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> EVAP EMISSION SYSTEM LAYOUT - HISTORY INFO NEEDED, layouts through the years.
wonkipop
post Apr 13 2022, 07:16 PM
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ok guys.

@JeffBowlsby and i have come across a historical question on the history/originality section of site. its been discussed for a year or so now.

would be good to get to the bottom of it. not that it matters much to making your car run and (IMG:style_emoticons/default/driving-girl.gif) (IMG:style_emoticons/default/driving.gif) it.

what we need is an image from the emissions warranty.

from each model type. 1.7s, 1.8s, 2.0s and sixers for each model year.


here is the anomaly.

from my car. 74 1.8

Attached Image
Attached Image

jeff has this up his excellent website of historical documentation.

from a 73

Attached Image

those of you with a sharp eye will notice they are different.
see where fan hose goes.

--------

the difference is of interest as it may be tied to how to correctly plumb the EVAP cannister after the change to engine bay location. or it may not?
most of us probably don't care too much, but for those that might it could be interesting.
another one of those 914 mysteries maybe.

if you still have an emissions warranty, take a pic and post them up if you have time.

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Posts in this topic
wonkipop   EVAP EMISSION SYSTEM LAYOUT - HISTORY INFO NEEDED   Apr 13 2022, 07:16 PM
bandjoey   Pelican Parts has full diagrams of all motors. A ...   Apr 13 2022, 10:03 PM
wonkipop   Pelican Parts has full diagrams of all motors. A...   Apr 13 2022, 10:47 PM
Montreal914   Very interesting! :popcorn:   Apr 13 2022, 11:43 PM
Van B   @wonkipop I hope you like worms because you just ...   Apr 14 2022, 04:18 PM
Van B   Needless to say, I'll be switching mine back t...   Apr 14 2022, 04:19 PM
Jonathan Livesay   They show both in the service manual. Seems to me ...   Apr 14 2022, 05:13 PM
Van B   They show both in the service manual. Seems to me...   Apr 14 2022, 05:25 PM
JeffBowlsby   Something I had forgotten about this diagram is th...   Apr 14 2022, 05:44 PM
wonkipop   Something I had forgotten about this diagram is t...   Apr 14 2022, 07:32 PM
Van B   Jeff, mine is the same and it’s a 12/73 build da...   Apr 14 2022, 06:21 PM
StarBear   From an engineer’s perspective (mine), the syste...   Apr 14 2022, 06:34 PM
wonkipop   From an engineer’s perspective (mine), the syst...   Apr 14 2022, 07:42 PM
wonkipop   @Van B . [b]@[url=http://www.914world.com/bbs2/i...   Apr 14 2022, 08:05 PM
wonkipop   @[url=http://www.914world.com/bbs2/index.php?showu...   Apr 15 2022, 12:32 AM
Van B   @wonkipop Mine is oriented as two hoses on the r...   Apr 15 2022, 07:09 AM
wonkipop   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Apr 15 2022, 01:22 PM
StarBear   I checked and confirmed that mine is oriented and ...   Apr 15 2022, 08:21 AM
wonkipop   I checked and confirmed that mine is oriented and...   Apr 15 2022, 01:10 PM
StarBear   [quote name='StarBear' post='2995401' date='Apr 1...   Apr 15 2022, 03:06 PM
wonkipop   [quote name='StarBear' post='2995401' date='Apr ...   Apr 15 2022, 05:40 PM
wonkipop   I checked and confirmed that mine is oriented and...   Apr 15 2022, 01:34 PM
Van B   SB is talking about the 1970’s photoshop work th...   Apr 15 2022, 02:53 PM
StarBear   SB is talking about the 1970’s photoshop work t...   Apr 15 2022, 03:10 PM
wonkipop   SB is talking about the 1970’s photoshop work ...   Apr 15 2022, 05:52 PM
wonkipop   @Van B + [b]@[url=http://www.914world.com/bbs2/...   Apr 15 2022, 06:46 PM
wonkipop   @Van B + [b]@[url=http://www.914world.com/bbs2/...   Apr 15 2022, 07:22 PM
wonkipop   i found this on file when looking for the vw emiss...   Apr 15 2022, 08:07 PM
L-Jet914   @wonkipop Here is my emissions control system boo...   Apr 15 2022, 10:19 PM
wonkipop   hey thanks @L-Jet914 . :beer2: looks like yours...   Apr 15 2022, 10:25 PM
L-Jet914   hey thanks [b]@[url=http://www.914world.com/bbs2...   Apr 15 2022, 11:09 PM
wonkipop   i found these fairly easily on ebay ads. 1975 911 ...   Apr 15 2022, 10:35 PM
StarBear   Adding to the weirdness, strange that there is a 1...   Apr 16 2022, 06:58 AM
wonkipop   Adding to the weirdness, strange that there is a ...   Apr 16 2022, 03:47 PM
wonkipop   going back through my files i come up with this fr...   Apr 16 2022, 04:32 PM
Van B   Here you go @wonkipop   Apr 16 2022, 05:44 PM
Van B   All of those you posted are opposite mine... Looks...   Apr 16 2022, 05:45 PM
wonkipop   All of those you posted are opposite mine... Look...   Apr 16 2022, 06:04 PM
Van B   Any 74 2.0 owners want to be a friend and post the...   Apr 16 2022, 06:56 PM
JeffBowlsby   This beyond cool Wonk. You are really shredding t...   Apr 16 2022, 08:13 PM
wonkipop   This beyond cool Wonk. You are really shredding ...   Apr 16 2022, 08:32 PM
StarBear   what will help seal it will be an emissions warra...   Apr 17 2022, 06:02 AM
wonkipop   what will help seal it will be an emissions warr...   Apr 17 2022, 02:48 PM
Van B   Happy Easter Wonki. I just remembered you live in ...   Apr 16 2022, 09:47 PM
wonkipop   Happy Easter Wonki. I just remembered you live in...   Apr 16 2022, 11:24 PM
wonkipop   an aside from scanning BAT ads for above - noticed...   Apr 17 2022, 03:03 PM
StarBear   That is COOL sleuthing!!!!   Apr 17 2022, 04:16 PM
Van B   That is COOL sleuthing!!!! :agr...   Apr 17 2022, 04:24 PM
wonkipop   That is COOL sleuthing!!!! if t...   Apr 17 2022, 04:49 PM
wonkipop   @[url=http://www.914world.com/bbs2/index.php?showu...   Apr 17 2022, 05:34 PM
wonkipop   @[url=http://www.914world.com/bbs2/index.php?showu...   Apr 17 2022, 06:17 PM
Jim C   Here are the EVAP connections from my 1976 owners ...   Apr 18 2022, 06:40 AM
wonkipop   @Jim C thanks for posting that up Jim. :beer2:...   Apr 18 2022, 03:39 PM
Van B   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Apr 18 2022, 03:45 PM
wonkipop   [b]@[url=http://www.914world.com/bbs2/index.php?...   Apr 18 2022, 04:18 PM
wonkipop   and......jim's car has the revised schematic t...   Apr 18 2022, 04:29 PM
Van B   Having been introduced to the Porsche brand by way...   Apr 18 2022, 04:59 PM
wonkipop   Having been introduced to the Porsche brand by wa...   Apr 18 2022, 05:03 PM
wonkipop   this was the one and only second half of 74MY 2.0 ...   Apr 18 2022, 05:38 PM
wonkipop   using the research so far i finally made sense of ...   Apr 18 2022, 10:52 PM
Van B   We’re these rapid changes happening at the same ...   Apr 18 2022, 11:04 PM
wonkipop   We’re these rapid changes happening at the same...   Apr 18 2022, 11:26 PM
wonkipop   @Van B and [b]@[url=http://www.914world.com/bbs2...   Apr 18 2022, 11:54 PM
wonkipop   @JeffBowlsby i found a couple of good condition...   Apr 19 2022, 06:23 PM
Jim C   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Apr 20 2022, 07:31 AM
wonkipop   i happened to come across the explanation for the ...   Apr 19 2022, 08:41 PM
Jim C   Just to clarify, the '76 2.0 diagram is from t...   Apr 20 2022, 07:33 AM
wonkipop   Just to clarify, the '76 2.0 diagram is from ...   Apr 20 2022, 04:36 PM
wonkipop   second half of 76 model year - 912E. evap system ...   Apr 23 2022, 05:13 PM


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