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914/4: 70 71 72 73 74 75 76 914/6: 70 71 72

> Colored hoses, Are they still available? Or has anyone tried dying a hose?
TonyA
post Aug 11 2020, 08:49 AM
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Maybe i ma crazy but are these available anywhere, or has anyone ever attempted to bleach and dye a hose?
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wonkipop
post Jan 26 2021, 09:44 PM
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a couple of guys have pulled the earlier metal cans apart on the samba forum.

go here.

https://www.thesamba.com/vw/forum/viewtopic...asc&start=0

however the guy admits his photo of interior parts may not be laid out in the order they go in on the inside.

it is kind of clear from another post, done by a guy who just drills a hole in one end of the can to empty it (the end with the two lines) that there is a stack of perforated metal screens hard against this end.

between the two sets of information you can infer there are three layers, two perf screens and a filter layer sandwiched between hard against the end with the vapor line. there is a small hole in each of these to let the vapor line pass through. the vapor line has a pinched end and is almost closed over, but it can admit fumes. i guess it is pinched to stop charcoal getting squeezed down it and blocking it?

unlike later plastic cans, the metal can vapor line extends into the interior of the can.
the bigger port for the larger hose at that end stops at the surface of the can behind the filter and perforated metal screens. (this matches how the can is drawn in most of the emission system schematics).

thats the opposite of the plastic ones. the vapor line stops at the surface of the can and has a filter in front of it and the larger port extends in to be surrounded by charcoal.

at the other end is metal mesh screen and two layers of filter material. one is a fine screen the other is a coarse screen - looks like it might be steel wool. this compresses down on the charcoal using two smaller springs and not a single bigger spring as per the later plastic ones. essentially though in design its the same as the plastic cans.

the metal can uses more components and material.

the plastic version has fewer internal components and is simplified = less cost.

both designs have a "plenum" chamber at one end created by the spring or springs and which also compresses the charcoal. that chamber only has one large port feed in both.

never seen a metal can in the flesh. maybe it just has the one part # because its not meant to be disassembled.

the plastic can theoretically is designed to be serviceable. the plastic securing tabs in the end piece can break when you take them apart. perhaps the separate part # on that is so that dealers servicing the can (refilling charcoal) could put a new replacement end on if they broke the tabs on the original disassembling. could also be just for variations on the theme using the standard body - the later kombi plastic can has an L shaped entry port to clip the hose on rather than the straight port thats on the 914.

----------

VW part # 171 201 801 is for a golf (or rabbit in usa?).

its closer to a cylinder rather than the flattened can in the 914s.
its got the three port arrangement. two at one end, one at the other.

this looks to me like a one piece unit again not intended to be serviced. cheaper to replace whole unit than labor costs of taking it apart?
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Posts in this topic
TonyA   Colored hoses   Aug 11 2020, 08:49 AM
Dion   Tony, the only place I’ve ever seen have them ha...   Aug 13 2020, 05:00 AM
TonyA   Tony, the only place I’ve ever seen have them h...   Aug 13 2020, 07:23 PM
aturboman   Tony I have a roll each of original RED & GREE...   Aug 14 2020, 01:56 PM
TonyA   Tony I have a roll each of original RED & GRE...   Aug 14 2020, 03:26 PM
bbrock   Maybe i ma crazy but are these available anywhere...   Jan 18 2021, 10:27 AM
JeffBowlsby   OOooooh nice. Will you be taking orders for sets ...   Jan 18 2021, 10:37 AM
wonkipop   out of interest, does anyone know if the 1.8s orig...   Jan 18 2021, 04:37 PM
StarBear   out of interest, does anyone know if the 1.8s ori...   Jan 19 2021, 05:15 PM
wonkipop   [quote name='wonkipop' post='2883887' date='Jan 1...   Jan 20 2021, 03:10 AM
StarBear   [quote name='wonkipop' post='2883887' date='Jan ...   Jan 20 2021, 12:41 PM
StarBear   [quote name='wonkipop' post='2884296' date='Jan 2...   Jan 20 2021, 12:45 PM
bbrock   I stand self-corrected; looks like I have two gre...   Jan 21 2021, 08:46 AM
wonkipop   beaudy starbear. that info is great. i had an ear...   Jan 20 2021, 04:45 PM
StarBear   beaudy starbear. that info is great. i had an ea...   Jan 20 2021, 05:57 PM
StarBear   beaudy starbear. that info is great. i had an ea...   Jan 21 2021, 08:36 AM
StarBear   @wonkipop Here is a revised layout diagram, show...   Jan 21 2021, 11:51 AM
JeffBowlsby   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Jan 22 2021, 01:01 AM
wonkipop   i'm going to start a new topic on 1.8 hoses st...   Jan 21 2021, 02:24 PM
wonkipop   hmmm, its interesting. thats certainly true of the...   Jan 22 2021, 02:21 AM
StarBear   Ditto per @wonkipop; see my Virgo/Engineer evaluat...   Jan 22 2021, 09:34 AM
wonkipop   of interest re evap emissions plumbing. 73 beetle....   Jan 22 2021, 11:04 AM
wonkipop   researched this last year when replacing vacuum ho...   Jan 22 2021, 11:21 AM
wonkipop   re mr sb's thoughts on emissions engineering/w...   Jan 22 2021, 12:35 PM
wonkipop   74 emmission warranty material.   Jan 22 2021, 01:05 PM
StarBear   Wow; you da man @wonkipop ! So much to learn...   Jan 22 2021, 02:34 PM
wonkipop   i only know our cars starbear. i don't know an...   Jan 22 2021, 04:04 PM
wonkipop   vw technical booklet, date 1970. explains the evap...   Jan 22 2021, 04:16 PM
wonkipop   but this one is interesting. porsche evap emissio...   Jan 22 2021, 04:24 PM
JeffBowlsby   w-pop, StarBear, I think you have made some intere...   Jan 22 2021, 06:02 PM
wonkipop   interesting mr. b. i have a jan 74 build car. p...   Jan 22 2021, 06:45 PM
StarBear   All; I opened my cannister a few months ago to ref...   Jan 23 2021, 09:26 AM
StarBear   @DCheek IRRC, you have a 1.8L 914 and an origina...   Jan 23 2021, 12:46 PM
wonkipop   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Jan 23 2021, 11:50 PM
wonkipop   yes mr. sb. you can't find anything definitiv...   Jan 23 2021, 06:29 PM
wonkipop   a reasonably reputable 75 1.8 example. would say 9...   Jan 24 2021, 12:50 AM
StarBear   @wonkipop - You could write a research paper, for...   Jan 24 2021, 09:11 AM
StarBear   @dr914 @autoatlanta.com George - might you have an...   Jan 24 2021, 09:17 AM
StarBear   Another hose layout - presumably (?) a 74 1.8L wit...   Jan 24 2021, 09:49 AM
wonkipop   Evolution of the porsche evap system 1969-78 for 9...   Jan 24 2021, 02:23 PM
StarBear   :agree: Onward!   Jan 24 2021, 02:40 PM
wonkipop   something not in discussion so far is the 914/6. ...   Jan 25 2021, 05:07 PM
wonkipop   i took a look at the can in my 74 1.8 yesterday. i...   Jan 25 2021, 05:21 PM
JeffBowlsby   2 of the plastic cans in my inventory from 1974 2....   Jan 25 2021, 08:37 PM
wonkipop   its all pretty weird mr b. apologies about all th...   Jan 25 2021, 11:50 PM
wonkipop   a couple of guys have pulled the earlier metal can...   Jan 26 2021, 09:44 PM
bbrock   I pulled apart my metal canister and replaced the ...   Jan 27 2021, 03:37 PM
wonkipop   I pulled apart my metal canister and replaced the...   Jan 27 2021, 04:50 PM
bbrock   i'll be leaving mine alone i think. i have t...   Jan 28 2021, 09:05 AM
StarBear   i'll be leaving mine alone i think. i have ...   Jan 28 2021, 01:47 PM
JeffBowlsby   113.201.801A 69-73 (into early 1974) 914   Jan 27 2021, 04:03 PM
wonkipop   this is interesting mr. b. was in my files, a 2.0 ...   Jan 27 2021, 04:43 PM
Mark Henry   Is the hose sizes correct in the pic below, are th...   Feb 22 2021, 02:38 PM
StarBear   Is the hose sizes correct in the pic below, are t...   Feb 23 2021, 07:19 AM
JeffBowlsby   Here you go Mark, if you choose to use my hose dia...   Feb 25 2021, 03:18 AM
Mark Henry   Excellent! Thank you Jeff I have four 2.0 buil...   Feb 25 2021, 11:52 AM
StarBear   @wonkipop - getting more info. Do you know the ap...   Mar 18 2021, 03:11 PM
wonkipop   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Mar 22 2021, 01:37 AM
StarBear   Ok; here’s the best guesstimate. Counterflow hos...   Mar 24 2021, 11:12 AM
wonkipop   here is my view. the 914 is an argument between p...   Mar 25 2021, 02:34 AM
StarBear   Yeah. Think I’ll do something useful - like have...   Mar 25 2021, 02:58 PM
wonkipop   Yeah. Think I’ll do something useful - like hav...   Mar 25 2021, 07:11 PM
wonkipop   @StarBear found another 1.8 dr.914 has for sale...   Jul 3 2021, 07:08 PM
StarBear   Ah, more evidence that “we” are unique and spe...   Jul 3 2021, 08:52 PM
wonkipop   @StarBear - real special cars buddy. :beer1: o...   Jul 3 2021, 09:23 PM
rick 918-S   Bump :bump:   Sep 7 2021, 06:06 PM


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