Charcoal Canister and carb ( can't find anything on using Edelbrock 1406 )

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BBronco

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B.C Canada

• Jun 21, 2013

• #1

Did tons of searches, got it all figured out yet one thing. There is 4 ports on my canister (see pic ) Little one to gas tank, Large far right one to air cleaner, other Large one in middle mushroom capped, and the medium one left is suppose to go to your carb bowl vent. is this correct?

now for my question, the edelbrock 1406 doesn't have a bowl vent as it vents through the air cleaner. Does this mean I plug, or mushroom cap, or do what with that Medium sized port left over.

 

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Viperwolf1

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• Jun 21, 2013

• #2

For that type of canister, the smallest port goes to vapor from tank. Next bigger one is the purge (gets sucked into air cleaner). The 2 large ports get mushroom caps to allow fresh air in.

 

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BBronco

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• Jun 21, 2013

• #3

Okay sounds good, if I am using that separator bottle from behind the drivers seat there, does that hook to the canister or the canister directly to gas tank vent like you said. I have read "Plastic Bottle Under Panel behind Driver's Seat " and it seems as if the bottle is connected to the canister instead of the tank.

 

Viperwolf1

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• Jun 21, 2013

• #4

BBronco said:

Okay sounds good, if I am using that separator bottle from behind the drivers seat there, does that hook to the canister or the canister directly to gas tank vent like you said. I have read "Plastic Bottle Under Panel behind Driver's Seat " and it seems as if the bottle is connected to the canister instead of the tank.

Click to expand...

If you have the bottle use it. Bottle connects to tank(s), canister connects to bottle. If you mount the canister high enough you don't need the bottle but it would be a good idea to add a roll over valve in that case.

 

MarsChariot

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• Jun 21, 2013

• #5

here are a few diagrams that may help, if you have the frame mounted charcoal cannister.

 

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BBronco

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• Jun 21, 2013

• #6

Wow thank you very much, those diagrams are great. Hope someone can find use for this carb thread in the future. Thanks a bunch guys

 

DirtDonk

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• Jun 23, 2013

• #7

Personally, if you already have one of your large fittings connected to the air cleaner housing, I would just cap off the medium sized one instead.
Even though the canister you're using is the later '76/'77 style (as well as many other vehicles) and in those years would have used the bowl-vent tube connector, the Broncos of previous years would have just used one of the large ones to the air-cleaner and called it a day.

Is yours an early '76 by any chance? If not, then perhaps a PO at some point had just replaced the early frame mounted one with the later one and plumbed it similarly.

Paul

 

DirtDonk

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• Jun 23, 2013

• #8

Oh, and if you ever need to replace the carb and want to retain all the functionality of the stock setup, there is, or at least was an Edelbrock model that had the bowl vent tube.
I have one on my 400, but purchased it awhile ago, so don't know if it's still available.

Paul