Hi, A few decades ago I replaced the V6 in my psuedo-street-machine with a more muscular V8. At the same time, all the smog equipment went with old the engine. Here we are in 2021 and I’m wondering about installing a new fuel vapor canister and vacuum control valve. Given that the car only sees …

I’ll give you some additional design considerations; Was there a V8 option for your car? Was the evap system different for the V6 and V8? Are the factory parts even available for this mystery car? (you don’t tell us ANYthing about the make model or year) Do you have the technical ability to design…

Thanks for your reply Mustangman. To answer your questions: yes, the 350 small block was an option on the 1980 Camaro although the emissions systems were very similar on the V6 & V8 builds of that year, the only parts that are still with the car are the PCV components no, I’m not planning on desi…

[image] tech.box42_172242: did anyone do any testing to prove the evaporator systems continued to perform day after week after month after month of parking without the charcoal becoming saturated - and that it just keeps on absorbing? My guess is probably not … The cars themselves did. A satu…

[image] Mustangman: A saturated canister will cause the dreaded short-click on the fuel filler at the gas pump (been there, done that!). Interesting, the newer emissions systems sure are a lot more complicated than the ones from the '70s! To get a better handle on what you were talking about…

Then just return it to 1980 specs for a V8 if you can obtain the parts. Use the factory diagrams. You might have to substitute parts for those that are not available anymore. You have some research ahead of you to accomplish this.

Thanks for the feedback, but as indicated earlier, I’m only interested the early '70s version - adding the vapor canister and control to the existing PVC.

This car did not have a vapor canister in the early 70s. Not until 1975. I don’t know any that did as I don’t believe that was a requirement in the early 70s. As I said, if that is what you want, you have some research to do.

If I felt compelled to control fuel tank vapor I would connect a hose between the tank vent port and a fitting on the air filter housing.

[image] Rod-Knox: If I felt compelled to control fuel tank vapor I would connect a hose between the tank vent port and a fitting on the air filter housing. But that wouldn’t handle the long periods when the car is parked.

Vapor canister on vintage cars

Maintenance/Repairs

Tester June 20, 2021, 2:25am 7

Tester

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Vapor canister on vintage cars

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