This is where discussions of EFI systems, Dual Carbs, Single Carb mods and plans can be discussed and shared.
If you are working on or have a problem with stock carbs then your questions do not belong here, please post them in the Goldwing Tech Discussions Forum.
Ericheath, by the "charge holes" are you referring to a portion of the intake opening on the head being slightly off from the opening on the elbow? That probably would cause some pooling of fuel at that point. Would it make sense at some future date to pull the heads and port them to match? Kinda makes me wish I'd thought of this before assembling the engine but at the time I didn't know about the difference in the 1100 & 1200 elbows. Oh well, changes are never easy or automatic, but sometimes wish they weren't quite so involved. Another thought just occured in my addled brain, it's only 10:30am so I'm still only using 10% of it....if that much. I have a good friend that's a good welder with aluminum, so I'm wondering if a person could take a set of 1200 & 1100 elbows and cut the base off the 1200's and weld them to the base of the 1100's after removing the base off those. Seems like a lot of work, just have to wait until I have some 1100's in hand and compare the fit on the head. Might be another way to skin that cat!
1984 GL1200 Standard, work in progress
1998 Valkyrie Tourer, my Honda Davidson
83gl1200 wrote:We have deq and inspections here for everything but motorcycles and commercial trucks. Its a real pita, and they could have done more for clean air if all they tested were the commercial trucks, but I think its a make work project more than anything. I can't say more than that because some moderator here apparently doesn't allow adult conversations on political or religious topics. My previous post was edited by them and locked. It may be time for me to move to another board myself. I prefer freedom of speach and there is none here.
Robin, I just read through the link you provided above and had to chuckle at the note in large letters at the bottom: "Pssst...change your belts." Amen to that! This pic has been posted before but is a good reminder, it's how the engine was when I got the bike.
1984 GL1200 Standard, work in progress
1998 Valkyrie Tourer, my Honda Davidson
I think if it were me and I was using 1200 heads, I'd use the 1200 intakes and try to keep the tubing close to the stock size. Smaller opening gives more velocity at lower rpms. To take advantage of the earlier models power, you had to get the revs up. The 1200 was designed to give more torque down low. If you want to race, okay, but for 98% of your driving! having torque at the bottom of the curve is better.
Whatever I suggest here should be given ample time for a moderator to delicately correct. I apologize in advance.
77 WING, 1200 engine with 77 heads, cams, gl1100 foot pegs, Magna V65 front end, 764A carbs, [-gone Suzuki M109 monoshock--, replaced with gl1100 shocks] gl 1200 swing arm, gl1500 final drive, wheel and rear brakes Valkyrie seat, Meanstreak tank, Sportster pipes, Power Arc ignition off crank.
77 Wing. black
83 Wing, in pieces
"Continuing education is important even if the subject matter is fairly useless (as in this case)."---Greg Foresi
Eric, the problem I'm having is the size of the opening on the rubber boots the flex runners have to enter. They are smaller by a fraction than the 1100 but just enough to prevent using the 1" coupler at the end. I'm still working on a solution to that problem, but may have to revert to the 1100 elbows, also they have a sharper curve and reach farther toward the carb than the 1200 units.
1984 GL1200 Standard, work in progress
1998 Valkyrie Tourer, my Honda Davidson
during my first single carb conversion in 8-10-2007 i searched about tuning a 34 pict-3 and found it. the master vw carb guide.
put a 28 pict-1 on my 82 1100 at that time. all that i could afford and ran fine for going back and forth to work for 2 years.
got an 83 1100 put a 34 pict-3 on it then the icing begun, overcame that with a lot of reading about icing.
last friday night i built a pvc manifold with 34 pict-3 and installed it and on an 89 1500 and drove it all weekend icing with this and icing resolved.
the most important reading to me was how much carburetion.
i run a 28 pict-1 on my 1980 gl1100 with aluminum runners and modified stock air chamber.
i also built a flex pipe manifold with 34 pict-3 sunday and am building supports for it and throttle cable for the 80 ask we speak. will fire up a.m.
The details you provide in building this pvc manifold for a single carb is very informtive. I need some help in seeing, or understanding how the carb is attched. The picture looks like it is quite high and sitting on a vertical tube. If you can clearify this, it would be very helpful.
Just wondering how others have positioned the carb, I can't tell real good from the various pics in this string of posts. It appears to me that I would need the linkage for the throttle cable facing the left side(sitting on the bike), am I right on that?
As for using ATF to soften the rubber, I left a couple in it over night and it helped some but not enough. Using a Dremel with a flat grinding stone, I flattened out the inside diameter by getting rid of the ridges that are present. I did that back to where the internal shoulder stops the tubing from going in any further and it appeared to make a difference. I was able to rest the elbow between the jaws of my vise(loosely) and tap the coupler in up to that shoulder. Using a radiator hose clamp makes it extremely tight so maybe that's my only solution if I keep the 1200 elbows. If I ever needed to remove the intake manifold it would be a real bugger unless all the intake elbows came off with it. Locally we have a place called Skycraft Surplus, it's a Toys R Us for men. It started as military surplus many years ago and has expanded into "if they don't have it, you don't need it" type of place....I can spend a couple hours and not see everything. Among other stuff, they have a goodly collection of rubber items of all shapes and sizes and I plan to take a look for something that might work/fit in the elbows and be large enough to receive the flex runners.
1984 GL1200 Standard, work in progress
1998 Valkyrie Tourer, my Honda Davidson
I hve a complete set of gl1100 carbs from a 81goldwing that needs orings between the carbs and the air box. I have explored everywhere I know and cannot find these orings. All kits I can find only provide orings for the intakes.
mtwinger wrote:I hve a complete set of gl1100 carbs from a 81goldwing that needs orings between the carbs and the air box. I have explored everywhere I know and cannot find these orings. All kits I can find only provide orings for the intakes.
Any suggestings where these might be available?
Randakks kit comes with those. Don't think you can find just those O-rings alone though.
1976 Goldwing Super Sport
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
mtwinger wrote:I hve a complete set of gl1100 carbs from a 81goldwing that needs orings between the carbs and the air box. I have explored everywhere I know and cannot find these orings. All kits I can find only provide orings for the intakes.
Here's where I am with the PVC manifold. To use the 1200 elbows I had to use my Dremel and grind down the internal lip on each rubber. Then did as DKL suggested, sharpened the edges of the couplers, lubed and pounded in place after cutting them in half. Due to the angle of the 1200 elbows, it causes the runners to be longer and raises the carb mount higher. Because the couplers had to be pounded in place, I clamped them with the hose clamps then did a trial fit and you can see the whiteout I used to mark where I wanted them. Pulled the flex out and preceeded to glue in place. I'm presently shaping the floor mount for the carb base, and if the intake filter arrives this week I should be close to giving it the smoke test. If the engine runs good, only then will I move on to completing the rest of the bike.
1984 GL1200 Standard, work in progress
1998 Valkyrie Tourer, my Honda Davidson
I have a good friend that's a good welder with aluminum, so I'm wondering if a person could take a set of 1200 & 1100 elbows and cut the base off the 1200's and weld them to the base of the 1100's after removing the base off those. Seems like a lot of work, just have to wait until I have some 1100's in hand and compare the fit on the head. Might be another way to skin that cat! 
