GL1000/1100/1200 Single Carb Conversion 2 Barrel 32DFT Progressive Runs Excellent - Page 115 - Steve Saunders Goldwing Forums

 24Likes
 
LinkBack Thread Tools
post #1141 of 1292 (permalink) Old 11-29-2014, 05:14 PM
Member
 
Join Date: Sep 2012
Location: Calgary, Alberta, Canada
Model: '82 GL1100 naked
Posts: 135
If you have a drill press and some hole saws and you can solder some plumbing pipes together you could build this manifold, pretty well all from stuff you can buy at Home Depot or a plumbing store. I did it because I thought that the super heat conductivity of copper would result in warm runners and plenum but there is just too much heat taken away by the air/fuel going through the runners for that to work.

It is all made of 1" copper plumbing pipe. I used a 2" end cap for the plenum. The flanges for the runner ends and the plenum flange are made of 1/4" brass. The plenum flange is made to accept the Transdapt 2025, 2 to 1 carb adapter.

With the Weber 32/32 DFT carb it works very well.


End cap/plenum


Flanges have grooves machined for OE Orings.


With Transdapt adapter


On bike



How it runs
https://www.youtube.com/watch?v=rBcF...r#action=share
canuckxxx is offline  
Sponsored Links
Advertisement
 
post #1142 of 1292 (permalink) Old 11-29-2014, 06:10 PM
Banned
 
Join Date: Jul 2009
Location: Silo'd in SD, USA
Posts: 12,287
Nice!
If you insulate those runners like I do, ...the waste-heat that is transferring to those flanges you made will travel the length of each runner to the plenum and warm it nicely.

Do that, ...and I guarantee that plenum will go from "cold to the touch" to at least "warm to the touch".
Very effective heat transfer happens with the insulators.

Like me, you may be easily tempted to ride without insulators to show-off your work. Get past it if so.

Run those insulators and your engine will smooth out more.

Remember, heating the manifold is purposed to keep the fuel within the charge suspended and continually floating-along with the air. Additionally, a heated tract centers the fuel charge in the tract allowing for (the short version 》) ...more efficency.

The pic tries to convey the message of what is going-on.
Your tract is different above the plenum, but hopefully you get the idea..
Attached Images
File Type: jpg 1417306243759.jpg (30.9 KB, 21 views)
CaptainMidnight85 is offline  
post #1143 of 1292 (permalink) Old 11-29-2014, 06:18 PM
Banned
 
Join Date: Jul 2009
Location: Silo'd in SD, USA
Posts: 12,287
Insulators are layered with various material (I call them "super-insulators") that rely on 3/4" waterpipe insulating foam that is s sectioned to allow for the larger diameter of the tubing.

Think "pot holders" made for grasping stuff from the oven as being incorporated into the insulators, ...along with "heavy duty" aluminum foil..

The difference is worth the small effort required to make them.

The more heat that you can retain, ...the better. Especially at those elbows. Nice job on grooving those for o-rings.
You have all the heat you need in going that route.
Realize it.
Attached Images
File Type: jpg 1417306695286.jpg (49.3 KB, 38 views)
CaptainMidnight85 is offline  
Sponsored Links
Advertisement
 
post #1144 of 1292 (permalink) Old 11-29-2014, 06:26 PM
Banned
 
Join Date: Jul 2009
Location: Silo'd in SD, USA
Posts: 12,287
If your carb was turned 90, your tract would look more like this. With that 2-to-1 adapter, it doesn't matter though.
...break out your crayon's
Attached Images
File Type: jpg 1417307129302.jpg (30.1 KB, 23 views)
alanc1100 likes this.
CaptainMidnight85 is offline  
post #1145 of 1292 (permalink) Old 11-29-2014, 06:36 PM
Banned
 
Join Date: Jul 2009
Location: Silo'd in SD, USA
Posts: 12,287
...copper:
Attached Images
File Type: jpg 1417307799094.jpg (18.9 KB, 38 views)
CaptainMidnight85 is offline  
post #1146 of 1292 (permalink) Old 11-29-2014, 06:38 PM
Banned
 
Join Date: Jul 2009
Location: Silo'd in SD, USA
Posts: 12,287
...Solex example:
Attached Images
File Type: jpg 1417307879585.jpg (19.5 KB, 30 views)
CaptainMidnight85 is offline  
post #1147 of 1292 (permalink) Old 11-29-2014, 06:39 PM
Banned
 
Join Date: Jul 2009
Location: Silo'd in SD, USA
Posts: 12,287
Heat retaining black finish:
Attached Images
File Type: jpg 1417307964484.jpg (13.9 KB, 28 views)
CaptainMidnight85 is offline  
post #1148 of 1292 (permalink) Old 11-30-2014, 07:28 AM
Member
 
Join Date: Sep 2012
Location: Calgary, Alberta, Canada
Model: '82 GL1100 naked
Posts: 135
It would be interesting to try insulating the runners and plenum although I am sceptical that it would make a huge difference.

The bike runs absolutely fine now with no added heat; no bogging or hesitation while accelerating and a nice smooth idle even before complete warn-up. I think it is due to the very small plenum volume and small runners...fuel/air is kept at a high velocity at all times.

I have not done extensive road testing because winter has set in so I'll have to wait 4 or 5 months to test more.

I have another single carb setup, with full coolant heating to the plenum, that I ran all summer and I have complete confidence in. This is an experimental thing to see what could be done with no heat but a smaller plenum.

Brian
canuckxxx is offline  
post #1149 of 1292 (permalink) Old 11-30-2014, 07:44 AM
Member
 
Join Date: Sep 2012
Location: Calgary, Alberta, Canada
Model: '82 GL1100 naked
Posts: 135
Quote:
Originally Posted by CaptainMidnight85 View Post
...Solex example:
Is that 1 1/4" copper pipe?
canuckxxx is offline  
post #1150 of 1292 (permalink) Old 11-30-2014, 08:03 AM
Banned
 
Join Date: Jul 2009
Location: Silo'd in SD, USA
Posts: 12,287
Quote:
Originally Posted by canuckxxx View Post
Is that 1 1/4" copper pipe?
I don't remember...
If I do remember correctly though, someone here built it.
...a couple years ago, ...maybe.

I've so many reference pictures that it became hard to keep track of the who, where and when of them all.

I realize it runs great. Video shows so..
It may run smoother and more efficient with added heat.

The insulators do work to remedy the exact issue you noticed and described in your video.
I thought I'd post to let you know what has worked for me in dealing with the same issue.

Speed and Velocity of the mixture can be friend or foe.
Heat tries to befriend and aide Speed or Velocity.
Your heat is free for the grabbing. What's to loose in running insulators for a month or so to know if what I'm saying is true?

Tune it your best without...
...then try it with.
Chances are great that you will notice a difference and need to retune.
CaptainMidnight85 is offline  
Reply

  Steve Saunders Goldwing Forums > Forums > Goldwing Technical Forum > Altered Induction

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Steve Saunders Goldwing Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
2 barrel carb conversion and Vance and hines exhaust.pics Cyclebuster Altered Induction 10 07-31-2012 10:46 PM
GL1000 single carb conversion. Weber 32/36 & VW type 3 manifold. huzbum Altered Induction 9 01-02-2012 06:51 AM
Wanted: Holley carb for CI single carb conversion 77GL1000Wing For Sale/Wanted Forum 1 05-04-2011 10:19 AM
Single Carb Conversion for GL1000 and GL1100 Wings Dubswing General Motorcycle Discussion Forum 0 07-02-2009 01:35 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome