| Intake manifold design | Rate Topic |
| Moderators: redbaron, MDKramer, Flyone, AZgl1500 |
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| Posted: Mon Sep 15th, 2008 03:49 pm | 1st Post |
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Hey to all, I have just finished rebuilding my weber DGAV 32/36 carb for conversion to single carb on my 1200. I found a few threads for jetting and have basically brought it back to the stock configuration, I am trying to design/ build an intake for it any idea's? I was going to use a porsche 914 plenum and runners but I couldn't find one. I am thinking about sheet metal and thin steel tubing, I can weld the whole thing together but If I use aluminum I would have to jig everything and have my neighbor tig it together. ANy recommendations, I will be heating the intake with coolant which brings me to another point, I can weld tubing to the plenum and runners to heat it but using aluminum will present another tig job for my neighbor and I don't think i have built up enough favors for that!!!! I figure I would use the same size tubing as the intake "elbow" from the original carb setup but I am not sure of that either. Any info on intake design for single/ 2 barrel carb setup would be great. Thanks I may have stinky farts, but at least I can ride!
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| Posted: Mon Sep 15th, 2008 04:03 pm | 2nd Post |
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Use exhaust tubing the same size as the rubber manifold inlets on your bike. Mine was made using 4 "J" bends cut and welded together. You don't need to heat it if the carb is the right size. I used an old 1500 Volks Beetle carb. It doesn't sweat or freeze up and runs great. Mine is an 1100 but the 1200 isn't much if any different. Bernie
____________________ GL1500 Valkyrie Work for tomorrow, live for today. Live life like you mean it! American Legion Member Patriot Guard Rider Member Vietnam Veteran 68/69 MSF Instructor |
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| Posted: Mon Sep 15th, 2008 04:13 pm | 3rd Post |
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stinkyfartur  I've been putting a materials list together in my head and was concidering using copper plate and plain old copper tubing for coolant heat. Copper is easy to cut and solder with tools I already have. Another idea is using plastic. With the wide selection of glues available, that too is easy to assemble and plumb. Anyway, just kinda thinking out loud.
____________________ 1983 GL1100 Interstate and 1983 Interstate going naked http://classicgoldwings.com A Honda Goldwing GL1100 Specific discussion forum. |
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| Posted: Mon Sep 15th, 2008 04:31 pm | 4th Post |
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When I got my Weber equipped Aspencade, Raymond gave me this manifold setup to try someday. It fits a Weber carb perfectly, and it has the 4 runners you can hook. However you can, it's up to you. But a good start. Pretty small, but looks efficient. If you need more pics, I can take a pic of mine tonight. Here on Ebay You don't have to use the tubes supplied, but the manifold looks good. Last edited on Mon Sep 15th, 2008 04:32 pm by Silicon Sam ____________________ 1983 GL1100 Interstate Black 1997 GL1500 SE Pearl Sapphire Black |
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| Posted: Sun Jan 25th, 2009 04:30 pm | 5th Post |
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I have a 1981 gl1100i that I'm making a manifold that replaces the air box and carbs using the head elbows. I have access to mill and lathe plus I TIG so I have and advantage here. I'm using a Weber 32/36 dvg carb, after it in I'll figure the correct jetting using air/fuel ratio meter. I think the main issue will be at idle may possibly need to go down one or two jets. But I'm attemting to keep the installation simple slip into elbow boots tighten clamp. Ever need to put stock carbs back in simple matter to do. But this is half the fun of an old wing.
____________________ Tell me it can't be done and I will make it happen Previous bikes 76 GL 1000 77 GL 1000 Current 81 Interstate (Daily Bike) 81 Interstate ( Future standard with some twists) 82 Aspencade (restoration Project been sitting since 95 possibly trike) 89 GL1500 Aspencade |
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| Posted: Sun Jan 25th, 2009 05:13 pm | 6th Post |
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Been running a 2 barrel Holley on my 1100 for about 4 years now . Made the intake by converting the original airbox into the plenum. It's not pretty but it was super cheap and has held up well. The Holley was super cheap and has really brought the bike back to life after fighting the original carbs for years... Feel free to check it out: http://www.htc.net/~squirts/plastic.htm
____________________ http://www.htc.net/~squirts Squirts' Biker Page |
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| Posted: Sat Feb 4th, 2012 03:56 am | 7th Post |
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mainwiz3 wrote: I have a 1981 gl1100i that I'm making a manifold that replaces the air box and carbs using the head elbows. I have access to mill and lathe plus I TIG so I have and advantage here. I'm using a Weber 32/36 dvg carb, after it in I'll figure the correct jetting using air/fuel ratio meter. I think the main issue will be at idle may possibly need to go down one or two jets. But I'm attemting to keep the installation simple slip into elbow boots tighten clamp. Ever need to put stock carbs back in simple matter to do. But this is half the fun of an old wing. mainwiz3, I see you're online right now. What ever happened with your 1100 single-carb project? Last edited on Sat Feb 4th, 2012 03:57 am by CaptainMidnight85 ____________________ "They're gonna make it look like suicide." Hunter S. Thompson, one day before his death. |
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