Stuman

Hi everyone, I am cleaning up my engine compartment on my 89 Z28 and wanted to know if eliminating the purge canister and lines would cause a venting problem with the fuel tank or any other problem. Thanks,

RBob

iTrader: (1)

The biggest problem is that your garage will smell of fuel, really bad. As for venting issues, all depends what you do with the open vent line.

For me, I've put the CCP system back into several cars I've owned.

Another example is when I was doing VE Learns on my '92. Disabled the CCP purge in the calibration, did the VE Learns, then forgot to re-enable the CCP purge.

Once the canister was saturated I was getting strong fuel fumes in the interior while driving the car. So bad that I pulled over twice and looked for fuel leaks.

Once it dawned on me about the CCP being disabled, I enabled it and the fumes went away. This also means that fuel mileage increased, as that fuel was being burned, not vented to the atmosphere.

Can always move the canister to under the car, common practice.

RBob.

ULTM8Z

RBob is right.

Even with an aftermarket EFI tank in my '71 (and their supplied vent valve), I still incorporated the factory 3rd gen CCP system (including that little mushroom valve) into the tank evap set up.

I just couldn't get rid of the fuel smell as well as the pressure build up in the fuel tank while driving. Running the OEM evap system solved all those problems.

Abubaca

iTrader: (3)

I switched to Holley EFI, and they don't have a way to trigger the system. Technically I think you could configure an output to do it, but that's not the point. I found my way to a Factory Five forum where several guys simply build a carcoal filter and attach it to the open line. Little bit of PVC pipe....some fittings....fish tank charcoal...zip ties and spray paint....I have a little pipe bomb lookin' filter about 6 inches long, right in the fend space by the horns.

No smell.

That being said, while it still worked, I fabbed up some quick brackets and relocated it BELOW the tray, right behind the parking light. Had to buy a little bit of vacuum line and extend a few wires, but overall easy peasy. Outta sign and outta mind.

turd_gen

I don't want to hijack the thread, but what should I do with my vent? The previous owner tore it off halfway and now it sits open under the car. I can't drive anywhere without reeking of gas afterwards. I don't know what the stock system looked like (LG4 with M4ME carb).

Drew

iTrader: (58)

This thread and the other recent thread about deleting the cat, threads about deleting air pumps, just make me scratch my head. It's 2018 and people still take the time to delete things that really don't hurt anything, but keep the car from smelling like a chemical mess. I understand because when I was 17, it didn't make sense to have a pump blowing air in the exhaust, or a Folger's can hooked up to a rat's nest of hoses. But now, I kind of like my cars to not smell like ***, or sound like ***. Can't say that anything looks worse than most of the cobbled "delete" jobs I've seen. Most of the time when something is removed it's just a huge red flag that some Gomer has been fouling up the car.

Abubaca

iTrader: (3)

Drew, you should be on some of the thirdgen pages on Facebook. It'll blow your mind the things people are still doing to these cars. It's like taking a stroll down hillbilly lane!

NoEmissions84TA

iTrader: (1)

And check this out: https://www.thirdgen.org/forums/tech...ml#post6139987

Drew

iTrader: (58)

I tried. Lord knows, I tried. That's precisely why I'm not on any thirdgen or Camaro pages on Facebook. It's like watching the Hindenburg disaster in real time. Or a carnival freak-show, all those shows on TLC with the midgets or 17 kids, horders, and morbidly obese folks...

Stuman

...Thanks for the input guys... ..

Go Blue

Plus, if you disconnect the canister and just leave the line from the tank laying there, you're allowing fuel vapors loose around your hot engine and praying that it doesn't spark a huge flame that goes straight back to your gas tank. That's a risk i'm not wanting to have. As RBob said, put it underneath where it sits now and you'll never see it. A lot of guys have done that

Stuman

It sounds like that is the best idea to keep it fuctional but extend the hoses and wires to move it underneath where it sits now. That would clean up that front left corner.and keep the fumes under control.

Stuman

Just a update. I moved my purge cannister under where it used to sit. Looks good in that corner now and everything is still hooked up. I am working on cleaning and painting the engine compartment then starting on assembly of my 383 and T56. Original cannister mounting spot
Cannister mounted underneath

Go Blue

Did the wires and vacuum hose reach or did you have to get new hoses and extend the wires?

Stuman

I did have to extend the wiring harness. I added a section about a foot long to both wires used connectors and heat shrinked and put into plastic wiring cover. I will also have to extend the vacumn lines, I am going to the parts store today.

mmadden55

All that stuff was gone on my car when I got it except for the metal vent line, I am going to eventually use it as a fuel return when I go FIT, but right now I just ran a line into the air cleaner like they use to do.

T.L.

I want to do the Canadian diagram, but it's confusing. Which hose goes to the fuel tank? The middle?...

NoEmissions84TA

iTrader: (1)

If you are talking about the hoses on the Canadian canister, then YES, the middle one.
Notice that the canisters are different.
Here is the diagram I came up with for my car. It might simplify things for you.

T.L.

Thanks...

W.E.G.

Where did you put the cannonball when you moved the canister into the cannonball’s spot?

Stuman

I guess you mean the vacumn reservoir for the cruise control. I simply moved it over to one side to make room for them both and reatached it. It weighs almost nothing.

T.L.

Is the Canadian canister available new?...

Go Blue

What i'm curious about is how the vapor canister works upside down? I know it's vapor and would be lighter than the charcoal, but there's still liquid in vapors. I know i've heard/read of others on here doing it, but something about the canister being upside down doesn't sit 100% ok with me. Has anyone had any issues with it being upside down??

jczoka

jczoka

I’ll try and post a pic from a service manual

Go Blue

I knew there was something more to it especially when I saw his picture of it upside down. Thanks jczoka for confirming that!

Stuman

Yea, please post the info about the right side up only canister. I had never tried it but had heard it would work upside down. You would not think that the vapor load from the gas tank would ever get dense enough to actually carry liquid. Please post that that info if that is true. With a bracket it could be mounted right side up under there but was just easier to flip it.

jczoka

jczoka

Stuman

Thanks for the canister diagram.

brando278705

iTrader: (1)

RBob, where did you put your canister under the car at? Especially after the discussion has been said that upside down will not work?

RBob

iTrader: (1)

I didn't move it, it is in the stock location.

RBob.

Go Blue

I moved mine to right below where it used to sit and I just got longer vacuum hoses and used zip ties to attach it to a brace and it sits right next to the vacuum ball for the cruise control. Sorry. I don't have a pic of it right now but i'll try to get one in the next couple of days. So far, it works fine and no odors at all.

Stuman

Thats the same location I put mine at but used the original theaded eyelets, just popped them out and snapped them in from the bottom and bolted it up. After our discussion on position I will turn it right side up and reattach. It makes that front left corner cleaner looking. I am cleaning and painting my engine compartment now. I an partially done.

Go Blue

I ran the hoses straight down through the holes that I drilled since I didn't want to mess with extending the wiring. Monday, I also bought a $8 universal coolant overflow tank from Auto Zone and mounted that just in front of the passenger front tire and just behind the brace and threw out the old coolant overflow tank and cleaned up that side of the engine bay. I have before pics in my pictures but I still have to take pics of the coolant overflow tank change and the charcoal canister move as the engine compartment finally looks a lot less cluttered now.

Stuman

Cool, I was going to get one of the black aluminum overflow tanks from ebay and mount it in that front right corner to get rid of the large OEM tank bit I like the idea of putting it down below like the other side!

Go Blue

I'll try to post some pics in the next day or 2 of both sides top and bottom.

Go Blue

Here are some pics from underneath my car looking at where I put the charcoal canister (under the driver's side stock position) and the coolant overflow tank (under the battery on the passenger side).

brando278705

iTrader: (1)

TTOP350

iTrader: (8)

I have my canisters hanging on the back of the front bumper support. Had to be moved for SLP air box and I didn't want to put it where SLP wanted to move it. Which turns out is the same place SLP puts it on the firehawks.

Drew

iTrader: (58)

Would you be so kind as to post a photo?

TTOP350

iTrader: (8)

Sorry for the krap picture, oddly all I could find

mmadden55

I removed mine and ran a line from the vent tube into the air cleaner, the activated charcoal in those things is shot after about five years so it is really just dead weight, unless you have to have it for smog.

Go Blue

mmadden, is your car a TBI or carbed or TPI? I'm not sure there's a good port on a TPI car to run that into unless you figure out how to run it into the PCV hose on the passenger side of the throttle body. Do you have a pic of how you ran that?

mmadden55

It was electronic carb it is now 600 cfm holley on a performer intake with an edelbrock air cleaner , if you do not have a vac port on the air cleaner you can use it easy to make one. Buy a piece of brass tube from the hardware store or hobby shop that fits snug inside the rubber hose you are using, drill a hole the right size for it in a convenient place in the under side of the aircleaner , solder the tube in connect hose. Or you can press fit a plastic fitting or epoxy a plastic fitting from Auto parts store but you get the idea.

Drew

iTrader: (58)

Aww that makes it much more clear. For some reason I couldn't visualize it. Weird since one car is fully assembled and the other is fully disassembled, I just couldn't process where and how that'd work. Seeing the bracket makes it more obvious. Great pic!

Now if only there were pics of the Firehawk style battery box/cables/etc... lol Had a few on file, got lost to ransomware... If things go according to plan, both SLP cold air setups will be on cars in the near future. On a related note, the bracket that the air can and charcoal can sit on, it's removed completely with the SLP cold air setups, yes? I could see it working either way, but neglected to try it while the bracket wasn't hidden in a box somewhere...

Drew

iTrader: (58)

On TPI the vacuum port to the charcoal can is the 1/4" port on the passenger's side below the PCV port and above the coolant passage/IAC.

Drew

iTrader: (58)

Weird side note... The charcoal can on my Mustang had to go to make room for intercooler piping. I just tucked the vent line from the tank inside the fender, because F it, it's the Mustang. Granted I've never had the car in a garage, but never get a hint of gas smell. Really the only smell is standing behind it while it's running (no cats). I suppose the EPA will have to just blow me, because all my gov't mandated ventless gas cans have vents I added too... And I'm a gross polluter with my long term relationship with Carb Cleaner in spray cans, and when I really feel frosty I spread lead across the Kansas prairie, and I'll vent all the chlorofluorocarbons I want... Cry me a river, Earth Mother.

mmadden55

On a TPI car I would just plumb it into the air intake ahead of the throttle body, may be a vac port on the Throttle body you can use if you have one that is not being utilized I wouldn't tee off an existing line, it would likely cause issues.

TTOP350

iTrader: (8)

I sent Chris (PurelyPMD) my NOS charcoal canister bracket and he had extras made of it and the belt guard for dual cold air kits.
Yes, the lower mounting bracket can/should be removed.
I too lost a bunch of very detailed pix of firehawks I've collected over the years to ransomware. (dam u coupons.com) I do have a few of the Hawks cable routings and such but I'm holding those till I'm closer or done with my project.. (Lot of research, travel and money spent to get them!! )