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> Over Flow Tank and Charcoal Canister 914-6
Mike Fitton
post Oct 12 2017, 07:40 PM
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I have researched on this forum for a couple of days trying to figure out if the 914-6 came with an expansion tank and charcoal canister, I do not have either on my '70 # 2604. My 6 has the brackets for the expansion tank so that seems logical but I have seen a lot of posts saying the 6's did not have a canister, does anyone have an original 6 that could comment on this. Thanks!
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SirAndy
post Oct 12 2017, 07:43 PM
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No canister on a '70 /6 ...
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Mike Fitton
post Oct 12 2017, 08:18 PM
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QUOTE(SirAndy @ Oct 12 2017, 05:43 PM) *

No canister on a '70 /6 ...
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So no canister then does the expansion hose just route out through the bottom of the car?
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toolguy
post Oct 12 2017, 08:54 PM
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I say wrong, Mine has a metal expansion tank and the metal charcoal canister. .
It's shown in the factory parts manual for 914-6 section 2-1 item 15 and 31. . same part number used on the early 4 cylinder as the 6. .
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SirAndy
post Oct 12 2017, 09:04 PM
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QUOTE(toolguy @ Oct 12 2017, 07:54 PM) *
I say wrong, Mine has a metal expansion tank and the metal charcoal canister. .
It's shown in the factory parts manual for 914-6 section 2-1 item 15 and 31. . same part number used on the early 4 cylinder as the 6. .

I know of several unmolested '70 /6 that never had the charcoal canister ...
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johnhora
post Oct 12 2017, 09:18 PM
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Mike..
Yes the hose from the expansion tank vents/goes to the over flow hose and attaches via a plastic adapter. 1970 914-6 expansion tank no charcoal canister
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2..top view
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Socalandy
post Oct 12 2017, 09:26 PM
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I’ve seen 70 -6’s with and without vapor recovery/charcoal cans. My didn’t have one and was also missing the two holes in the inner fender for the lines leading back to the engine compartment. Based on that and seeing many original cars I believe that is the deciding factor. I can post pictures showing original 1970 -6’s with and without if you’d like
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Cairo94507
post Oct 12 2017, 09:46 PM
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My '71 had both and will have both again when reassembled. Sorry about the pictures size. I am a photo-sizing idiot. I just can't figure out how to reduce the size of the pictures.....why does Apple have to make it so hard? Or in the alternative, why is it that I am so stupid when it comes to this stuff?

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pete000
post Oct 12 2017, 09:46 PM
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My six was built in January 1970 and hs both.
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Cairo94507
post Oct 12 2017, 09:52 PM
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Cairo94507
post Oct 12 2017, 09:53 PM
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mepstein
post Oct 13 2017, 05:40 AM
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I've seen early 6's without and later with. One of the early ones was an origional owner who didn't change anything - ever- on his car. So I think it is one of those rolling changes from Porsche.
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gereed75
post Oct 13 2017, 05:40 AM
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Mine is #379. Don't got neither. Original as far as I know. Hose looks original and routed out the bottom.
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mskala
post Oct 13 2017, 06:27 AM
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My early '70 does not seem to have ever had the charcoal canister.
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Jasfsmith
post Oct 13 2017, 06:37 AM
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My Euro 6 had neither. The brackets for the expansion tank are present though the paint condition would indicate that no tank was ever installed.
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Mike Fitton
post Oct 13 2017, 08:00 AM
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QUOTE(Jasfsmith @ Oct 13 2017, 04:37 AM) *

My Euro 6 had neither. The brackets for the expansion tank are present though the paint condition would indicate that no tank was ever installed.


Good point, I will check the brackets on mine to see if there are any mounting wear marks.
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mountainroads
post Oct 13 2017, 08:35 AM
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QUOTE(gereed75 @ Oct 13 2017, 04:40 AM) *

Mine is #379. Don't got neither. Original as far as I know. Hose looks original and routed out the bottom.


Same here (other than the VIN, obviously). I've owned two. One very original and the other not quite. Both 1970 and neither had the charcoal cannister. Just the overflow drain out the bottom. As others have noted - it seems to be one of those inconsistent things. Not an early-late or California-rest of country item.

- MR
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gms
post Oct 13 2017, 09:27 AM
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I cannot say for sure one way or another but I can give you examples of canisters installed on later 1970 914/6. I cannot tell you if they were installed by the factory.
I think looking at the overflow down tube and looking for the holes for hoses to the back will give you and idea about what was there.

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Perry Kiehl
post Oct 13 2017, 10:12 AM
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All the un-touched 6's I've seen have had charcoal vapor cans
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gms
post Oct 13 2017, 10:58 AM
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Doing a little research and thinking about the system the answer is simple, if you have the hoses that go back to the air cleaner in the engine compartment it was probably installed
An installation requires holes in the front trunk and under the relay board in the engine compartment.
Here is an illustration from the shop manuals, air is circulated from the fan to the canister then it pushes fumes to the air cleaner on the engine. I know this is a diagram of a 4 cylinder car but the concept is the same for a six.

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