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Charcoal cannisters
https://www.ausmini.com/forums/viewtopic.php?f=2&t=92293		 Page 1 of 1
Author:  mini_man_90 [ Sun Apr 03, 2016 8:57 pm ]
Post subject:  Charcoal cannisters
Can anybody clear up a couple of questions for me about the charcoal cannister on a clubman?

My mini is running a morris 1500 motor instead of the standard motor. It's all going to need engineering before rego anyway, so is there a need to run the charcoal cannister for compliance or can it be engineered to run without it?

If it needs it for compliance can people please tell me what hoses go where? Cannister has 2 pipes on top and 1 on bottom. I have no issues running it. Just curious to know what the legalities are.
Author:  gtogreen1969 [ Sun Apr 03, 2016 9:05 pm ]
Post subject:  Re: Charcoal cannisters
Depends what year your car is. The ADR covering the charcoal canister came in around 1976. I can't recall off the top of my head the exact ADR or date sorry.
Maybe ADR 27a 7/76
Author:  gtogreen1969 [ Sun Apr 03, 2016 9:47 pm ]
Post subject:  Re: Charcoal cannisters
The 2 connections on the top would be inlets. One from the fuel tank and the other from the rocker cover.
The bottom would be the outlet after it has passed through the charcoal. This goes to the carby above the throttle butterfly or airbox. You could run it to the manifold but it would need a PCV valve.
Author:  mini_man_90 [ Sun Apr 03, 2016 10:03 pm ]
Post subject:  Re: Charcoal cannisters
I currently have a hose running from the tappet into the intake pipe for the carby setup that I'm running.
So I can run a hose from the tappet to the cannister along with one from the fuel tank. Then run the bottom hose into the intake pipe.

Just need to work out where the breather hose for the fuel tank currently hides itself.
Author:  winabbey [ Sun Apr 03, 2016 10:03 pm ]
Post subject:  Re: Charcoal cannisters
Here's the link to ADR's and their meaning. You'll see the first mention of Engine Emission Control is ADR26 from 1/1/72, then ADR27 and ADR37.

https://infrastructure.gov.au/roads/mot ... _adrs.aspx

Be aware that the ADR prescribes the acceptable pollutant levels (etc.). It does not say you need to fit a charcoal canister. The canister and other components are BMC/Leyland's solution to meet the relevant ADR at that time. I have no knowledge of what emission control testing is done when you present a car for registration today. Has someone been through this recently?
Author:  Dutchy1978 [ Sun Apr 03, 2016 10:11 pm ]
Post subject:  Re: Charcoal cannisters
I have an SPI mini and the top hoses....one goes to the fuel tank breather hose and the other to the purge valve then to the inlet manifold. The bottom hose just goes to the bottom of the car as an outlet/overflow
Author:  gtogreen1969 [ Sun Apr 03, 2016 10:14 pm ]
Post subject:  Re: Charcoal cannisters
mini_man_90 wrote:

Just need to work out where the breather hose for the fuel tank currently hides itself.


It pops up next to the accelerator cable below the brake master cylinder.
Author:  Tim I [ Sun Apr 03, 2016 11:35 pm ]
Post subject:  Re: Charcoal cannisters
Charcoal canisters were common as part of the control system for evaporative emissions. Evaporative emissions were not controlled until the introduction of ADR 27a which applied to vehicles manufactured on or after 1 July 1976.
I note that you listed your car as being 1975 which, if correct, means it was not required to comply. So if yours is pre-76 and had the canister fitted it is likely that BMC/Leyland were on top of it early, well before it was required, which was not uncommon for manufacturers.

The 'test' these days for evaporative emissions compliance on an ADR27a vehicle would likely be a visual, if they check it at all. Truth is, most inspectors would be unlikely to know what to even look for... and the same would probably apply to most mechanics these days.

My advice would be to check the date on the compliance plate and if it is earlier than 1 July 1976, leave it off as it is not required even if fitted from new.
Author:  Phil 850 [ Mon Apr 04, 2016 10:10 pm ]
Post subject:  Re: Charcoal cannisters
My understanding of engine swaps is that the vehicle must comply with either the emission standards that were in force at the build date of the vehicle OR the date of the engine manufacture, whichever is the LATEST !.
So, 1960s car with 1970s engine = 1970s emissions.
1960s car with 1950s engine = 1960s emissions.
Author:  Tim I [ Mon Apr 04, 2016 11:52 pm ]
Post subject:  Re: Charcoal cannisters
Phil 850 wrote:
My understanding of engine swaps is that the vehicle must comply with either the emission standards that were in force at the build date of the vehicle OR the date of the engine manufacture, whichever is the LATEST !.
So, 1960s car with 1970s engine = 1970s emissions.
1960s car with 1950s engine = 1960s emissions.

I know that this has been claimed to be the case for a long time, but I think it is just what the NSW RTA/RMS have decided to apply as a condition of approval, but certainly is not the case across Australia.
ADR's apply based on the date of manufacture of the vehicle. Fitting a later model engine does not change the date the vehicle was built.

VSB 14, a supposedly National document, reflects that in that it states:
"Generally when an engine of different design is substituted, the gaseous emission control system of the donor vehicle, from air intake right through the engine to the exhaust outlet, should be utilised as a package."
(note the word 'should', which is defined in VSB14 as "Indicates a recommendation."

The next paragraph in VSB14 states:
"A modified vehicle must continue to comply with the ADRs applicable to that vehicle, including exemptions allowed for in the AVSR."
Author:  Phil 850 [ Tue Apr 05, 2016 10:01 pm ]
Post subject:  Re: Charcoal cannisters
Thanks Tim I
That's handy to know.
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