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VeeDubb steppin
Samba Member
Joined: August 16, 2015
Posts: 80
Location: weast of eden
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 Posted: Wed Dec 02, 2015 9:06 am Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| I would like to figure a way to mount the later model "S"hose - air box/to frame mount . I'm not a big fan of cheesy,modified so called cold air intake mods . but until I can get the engine out for rebuild /re-weld of bracket ,I'm curious as heck if anyone has seen any trick AFM to air cleaner mods for a temporary consideration.If ever there was a need for one ,I'd say this is it! Notice how wrong the S hose to airbox fits .. |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51153
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Wed Dec 02, 2015 9:42 am Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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So I'm guessing the S boot that's on there now is a late style one and that's why it's so mangled? Do you have ay remnants of the original one?
VW wasn't in the habit of making a new part for a small run, I'll bet the original boot was robbed from some other product of the era, maybe a 411/412 or watercooled car?
If all else fails google up "silicone intake elbows", there's multiple sources for all different kinds of elbows and tubes to build a riced up cold air system, with a little creativity you can piece together something that will work. Or cut the later boot and add a section of exhaust tubing bent to suit with a couple clamps.
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VeeDubb steppin
Samba Member
Joined: August 16, 2015
Posts: 80
Location: weast of eden
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| Posted: Wed Dec 02, 2015 10:30 am Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| Yes the S hose was a new later style .I have the one that came with the Bus ,but I believe it is the same style.I would love to find a donor replacement hose if anyone might have any leads etc. |
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germansupplyscott
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Joined: May 22, 2004
Posts: 7094
Location: toronto
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| Posted: Wed Dec 02, 2015 3:27 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| VeeDubb steppin wrote: |
| Yes the S hose was a new later style .I have the one that came with the Bus ,but I believe it is the same style.I would love to find a donor replacement hose if anyone might have any leads etc. |
Slight mystery for sure. The fiche shows the filter housing and connections but does not show a different s-hose, which leads to believe it's the same since the hose is shown in another part of the same diagram.
In the interest of generating data for a vacuum hose diagram for the '74 CA FI system it would great to try to piece together system as it was originally. As I said before there are several components that are unique to this spec engine and not found on any other one.
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VeeDubb steppin
Samba Member
Joined: August 16, 2015
Posts: 80
Location: weast of eden
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| Posted: Wed Dec 02, 2015 6:19 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| I could build the injection /egr etc .systems to 74 Cal. specs ,and just continue on with the 1978 GE engine/ and 03 ? trans for durability.I do wish I could find the correct S hose for this airbox. It would be doable if I had it.Also did you see my comments about my dist./auto.modulator/ fuel pressure reg. / Deccel valve vac. line dilemma . |
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germansupplyscott
Samba Member
Joined: May 22, 2004
Posts: 7094
Location: toronto
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| Posted: Thu Dec 03, 2015 9:16 am Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| VeeDubb steppin wrote: |
| Now then the next dillema is hooking up the non existent Decel valve. The vac line from the plenum that goes to a T and then to Ign. Dist. and on manual transmission would go between the Decel valve and pressure reg. However on my nightmare, that position is occupied by a line going to Vac. modulator? On trans. I wont even mention the mystery solenoid under the Mystery airbox setup. |
Vacuum modulator on the transmission should connect to a large nipple on the rear (facing rear of bus) of the throttle body. It's a 9mm ID hose and should be a straight shot between throttle body and transmission modulator. At least I think this is correct.
Decel valve is the electric thing under the air cleaner housing, screwed into the mounting bracket.
Which vacuum line on the plenum are you talking about above? On a '75 plenum there will be at least 2 if not three nipples on the plenum.
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Tram
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Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Thu Dec 03, 2015 6:09 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| germansupplyscott wrote: |
| VeeDubb steppin wrote: |
| Yes the S hose was a new later style .I have the one that came with the Bus ,but I believe it is the same style.I would love to find a donor replacement hose if anyone might have any leads etc. |
Slight mystery for sure. The fiche shows the filter housing and connections but does not show a different s-hose, which leads to believe it's the same since the hose is shown in another part of the same diagram.
In the interest of generating data for a vacuum hose diagram for the '74 CA FI system it would great to try to piece together system as it was originally. As I said before there are several components that are unique to this spec engine and not found on any other one. |
Could the throttle body itself have a design difference? What does the fiche show? I was wondering about a 914 hose but in finding a couple pics of this it wouldn't work, either- unless again, there's a design difference in the TB.
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| Bryan67 wrote: |
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germansupplyscott
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Joined: May 22, 2004
Posts: 7094
Location: toronto
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| Posted: Thu Dec 03, 2015 6:48 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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'75 Automatic Bus TB is unique because of the large nipple for the vacuum modulator. 411/412 had a similar TB for the cars (most NA market) that had the 003 automatic trans. I have never seen a '74 CA market TB - but would be surprised if it was different from the '75 Auto TB since all '74's with FI were CA and had the 003 trans.
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Tram
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| Posted: Thu Dec 03, 2015 7:06 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| germansupplyscott wrote: |
| '75 Automatic Bus TB is unique because of the large nipple for the vacuum modulator. 411/412 had a similar TB for the cars (most NA market) that had the 003 automatic trans. I have never seen a '74 CA market TB - but would be surprised if it was different from the '75 Auto TB since all '74's with FI were CA and had the 003 trans. |
Yeah, but don't forget that only 1974 FI 412s with 1.8s had L-Jet- the remainder were D-Jet. I'm wondering if the '74 ED Bus engine shared the '74 only 412 TB- esp since both were 1,8 engines.
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| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50352
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| Posted: Thu Dec 03, 2015 7:12 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| Tram wrote: |
| germansupplyscott wrote: |
| '75 Automatic Bus TB is unique because of the large nipple for the vacuum modulator. 411/412 had a similar TB for the cars (most NA market) that had the 003 automatic trans. I have never seen a '74 CA market TB - but would be surprised if it was different from the '75 Auto TB since all '74's with FI were CA and had the 003 trans. |
Yeah, but don't forget that only 1974 FI 412s with 1.8s had L-Jet- the remainder were D-Jet. I'm wondering if the '74 ED Bus engine shared the '74 only 412 TB- esp since both were 1,8 engines. |
I don't think the '74 412 had an air preheat, IIRC the tin wasn't even stamped for such. |
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Tram
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Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Thu Dec 03, 2015 7:17 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| Wildthings wrote: |
| Tram wrote: |
| germansupplyscott wrote: |
| '75 Automatic Bus TB is unique because of the large nipple for the vacuum modulator. 411/412 had a similar TB for the cars (most NA market) that had the 003 automatic trans. I have never seen a '74 CA market TB - but would be surprised if it was different from the '75 Auto TB since all '74's with FI were CA and had the 003 trans. |
Yeah, but don't forget that only 1974 FI 412s with 1.8s had L-Jet- the remainder were D-Jet. I'm wondering if the '74 ED Bus engine shared the '74 only 412 TB- esp since both were 1,8 engines. |
I don't think the '74 412 had an air preheat, IIRC the tin wasn't even stamped for such. |
Preheat goes to the air cleaner, correct?
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| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50352
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| Posted: Thu Dec 03, 2015 9:36 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| Tram wrote: |
| Preheat goes to the air cleaner, correct? |
Yes |
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Tram
Samba Socialist
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Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Thu Dec 03, 2015 9:39 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| Wildthings wrote: |
| Tram wrote: |
| Preheat goes to the air cleaner, correct? |
Yes |
I was talking about the throttle body (TB) up there, not the air cleaner.
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| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
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notchboy
Samba Member
Joined: April 27, 2002
Posts: 22463
Location: Escondido CA
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| Posted: Thu Dec 03, 2015 10:34 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| Tram wrote: |
| germansupplyscott wrote: |
| '75 Automatic Bus TB is unique because of the large nipple for the vacuum modulator. 411/412 had a similar TB for the cars (most NA market) that had the 003 automatic trans. I have never seen a '74 CA market TB - but would be surprised if it was different from the '75 Auto TB since all '74's with FI were CA and had the 003 trans. |
Yeah, but don't forget that only 1974 FI 412s with 1.8s had L-Jet- the remainder were D-Jet. I'm wondering if the '74 ED Bus engine shared the '74 only 412 TB- esp since both were 1,8 engines. |
Oh the geekness runs strong in this thread. Consider your FI AT 74 bus unique should you.
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| t3kg wrote: |
OK, this thread is over. You win. |
Jason "notchboy" Weigel
1964 1500 S
1964 T34 S Convertible
1977 Westfalia Camper pop-top |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 22728
Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Thu Dec 03, 2015 10:42 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| notchboy wrote: |
| Tram wrote: |
| germansupplyscott wrote: |
| '75 Automatic Bus TB is unique because of the large nipple for the vacuum modulator. 411/412 had a similar TB for the cars (most NA market) that had the 003 automatic trans. I have never seen a '74 CA market TB - but would be surprised if it was different from the '75 Auto TB since all '74's with FI were CA and had the 003 trans. |
Yeah, but don't forget that only 1974 FI 412s with 1.8s had L-Jet- the remainder were D-Jet. I'm wondering if the '74 ED Bus engine shared the '74 only 412 TB- esp since both were 1,8 engines. |
Oh the geekness runs strong in this thread. Consider your FI AT 74 bus unique should you. |
I'm sure you'll come to love the FI/AT/AC in your Type 34 pretty well. 
Don't think I can't do it. 
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| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
To best contact me, please use the EMAIL function in my profile |
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notchboy
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Joined: April 27, 2002
Posts: 22463
Location: Escondido CA
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JSMskater
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Joined: February 01, 2006
Posts: 5362
Location: Murrieta California
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| Posted: Thu Dec 03, 2015 10:57 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| Tram wrote: |
| notchboy wrote: |
| Tram wrote: |
| germansupplyscott wrote: |
| '75 Automatic Bus TB is unique because of the large nipple for the vacuum modulator. 411/412 had a similar TB for the cars (most NA market) that had the 003 automatic trans. I have never seen a '74 CA market TB - but would be surprised if it was different from the '75 Auto TB since all '74's with FI were CA and had the 003 trans. |
Yeah, but don't forget that only 1974 FI 412s with 1.8s had L-Jet- the remainder were D-Jet. I'm wondering if the '74 ED Bus engine shared the '74 only 412 TB- esp since both were 1,8 engines. |
Oh the geekness runs strong in this thread. Consider your FI AT 74 bus unique should you. |
I'm sure you'll come to love the FI/AT/AC in your Type 34 pretty well.
Don't think I can't do it. |
Well, for the fi he may just drag it over so he can use my 1218 tester 
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Tram
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Posts: 22728
Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Thu Dec 03, 2015 11:13 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| notchboy wrote: |
Only if you ad a T4
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You been hanging out with Nate? 
Have you managed to break the one in the '77 Westy yet?
When you bought it from me in 2010 you asked me how long the engine was going to last. I asked you how long your heart was going to beat. Remember?
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| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
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notchboy
Samba Member
Joined: April 27, 2002
Posts: 22463
Location: Escondido CA
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| Posted: Fri Dec 04, 2015 10:40 am Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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| Tram wrote: |
| notchboy wrote: |
Only if you ad a T4
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You been hanging out with Nate?
Have you managed to break the one in the '77 Westy yet?
When you bought it from me in 2010 you asked me how long the engine was going to last. I asked you how long your heart was going to beat. Remember? |
It still goes along. Looks like crap, drips crap, and blows crap out the exhaust. It needs a going through and a detail clean for sure to match the present state of the rest of the bus. Joe keeps tempting me to do the Suby swap. Then I wont need a 1218 tester
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| t3kg wrote: |
OK, this thread is over. You win. |
Jason "notchboy" Weigel
1964 1500 S
1964 T34 S Convertible
1977 Westfalia Camper pop-top |
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restocal63
Samba Member
Joined: November 05, 2006
Posts: 224
Location: Malta
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| Posted: Wed Jul 19, 2017 12:41 pm Post subject: Re: Air Cleaner and Crankcase Vent Hose Q's (74 dual carbs) |
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Sorry to revive this old thread but I had a 75 bus 1.8 AP engine with dual carbs, can you please provide me with the part number off that hose as mine is missing?
Would a 63mm flexible aluminium ducting work?
As usual thanks in advance for your help and guidance. |
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