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> Over Flow Tank and Charcoal Canister 914-6
rgalla9146
post Oct 13 2017, 11:10 AM
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It is not an east coast / west coast thing ?
Are there two versions of early compliance stickers ?
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gms
post Oct 13 2017, 11:21 AM
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here is a picture of one of my sixes, it has the holes for the hoses.
It was delivered in LA CA so perhaps it is a CA thing?

914 043 1277





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maxwelj
post Oct 13 2017, 11:40 AM
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A little late to the party, but my 70/ 6 (1088) did not have a charcoal canister as delivered. It was US spec, but delivered in April 1970 in Europe. Maybe it was a California thing
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Mike Fitton
post Oct 13 2017, 01:18 PM
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QUOTE(gms @ Oct 13 2017, 09:21 AM) *

here is a picture of one of my sixes, it has the holes for the hoses.
It was delivered in LA CA so perhaps it is a CA thing?

914 043 1277



Well I have the 2 holes and they still have the rubber grommets in them so definitely the canister was installed at one time. Mine was also an LA delivered car.
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toolguy
post Oct 13 2017, 07:38 PM
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Since the recovery system is an EPA requirement, whatever the smog / emissions requirement for 1970 would have dictated which vehicle had the tank, filter system. .
I know Calif required them, but what about other states? I do know the
emissions sticker on the fan shroud states the motors comply with New York requirements, anyway mine does.
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Racer
post Oct 13 2017, 08:18 PM
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QUOTE(toolguy @ Oct 13 2017, 09:38 PM) *

Since the recovery system is an EPA requirement, whatever the smog / emissions requirement for 1970 would have dictated which vehicle had the tank, filter system. .
I know Calif required them, but what about other states? I do know the
emissions sticker on the fan shroud states the motors comply with New York requirements, anyway mine does.


Well, related from a 914/6 question would be.. did the 911's have them as well for 1970? Did they have them as early as 1969? If so, then then the whole Porsche lineup would have had them for 1970.

However, if this was a reaction to the US passing the Clean Air Act in 1970, then it would make sense it could have been a midyear improvement, and conceivable a dealer "retro- active" installed requirement for later cars that sat on the lot? Just a thought.

I also imagine it was quite popular back then to remove "emissions" related things.. in the name of better performance and finding cars that haven't been "molested" for 47 years isn't easy...
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mskala
post Oct 13 2017, 09:09 PM
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Only 1 hole in that area, for the radio antenna.

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pete000
post Oct 13 2017, 09:58 PM
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Correct me if I am wrong, but did the euro spec sixes not have the canister and chamber?
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gms
post Oct 14 2017, 11:02 AM
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QUOTE(mskala @ Oct 13 2017, 10:09 PM) *

Only 1 hole in that area, for the radio antenna.

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Mark, is there a bracket on the fuel tank for the canister on your car?
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rgalla9146
post Oct 14 2017, 06:08 PM
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QUOTE(gms @ Oct 14 2017, 01:02 PM) *

QUOTE(mskala @ Oct 13 2017, 10:09 PM) *

Only 1 hole in that area, for the radio antenna.

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Mark, is there a bracket on the fuel tank for the canister on your car?


Lets try this by VIN
My 1095 car has vapor tank and charcoal canister ( but no extra holes or plumbing to rear) Rochester NY delivery
My car 2567 has tank, canister and plumbing to rear. Pasadena Ca. delivery.

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mskala
post Oct 14 2017, 08:10 PM
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QUOTE(gms @ Oct 14 2017, 01:02 PM) *

Mark, is there a bracket on the fuel tank for the canister on your car?

Yes. I never thought about it before. That whole area looks untouched.
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SKL1
post Oct 14 2017, 09:23 PM
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Wish I could go out in the garage and look at my '71 6, but I foolishly sold it many years ago... almost 100% sure it had the overflow and cannister though.
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gandalf_025
post Oct 15 2017, 10:51 AM
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My car, #619 never had the canister.. The bracket is
on the gas tank, but the only hole in the fender is for
the antenna.
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Speedo
post Mar 29 2021, 09:07 AM
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Great replies guys. Unfortunately when I disassembled my car, I thought it was going to be a quick resto and didn't bother documenting the process. Had I done so I would have pics to support my questions. I kept the parts together as I took the car apart, and the gas tank/filler and expansion tank stayed connected. Didn't occur to me that the attach point on the gas tank for the charcoal canister...didn't necessarily mean that a canister was ever attached. Further confusing was the fact that I have a couple charcoal canisters up on a shelf with 911 parts, but no attachment bracket.

I just helped my son run new plastic and cloth lines on his 72 1.7 from the charcoal canister to the engine compartment, and assumed that I was going to have to do the same...but upon investigation, realized that I am missing the holes in the driver's inner fender. I'm thinking that the gas tanks were the same (with the canister fittings) for both the with and without scenarios...but the inner fenders were different. I see from PET that there were two different expansion tanks, and they look to be "plumbed" differently. I have the one with the notch for the filler neck that has the two small 3mm barbs for the cloth lines. I'll look at the schematics in PET and see what goes where. One question I have is for the 3mm line coming out of the expansion tank, heading to where the canister would have been positioned. Lacking a canister, where does this connect? To the small barb on the plastic Y connected to the larger clear overflow tube that exits out the bottom of the car?
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Speedo
post Mar 29 2021, 09:11 AM
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QUOTE(mskala @ Oct 13 2017, 07:09 PM) *

Only 1 hole in that area, for the radio antenna.

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And this begs another question before I install the gas tank...for the antenna wire that does come through the driver's inner fender, where does it go through the dash? I thought I had used up all of my holes in the dash, but that antenna wire needs to find the back of the radio somehow?
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wonkipop
post Mar 29 2021, 05:39 PM
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QUOTE(Racer @ Oct 13 2017, 08:18 PM) *

QUOTE(toolguy @ Oct 13 2017, 09:38 PM) *

Since the recovery system is an EPA requirement, whatever the smog / emissions requirement for 1970 would have dictated which vehicle had the tank, filter system. .
I know Calif required them, but what about other states? I do know the
emissions sticker on the fan shroud states the motors comply with New York requirements, anyway mine does.


Well, related from a 914/6 question would be.. did the 911's have them as well for 1970? Did they have them as early as 1969? If so, then then the whole Porsche lineup would have had them for 1970.

However, if this was a reaction to the US passing the Clean Air Act in 1970, then it would make sense it could have been a midyear improvement, and conceivable a dealer "retro- active" installed requirement for later cars that sat on the lot? Just a thought.

I also imagine it was quite popular back then to remove "emissions" related things.. in the name of better performance and finding cars that haven't been "molested" for 47 years isn't easy...


think you might be on the money.
govt. laws kicked in for calendar year?
cars are on model year spanning calendar mid years.
might have kicked in with US cars after end of dec 69?

fair point too as to what constitutes an unmolested car.

as an aside, we've been delving into the can/hose layout in 74 1.8s in originality forum.
have worked out somewhere along the line the plumbing to the cans got changed, at least in the 4 cylinder cars. not just to with running hoses to can in front or shorter hoses to can in engine bay, but changed which hose went into which end of can. porsche definitely had a policy of how to plumb this system to the fan (in early 70s 911s) that was the opposite of how VW plumbed their cars (bugs, buses, 411s etc). the vo-po is interesting territory........ as its neither or both?
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fixer34
post Mar 29 2021, 10:04 PM
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March '70 -6. Non-CA car as best I can determine. Never had the charcoal canister; no mounting brackets/hoses/holes. Not even a radio antenna hole-on mine it is on the passenger side cowl so the cable comes down right by the washer tank.
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wonkipop
post Mar 29 2021, 10:17 PM
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@fixer34

must be a CA thing then?
but even then it might have been CA only for 70 cal. year.
CA has some special privileges doesn't it in relation to smog laws. they can introduce air pollution laws earlier than other states. recalled reading about it last year when former pres. trump proposed taking away the right and bringing CA into line with other states for uniform introduction of new laws.

its a pretty expensive set up for the can on the early cars (as well as 911s) as its two long runs of large diameter hose. VW were more penny pinching with their approach during the same era. only a long line of fuel vapor hose (small diam) to rear of cars and shorter lengths of woven hose from rear cans to fan and aircleaner. you can see why they changed it in 74 to a rear can. the accountants would have been doing the numbers looking for a dollar here and a dollar there. for the same reason they would have wanted to delete it from as many cars as they could early on in production.

the cars (4 or 6) that made it here in the 70s (all european spec) don't have any of it.
expansion tank or can. i think aus brought in the cans in 1975 following USA standards.
generally aus copied the usa about 5 years behind on just about all emissions stuff.
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Cairo94507
post Mar 30 2021, 06:14 PM
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My '71 914-6 was a CA delivery. (IMG:style_emoticons/default/beerchug.gif)
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