Unknown vent tubes


Information and questions on GL1200 Goldwings (1984-1987)
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starfleetengineer
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1984 GL1200I Interstate

Unknown vent tubes

Post by starfleetengineer » Fri Sep 17, 2010 9:40 pm



On my 84 1200I I have the non-Calif carbs. I took them back off tonight to recheck the vac routing. While looking through my Clymer manual I just noticed that I don't have a pcv. It shows one on the Calif modles but not the 49 state pic. One questions is, did I have one and someone took it off, do I not need one on this modle? Now for my other question. As I was looking at the carbs for the #'s I noticed that I have 2 open ports. 1 on each bank. In the Clymer book, page 145 fig 14 item # 32. Air vent joint pipe. Is this to be open to atmosphere, pluged off or does it go somewere else? It would explain alot if they are to be pluged or something hooks to them.

When I made the trade for the wing, I knew I would have to do some work to it. I also knew I would have to put parts into it. I know in the long run it will all be worth it, but right now,,,, I don't feel that way.


How many times do I have to tell ya,,, The right tool for the right job!

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tricky
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Re: Unknown vent tubes

Post by tricky » Sat Sep 18, 2010 7:09 am

Here is a jpg of the vacuum routing on a non calif model
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starfleetengineer
Posts: 329
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Location: Elkhart, Indiana
Motorcycle: 1979 Yamaha 650 Special
1978 CB750
1980 Yamaha 650 Special
1983 Honda V65 Magna 1100c
1984 GL1200I Interstate

Re: Unknown vent tubes

Post by starfleetengineer » Sat Sep 18, 2010 8:59 am

tricky wrote:Here is a jpg of the vacuum routing on a non calif model
I have this pic in the book and on a pdf. file. It dosen't show the 2 vent tubes nor dose it show the PCV. The tubes point down, but I can't believe they are tobe open to pull in unfiltered air. And I have not seen a 4 cycle engine that does not have a PCV system. The book and the pictures are unclear..
How many times do I have to tell ya,,, The right tool for the right job!

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tricky
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Re: Unknown vent tubes

Post by tricky » Sat Sep 18, 2010 2:13 pm

Post a picture of what your talking about maybe we can help.

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starfleetengineer
Posts: 329
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Location: Elkhart, Indiana
Motorcycle: 1979 Yamaha 650 Special
1978 CB750
1980 Yamaha 650 Special
1983 Honda V65 Magna 1100c
1984 GL1200I Interstate

Re: Unknown vent tubes

Post by starfleetengineer » Sat Sep 18, 2010 2:30 pm

Here are 2 pics of the tube. It has one just like it on the other bank of carbs.

You can see the open black tube in the ctr.
You can see the open black tube in the ctr.



How many times do I have to tell ya,,, The right tool for the right job!

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tricky
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Re: Unknown vent tubes

Post by tricky » Sat Sep 18, 2010 2:49 pm

here is a complete breakdown of the carbs and pieces

No pcv valve
There is a crankcase breather and a storage tank that must be emptied of deposits located by the left foot peg
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starfleetengineer
Posts: 329
Joined: Fri Jul 23, 2010 7:02 pm
Location: Elkhart, Indiana
Motorcycle: 1979 Yamaha 650 Special
1978 CB750
1980 Yamaha 650 Special
1983 Honda V65 Magna 1100c
1984 GL1200I Interstate

Re: Unknown vent tubes

Post by starfleetengineer » Sat Sep 18, 2010 2:54 pm

I have that pic as well. But It still dosen't tell me it the two ports are to be open or pluged off. I can't see them being open to atmosphere and drawing un filtered air.
How many times do I have to tell ya,,, The right tool for the right job!

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tricky
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Location: Canada

Re: Unknown vent tubes

Post by tricky » Sat Sep 18, 2010 3:00 pm

Drop over to the http://www.gl1200goldwings.com forum, it is a dedicated forum for the 1200's and plenty of riders there who may be able to tell you.

I have never taken my carbs apart other than removing them to enable engine removal.

kmarmorton@gmail.com
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Location: Beaverlodge, AB, Canada
Motorcycle: 1984 GL1200 Aspencade

Re: Unknown vent tubes

Post by kmarmorton@gmail.com » Mon Jun 19, 2017 6:05 pm

Has anyone figured out where these outlets connect to or if anything? On my '84 GL1200, they are pointed up and are not connected to anything either. I did go over to the 1200 forum but couldn't find anything. I would be surprised if they were left open to the air.

Shadowjack
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Re: Unknown vent tubes

Post by Shadowjack » Tue Jun 20, 2017 7:59 am

Those are not supposed to be connected to any tubes. They're the float bowl air vents. There's no vacuum so they're open, but they should be rotated so they point down so crap doesn't fall into them.



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