the line so that air can escape but not enter the line.

Worst case I've been explained it as is the fuel tank *could* empty out on a very very hot day but is unlikely, using that filter prevents that I believe. The heat required for that to happen is once in a lifetime.

.... right?

[MikeRWK]

So theres no gain just a cleaner engine bay?

[mfroese]

Correct. It is only a gas vent for your fuel tank's vapors. No performance gain will be achieved doing this. This will not add +10 rwhp.

The one way filter in the line to the fuel tank allows air to enter but not gases to escape on a hot day. I don't believe it will pressurize your tank in a manner it could explode. It's simply a vapor trap that is pressurized by lines coming from your intake manifold. Both lines traced back to the intake manifold near cylinder 6 on a GTS-t manifold. I hooked my BOV vacuum line to the intake directly and looped the carbon canisters lines together.

[M13]

A carbon canister takes the gases from the fuel tank and allows them to turn back into a liquid. This happens on hot days when the fuel in your tank expands and heats up.

I havent fully removed it fully yet, just removed the intake breather lines going to the intake manifold. I didn't mind the tank itself but didn't like the lines crossing my intake / intercooler piping and going across the coil packs. As a precaution I have been recommended to use a one-way filter on the line so that air can escape but not enter the line.

Worst case I've been explained it as is the fuel tank *could* empty out on a very very hot day but is unlikely, using that filter prevents that I believe. The heat required for that to happen is once in a lifetime.

.... right?

I could see gas vapours leaving the tank, but the amount would be so miniscule. We drive skylines, not prius.

My line has been eliminated all the way to the tank itself and I have a filter there to prevent moisture/dirt/particles from entering. Gas vapours leave to allow thermal expansion.

[MikeRWK]

some of the subaru guys use collapsible lines that under boost well collapse.here's his reasoning:

It eliminated the heptane insoluble portion of the evaporation residue of motor gasoline from sticking to your turbo while it's hot at wide open throttle. No HP gains, but extends the life of your engine by removing gum from intake tract during the highest rate of impurity thermal bonding.

[m_melen]

i'm pretty sure it's called a charcoal canister, but it might have other names
once fuel vapors build up enough it purges (if it works!) into the intake i believe