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giddy up
Samba Member
Joined: June 11, 2017
Posts: 136
Location: BC
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 Posted: Tue Jan 08, 2019 7:46 am Post subject: fresh air intake |
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| hi. does anyone have any diagrams or good pictures of the complete fresh air intake system for a 70 fastback? |
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KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 34003
Location: Conejo Valley, CA
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| Posted: Tue Jan 08, 2019 10:49 am Post subject: Re: fresh air intake |
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This covers multiple years, but you can figure out which applies:
https://www.vwispwest.com/pg92 |
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giddy up
Samba Member
Joined: June 11, 2017
Posts: 136
Location: BC
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| Posted: Tue Jan 08, 2019 4:35 pm Post subject: Re: fresh air intake |
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| thanks KTPHil. i have seen that and it is a good parts description. im still trying to figure out why there is a fresh air intake going thru the rear firewall, bolting to the heater boxes and attaching to a tube out back of the car on both sides. the previous owner had removed all tubing and i want to hook it all back up. the bentley manual and the haynes manual both only show a heater box on the left side and a fresh air intake on the right. i have heater boxes and fresh air intakes on both sides? |
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giddy up
Samba Member
Joined: June 11, 2017
Posts: 136
Location: BC
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| Posted: Tue Jan 08, 2019 4:46 pm Post subject: Re: fresh air intake |
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or am i overthinking this. do i just need to attach a new hose to the 1" top pipe in pic 1 to the 1" pipe in pic 2 and just leave the pipe in pic 3 open to draw in fresh air on both sides? will the thermostat inside picture 1 automatically open and close or can anybody tell me how it works?
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nogoodwithusernames
Samba Member
Joined: November 10, 2014
Posts: 599
Location: CA, USA
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giddy up
Samba Member
Joined: June 11, 2017
Posts: 136
Location: BC
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| Posted: Tue Jan 08, 2019 6:11 pm Post subject: Re: fresh air intake |
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i am not running a stock muffler or headers. so the factory elbows with the little pipes coming off them join to the pipe in my picture 3? what do you suggest i do if im running aftemarket headers and muffler? should i fabricate a custom elbow to join from the fan shroud to both the heater box and the fresh air intake? i am getting new heater boxes as i want heat in the car. this is the muffler and header i have purchased...
https://www.cip1.ca/ProductDetails.asp?ProductCode=ACC-D-1013 |
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KTPhil
Samba Member
Joined: April 06, 2006
Posts: 34003
Location: Conejo Valley, CA
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| Posted: Tue Jan 08, 2019 11:25 pm Post subject: Re: fresh air intake |
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You can cap off those 1" (approx.) pipes at the body, and remove the foot-long metal 1" pipes above the valve covers... you can't use them with your non-stock muffler.
But you should then attach large flexible hoses from the cast aluminum shroud to the heater boxes, and then from the heater boxes to the car body intakes.
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giddy up
Samba Member
Joined: June 11, 2017
Posts: 136
Location: BC
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| Posted: Wed Jan 09, 2019 7:27 am Post subject: Re: fresh air intake |
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| perfect. will order ducting and cap off and remove the piping. thanks very much |
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Bobnotch
Samba Member
Joined: July 06, 2003
Posts: 22413
Location: Kimball, Mi
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| Posted: Wed Jan 09, 2019 12:11 pm Post subject: Re: fresh air intake |
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| giddy up wrote: |
| perfect. will order ducting and cap off and remove the piping. thanks very much |
I've found that plastic film canisters make a good cap for the 1 inch tube at the body. Another is a test strip container for diabetics (fits inside the body side tube.
Don't forget to plumb in the large pipes for heat, from the heat exchangers to the body. 
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giddy up
Samba Member
Joined: June 11, 2017
Posts: 136
Location: BC
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| Posted: Wed Jan 09, 2019 5:55 pm Post subject: Re: fresh air intake |
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| Bobnotch wrote: |
| giddy up wrote: |
| perfect. will order ducting and cap off and remove the piping. thanks very much |
I've found that plastic film canisters make a good cap for the 1 inch tube at the body. Another is a test strip container for diabetics (fits inside the body side tube.
Don't forget to plumb in the large pipes for heat, from the heat exchangers to the body. |
great suggestions. i was racking my brain trying to think of the best part to cap off the 1" pipe. |
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gt1953
Samba Member
Joined: May 08, 2002
Posts: 13848
Location: White Mountains Arizona
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| Posted: Wed Jan 09, 2019 6:07 pm Post subject: Re: fresh air intake |
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You would be amazed what some of the local smaller hardware stores have, like ACE hardware Tractor supply and Cal ranch have some interesting hardware items. Caps springs and other odd stuff.
Plastic film canister caps are few and rare as well considering a roll of 35mm film is something not many have laying around. Good idea though.
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