Charcoal Canister / EVAP Install / Solve Gas Smell

[Bronco_007]

There’s a couple on eBay. Try a u pull if there is one by you. I just bolted mine to the firewall without the bracket though…

No kidding?! Ha!

 

[Bronco_007]

There’s a couple on eBay. Try a u pull if there is one by you. I just bolted mine to the firewall without the bracket though…

Got any photos where you mounted it…? My firewall is pretty full.

 

[CopperBronco]

Here’s one used @Bronco_007
https://www.ebay.com/itm/3255214769...d=link&campid=5335857059&toolid=20001&mkevt=1

 

[CopperBronco]

Photo not handy right now but just mounted up near front hood vent hole/firewall… had to cut bracket to mount there flush. Or as other guy said, just make one… just don’t want to come loose .

 

[billh1289]

Got any photos where you mounted it…? My firewall is pretty full.

Surprised to find that I don’t have one on my phone. I’ll grab one later tonight.

 

[billh1289]

Got any photos where you mounted it…? My firewall is pretty full.

 

[Bronco_007]

Passenger side?

 

[billh1289]

Passenger side?

Yep

 

[DirtDonk]

You can literally mount it anywhere that’s as high up as you can get it.
At least one member here mounted his in the corner on the driver side. Most mount them where that last picture shows, and that’s approximately where Ford mounted it in 76 and 77.
The top screw went through the top lip at the pinch weld, and there was a small bracket welded on lower that caught the lower edge of the tank.

A friend mounted his up in the front passenger wheel well because his firewall was full of electronics.
Works great, is out-of-the-way and well protected behind his shock hoop.

 

[Bronco_007]

Brilliant, all. Much obliged!

 

[CopperBronco]

@Bronco_007 here are photos of mine… both engine bay and rollover valve. My rollover valve should be more secured with a bracket to floor pan, but it’s been a pavement princess… need to bracket it up sometime…

 

[Bronco_007]

@Bronco_007 here are photos of mine… both engine bay and rollover valve. My rollover valve should be more secured with a bracket to floor pan, but it’s been a pavement princess… need to bracket it up sometime…

Super helpful, friend. Thank you.

 

[tirewater]

Super helpful, friend. Thank you.

Not shown here is the connection from the charcoal canister to the carburetor. The capped connection would run from the canister to a vent on the float bowl.

 

[CopperBronco]

Not shown here is the connection from the charcoal canister to the carburetor. The capped connection would run from the canister to a vent on the float bowl.

Mine actually runs from canister to air intake to recycle fumes, shown above, but this would work too! The capped connection on mine is for a PCV system which I don’t have.

 

[Jarrett h]

 

[DirtDonk]

The bowl vent connection was for introducing more fumes INTO the canister. Not for returning them to the engine.
The return fumes were always (pre-computer) re-introduced to the engine via the air cleaner housing.
Bowl vents started appearing around '73 or so, and continued for the most part as long as there were carburetors.

One of the biggest problems in replacement carbs however is that it seems like you almost never get the correct carb for a later model engine. Most of the ones we see reported about don't have a bowl vent.

Paul

 

[Bronco_007]

@Bronco_007 here are photos of mine… both engine bay and rollover valve. My rollover valve should be more secured with a bracket to floor pan, but it’s been a pavement princess… need to bracket it up sometime…

Is the rollover valve in the rubber line between the hard line on the frame and the canister?

 

[CopperBronco]

Is the rollover valve in the rubber line between the hard line on the frame and the canister?

Yes! The rubber line goes from gas tank, run the line up the frame, somewhere between tank and canister install the rollover valve. It should ideally be above the gas tank a bit, but just depends on type of valve… some people use check valves as well I believe. @DirtDonk keep me honest here! You’re the guru!

 

[DirtDonk]

Ha ha ha! Thanks, but not really a guru of roll over, anti drain back, flapper, one way, or any other type of valve that I know of.
I think James Roney had a couple of big discussions about the differences while talking about different gas tanks.

I’ve never pulled an old 76 or 77 valve apart to see just how it works. But it kind of looked like a plastic float or something was enclosed in it the plastic case.
Not sure how the DeLorean model works either.

But as far as I know, you’re correct in your statements. Wherever you can mount it up high as it is convenient seems like the best practice. Valve or no valve, higher is better.
Although I’m sure there are some valves of particular types that might work better when exposed to liquid directly, I just don’t think they’re the type we would want to use.
So I’m still in the mount it higher camp.

 

[Bronco_007]

Ha ha ha! Thanks, but not really a guru of roll over, anti drain back, flapper, one way, or any other type of valve that I know of.
I think James Roney had a couple of big discussions about the differences while talking about different gas tanks.

I’ve never pulled an old 76 or 77 valve apart to see just how it works. But it kind of looked like a plastic float or something was enclosed in it the plastic case.
Not sure how the DeLorean model works either.

But as far as I know, you’re correct in your statements. Wherever you can mount it up high as it is convenient seems like the best practice. Valve or no valve, higher is better.
Although I’m sure there are some valves of particular types that might work better when exposed to liquid directly, I just don’t think they’re the type we would want to use.
So I’m still in the mount it higher camp.

How about this? Haven’t made it permanent yet. Wanted to hear opinions first…