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 Post subject: single carb conversion
Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#1  Unread postPosted: December 5th, 2017, 7:49 pm

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OK I picked up another gl1200. It sat for 15 years. I knew that going in and my one prerequisite was the motor had to turn over which it does. So now I've got the carb rack off and on the bench. After tearing one carb apart to see what kind of shape it's in I find everything is froze. I think the carbs are toast. So I'm considering doing the single carb conversion. It doesn't look all that difficult. But my one question is do I block off the secondary air supply system?
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Past rides
1967 Harley 125
1968 Honda Dream 300
1973 Honda CB750
1972 Honda 450
1984 Honda Shadow 700
1998 Suzuki Marauder VZ800

Present rides
1990 Gl1500 w/Hobo Trike Kit
30102
31986
"Peace is that brief glorious moment in history, when everybody stands around reloading". - Thomas Jefferson


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#2  Unread postPosted: December 6th, 2017, 3:15 am

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I would block it off .....

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#3  Unread postPosted: December 6th, 2017, 4:47 am

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Location: Lebanon, PA
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My Bike Models: 1984 GL1200 Standard - 18,000 miles

1987 GL1200 Interstate - 61,000

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Both of my bikes have the secondary air system removed. I put 9/16" freeze plugs in the holes - Dorman model # 555-008 ( https://www.dormanproducts.com/p-32574-555-008.aspx) on one motor and then I got a set of plugs from another forum member for the other motor. The freeze plugs just tap into the hole and they haven't moved for years.

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Brian
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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#4  Unread postPosted: December 6th, 2017, 5:26 am

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Location: Centralia Illinois
Local time: May 20th, 2018, 4:40 pm
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My Bike Models: 78 GL1000
84 GL1200I (parts bike)
84 GL1200I
85 GL1200I
86 GL1200A

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I would remove the secondary air system when converting to a single carburetor.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#5  Unread postPosted: December 6th, 2017, 6:24 am

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My Bike Models: 1983 Interstate with '84 1200 engine, Solex single carb, and C5 ignition.
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Secondary air system is those tubes that go into the heads?

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#6  Unread postPosted: December 6th, 2017, 6:52 am

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Location: Lebanon, PA
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My Bike Models: 1984 GL1200 Standard - 18,000 miles

1987 GL1200 Interstate - 61,000

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Yup.

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Brian
Retired US Navy 1983-2003
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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#7  Unread postPosted: December 6th, 2017, 7:15 am

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Location: Boyertown Pa
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My Bike Models: 86 Goldwing Aspencade under construction
1990 GL1500 w/trike kit

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Thanks all. I wasn't sure if eliminating that air supply would adversely affect performance. So next is a diy intake manifold. Think I got that covered with all the info online on how it's done. I'll post back as my project moves along.

Bill

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What the government gives to one man was taken away from another.

Bill

Past rides
1967 Harley 125
1968 Honda Dream 300
1973 Honda CB750
1972 Honda 450
1984 Honda Shadow 700
1998 Suzuki Marauder VZ800

Present rides
1990 Gl1500 w/Hobo Trike Kit
30102
31986
"Peace is that brief glorious moment in history, when everybody stands around reloading". - Thomas Jefferson


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#8  Unread postPosted: December 6th, 2017, 7:26 am

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Location: Lebanon, PA
Local time: May 20th, 2018, 5:40 pm
Country:  United States (us)
My Bike Models: 1984 GL1200 Standard - 18,000 miles

1987 GL1200 Interstate - 61,000

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Removing it, even with the stock carbs, improves performance. The stock system is designed so that it is intentionally lean. Removing the secondary air system and fine tuning the carb gets rid of this condition.

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Brian
Retired US Navy 1983-2003
If you aren't having fun doing it, find something else to do.


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#9  Unread postPosted: December 6th, 2017, 8:12 am

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Location: Boyertown Pa
Local time: May 20th, 2018, 4:40 pm
Country:  United States (us)
My Bike Models: 86 Goldwing Aspencade under construction
1990 GL1500 w/trike kit

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Good to know. Thanks Brian

_________________________________

What the government gives to one man was taken away from another.

Bill

Past rides
1967 Harley 125
1968 Honda Dream 300
1973 Honda CB750
1972 Honda 450
1984 Honda Shadow 700
1998 Suzuki Marauder VZ800

Present rides
1990 Gl1500 w/Hobo Trike Kit
30102
31986
"Peace is that brief glorious moment in history, when everybody stands around reloading". - Thomas Jefferson


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#10  Unread postPosted: December 6th, 2017, 10:04 am

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Location: Van Nuys Ca.
Local time: May 20th, 2018, 1:40 pm
Country:  United States (us)
My Bike Models: 1983 Interstate with '84 1200 engine, Solex single carb, and C5 ignition.
2016 KLR 650
My Bike Logs forum link: viewforum.php?f=122

Profile Personal album

My YouTube Channel
I wonder what removing it would do on the FI 1200. Hmm.

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PLEASE! Use your Gallery album for saving pictures instead of using attachments or picture sharing sites, especially technical reference pics. This will make sure your images will ALWAYS be in your post and the discussion thread will make sense!
Go HERE and learn how to use the Gallery.


Image Image ImageClick to order CGW Stuff

If you know someone can embroider our 3" patch, let me know!
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How to add your bike photo to the rotating banner and our Banner Rides Page.


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#11  Unread postPosted: December 6th, 2017, 6:58 pm

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Location: Victoria, BC,
Local time: May 20th, 2018, 1:40 pm
Country:  Canada (ca)
My Bike Models: 1985 GL1200 LTD (2)
2008 GL1800 (sold)

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Isn't the secondary air system for CA/US models only? Don't believe it is on my '85 LTD FI.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#12  Unread postPosted: December 6th, 2017, 7:35 pm

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Total Posts: 20627
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Location: Van Nuys Ca.
Local time: May 20th, 2018, 1:40 pm
Country:  United States (us)
My Bike Models: 1983 Interstate with '84 1200 engine, Solex single carb, and C5 ignition.
2016 KLR 650
My Bike Logs forum link: viewforum.php?f=122

Profile Personal album

My YouTube Channel
Secondary air is on this FI engine I have. No idea if it’s CA or not.

_________________________________

PLEASE! Use your Gallery album for saving pictures instead of using attachments or picture sharing sites, especially technical reference pics. This will make sure your images will ALWAYS be in your post and the discussion thread will make sense!
Go HERE and learn how to use the Gallery.


Image Image ImageClick to order CGW Stuff

If you know someone can embroider our 3" patch, let me know!
My photo gallery
How to use the Gallery, Part 1, Part 2

How to add your bike photo to the rotating banner and our Banner Rides Page.


Image


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#13  Unread postPosted: December 6th, 2017, 7:48 pm

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Joined: January 1st, 2015, 2:59 pm
Last visit: Yesterday, 7:46 pm

Total Posts: 315
Active Topics: 28

Total Images: 3
Location: Boyertown Pa
Local time: May 20th, 2018, 4:40 pm
Country:  United States (us)
My Bike Models: 86 Goldwing Aspencade under construction
1990 GL1500 w/trike kit

Profile Personal album

Mine is from Fl. also.

_________________________________

What the government gives to one man was taken away from another.

Bill

Past rides
1967 Harley 125
1968 Honda Dream 300
1973 Honda CB750
1972 Honda 450
1984 Honda Shadow 700
1998 Suzuki Marauder VZ800

Present rides
1990 Gl1500 w/Hobo Trike Kit
30102
31986
"Peace is that brief glorious moment in history, when everybody stands around reloading". - Thomas Jefferson


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#14  Unread postPosted: December 7th, 2017, 5:12 am

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Total Images: 368
Location: Lebanon, PA
Local time: May 20th, 2018, 5:40 pm
Country:  United States (us)
My Bike Models: 1984 GL1200 Standard - 18,000 miles

1987 GL1200 Interstate - 61,000

Profile Personal album

There is so little in the manual about the FI system, how is anyone to know for sure...

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Brian
Retired US Navy 1983-2003
If you aren't having fun doing it, find something else to do.


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#15  Unread postPosted: December 22nd, 2017, 2:01 am

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My Bike Models: 2002 kawasaki vulcan 1500 drifter- sold
1987 honda goldwing interstate gl1200- sold
1997 gl1500- sold
1981 gl 1100- sold
2006 kawasaki vulcan 1600- current
1980 GL1100 (The Wanderer II)- current
1985 GL 1200 Aspencade (The Wanderer III )

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OK I picked up another gl1200. It sat for 15 years. I knew that going in and my one prerequisite was the motor had to turn over which it does. So now I've got the carb rack off and on the bench. After tearing one carb apart to see what kind of shape it's in I find everything is froze. I think the carbs are toast. So I'm considering doing the single carb conversion. It doesn't look all that difficult. But my one question is do I block off the secondary air supply system?
Image

I went the sc route on my gl1100 with a vw 34 pic 3 and i had a heck of a time dialing it in. I adjusted as best i could and it still ran rich. Running better now though.
currently am working on "The Wanderer III" which is a 1985 gl1200 aspy and have the carbs out. So I must decide which way too go.
good luck !

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