Carburetors
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Re: Carburetors
Im pretty sure its just the carbs outa sync I bought a sync tool so hopefully thiss weekend I can get them syncd
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Re: Carburetors
Gl1100 carbs vs Gl1000 carbs,,,, , there is a noticeable difference, if you don’t care about performance at all or an ability to rev over 6500rpm then yes 1100carbs May be for you. They are better than the single carb conversions especially the vw or stromberg version that’s just terrible imho. 1100 carbs only have 1 accelerated pump that does provide better drive ability in the lower rpm ranges. They do have 4 air cutoff valves that are expensive to replace.
If you decide to stay with 1000 carbs keep in mind that the 75-77’s are the biggest and provide the biggest performance if setup properly. Just always use the same number carbs for all 4, don’t mix & match, that’s a bad idea. I have found that Mike Nixon’s and Randakks assessments that properly setup 1000 carbs will outperform most anything else. My .02
A simple test that I have used on my hot rod car engines to provide the correctly sized carbs for them is to hook a vacuum gauge up to a manifold vacuum source and monitor/watch it up to redline. preferably it will maintain under 1/2in of vacuum under full throttle up to redline, if it does you should be good on size,then it’s just a matter of getting the jetting right. And like I’ve said before, all Honda carbs that I’ve tested are extremely lean on the idle/intermediate jetting and extremely rich on the secondary jetting. Flatten that fuel curve out and you’ll get the very best you can out of those carbs. There’s no magic pill here, ya got do the work, make them spotlessly clean and correct the jetting. Hope this helps
If you decide to stay with 1000 carbs keep in mind that the 75-77’s are the biggest and provide the biggest performance if setup properly. Just always use the same number carbs for all 4, don’t mix & match, that’s a bad idea. I have found that Mike Nixon’s and Randakks assessments that properly setup 1000 carbs will outperform most anything else. My .02
A simple test that I have used on my hot rod car engines to provide the correctly sized carbs for them is to hook a vacuum gauge up to a manifold vacuum source and monitor/watch it up to redline. preferably it will maintain under 1/2in of vacuum under full throttle up to redline, if it does you should be good on size,then it’s just a matter of getting the jetting right. And like I’ve said before, all Honda carbs that I’ve tested are extremely lean on the idle/intermediate jetting and extremely rich on the secondary jetting. Flatten that fuel curve out and you’ll get the very best you can out of those carbs. There’s no magic pill here, ya got do the work, make them spotlessly clean and correct the jetting. Hope this helps
Red 1976 oe owner
1976 LTD restored
1980 CBX , in the que, to fix the ignorant heavy handed owner
1981 CBX
1977 CB750 K7
2014 FJR OE owner, sold
1980 GL1100
1984 GL1200 naked
1969 CL350, in the que
1976 LTD restored
1980 CBX , in the que, to fix the ignorant heavy handed owner
1981 CBX
1977 CB750 K7
2014 FJR OE owner, sold
1980 GL1100
1984 GL1200 naked
1969 CL350, in the que
- robin1731
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Re: Carburetors
I have to say this. I've ridden a few GL1000's with GL1100 carbs. They ran fine. Pulled to redline easily. Everything stock. 1000 carbs are still the better way to go but they'll run fine with 1100 carbs.
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
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
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Re: Carburetors
And start easily …
Gord
Gord
"I'd rather Ride than Shine"
‘14 KLR650 ... not a rat ... yet
‘84 GL1200i ‘R2B6' (Rat to Be 6, the last, adopted by twowings)
My Original 'RAT' was a hybrid '82 CB900/1100F
‘14 KLR650 ... not a rat ... yet
‘84 GL1200i ‘R2B6' (Rat to Be 6, the last, adopted by twowings)
My Original 'RAT' was a hybrid '82 CB900/1100F
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Re: Carburetors
Well Robin, my experience’s not to disagree is that every 1100 carb equipped 1000 that I’ve ever had the pleasure to ride would be noticeably flat at 6500 and above, now with that said the funny thing is that even 1100 bikes don’t pull clean in the upper ranges. Now the really funny part of it us that once I reduced the 145 main jet down to a 140 jet it pulls much better, not quite sure why that is, you would think that it would happen if it was lean but not really rich... Anyway that’s been my experience.
I will have to agree with Gord though in that the 1100’s do seem to start better and the accelerator pump tends to cover up a lot of short comings. But again a well sorted set of 1000 carbs WILL work just about perfectly and WILL kick the snot out of an same equipped bike with 1100 carbs on it. Just the way it is. Honda did size the 75-77 carbs about perfectly on them, they really don’t offer any improvement with bigger carbs.
I will have to agree with Gord though in that the 1100’s do seem to start better and the accelerator pump tends to cover up a lot of short comings. But again a well sorted set of 1000 carbs WILL work just about perfectly and WILL kick the snot out of an same equipped bike with 1100 carbs on it. Just the way it is. Honda did size the 75-77 carbs about perfectly on them, they really don’t offer any improvement with bigger carbs.
Red 1976 oe owner
1976 LTD restored
1980 CBX , in the que, to fix the ignorant heavy handed owner
1981 CBX
1977 CB750 K7
2014 FJR OE owner, sold
1980 GL1100
1984 GL1200 naked
1969 CL350, in the que
1976 LTD restored
1980 CBX , in the que, to fix the ignorant heavy handed owner
1981 CBX
1977 CB750 K7
2014 FJR OE owner, sold
1980 GL1100
1984 GL1200 naked
1969 CL350, in the que
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Re: Carburetors
Mike Nixon recommends defeating the air cut-off valves because they are expensive and it won’t hurt anything to do so. viewtopic.php?f=54&t=67126
Regarding the accelerator pump, yes there is only one pump but it feeds all four carburetors, same as two barrel car carburetors, one pump feeds both barrels.
As Robin has said, I too have ridden a 78 GL1000 quite a bit (my brother’s) and it is very tractable and will pull to redline easily, not as quick as my 75 but still runs good. It has stock jets by the way.
Regarding the accelerator pump, yes there is only one pump but it feeds all four carburetors, same as two barrel car carburetors, one pump feeds both barrels.
As Robin has said, I too have ridden a 78 GL1000 quite a bit (my brother’s) and it is very tractable and will pull to redline easily, not as quick as my 75 but still runs good. It has stock jets by the way.
1975 GL1000
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Re: Carburetors
I guess I should clarify 1 thing I said, when I said that a 1000 equipped with 1100 carbs would not rev to redline that is technically incorrect, my statement sounds like it will rev to around 6500 rpm and stop which is technically not correct, it will rev more quickly to 6500-6800 and then more slowly to 8500 but it will pull redline if you stay in it, just not as quickly.
Now on MY 76 it would rev but painfully slow above 6500 which was more pronounced than others I’ve ridden, but that was initially with stock 1100 carbs. But my 76 at that time had the heads/intakes ported & polished as well as having the heads milled .040in and the cams advanced +4 degrees which should give a much stronger signal to the carbs so that may account for some of it on my bike. But just the same all the 1000’s I’ve ridden that had 1100 carbs exhibited the slower reving to redline. Single carb conversions were more pronounced that way. After all the modification I did which involved a lot of machine work to increase the airflow through the smaller stock bore 1100’s that must exceed the oe 1000’s because it picked up a bunch of mph on my measured test strip with the highly modified 1100’s but was much slower on the same test strip with the stock 1100’s vs the 1000’s.
But the thing here that should always be followed is that it’s you bike & your money and if it makes you smile do what you want !
Now on MY 76 it would rev but painfully slow above 6500 which was more pronounced than others I’ve ridden, but that was initially with stock 1100 carbs. But my 76 at that time had the heads/intakes ported & polished as well as having the heads milled .040in and the cams advanced +4 degrees which should give a much stronger signal to the carbs so that may account for some of it on my bike. But just the same all the 1000’s I’ve ridden that had 1100 carbs exhibited the slower reving to redline. Single carb conversions were more pronounced that way. After all the modification I did which involved a lot of machine work to increase the airflow through the smaller stock bore 1100’s that must exceed the oe 1000’s because it picked up a bunch of mph on my measured test strip with the highly modified 1100’s but was much slower on the same test strip with the stock 1100’s vs the 1000’s.
But the thing here that should always be followed is that it’s you bike & your money and if it makes you smile do what you want !
Red 1976 oe owner
1976 LTD restored
1980 CBX , in the que, to fix the ignorant heavy handed owner
1981 CBX
1977 CB750 K7
2014 FJR OE owner, sold
1980 GL1100
1984 GL1200 naked
1969 CL350, in the que
1976 LTD restored
1980 CBX , in the que, to fix the ignorant heavy handed owner
1981 CBX
1977 CB750 K7
2014 FJR OE owner, sold
1980 GL1100
1984 GL1200 naked
1969 CL350, in the que
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- Chrome Member
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- Location: Akron, Ohio
Re: Carburetors
Ok so I have fixed the float post I have taken the carbs of the 77 an taken all jets out an ran carb cleaner threw them to clean them out put back together started it an it just revs right up to 4k rpm with the twist of yhe throttle it will run up to redline but let off the throttle an it drops to 4k an stays there. Now I dont have the push cable installed just the pull cable an to me I thoughy it has enough snap back from the spring to not need the push cable am I wrong about that ?
- gltriker
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Re: Carburetors
Now, Use the synchronizing tool you talked aboutBurnsYoFace34 wrote: ↑Wed Apr 27, 2022 3:40 pm Ok so I have fixed the float post I have taken the carbs of the 77 an taken all jets out an ran carb cleaner threw them to clean them out put back together started it an it just revs right up to 4k rpm with the twist of yhe throttle it will run up to redline but let off the throttle an it drops to 4k an stays there. Now I dont have the push cable installed just the pull cable an to me I thoughy it has enough snap back from the spring to not need the push cable am I wrong about that ?
"Im pretty sure its just the carbs outa sync I bought a sync tool so hopefully this weekend I can get them syncd"
Here's just òne of many articles for that procedure
https://www.randakksblog.com/carb-synch ... /#more-383
Last edited by gltriker on Mon May 02, 2022 8:17 am, edited 3 times in total.
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
- Fred Camper
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Re: Carburetors
Seems like a puck may be sticking on the post, not the outside shinney side. But 4000 is pretty high for only one stuck puck so it may be something else letting in the air.
Proud member of the NGW Cartel (Rochester MI)
1977 GL1000 BADDOG (April 2012 BOTM)
1976 LTD - '993 LTD...and so it begins'
You should remember that it's peace of mind you're after and not just fixing the machine. R.Pirsig
1977 GL1000 BADDOG (April 2012 BOTM)
1976 LTD - '993 LTD...and so it begins'
You should remember that it's peace of mind you're after and not just fixing the machine. R.Pirsig
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- Chrome Member
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- Location: Akron, Ohio
Re: Carburetors
Does anyone know where to get more air attachments for the sync tool mine came with 4 threaded tubes but only 2 of the 4 screw into the intakes (SNIP) stupid or what size thread they are could in use like a grease fitting
Edited for Language Whiskerfish
Edited for Language Whiskerfish
- gltriker
- Honored Life Member
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- Location: central NY State
Re: Carburetors
5mm is the correct thread size
Google for similar results with these words?
Adapter Kit - Vacuum Carb Sync - 5mm
Note: I will advise you to NOT get the permanent install type adapters with a rubber cap.
If a slight backfire is created in the intake elbow, odds are the rubber cap will pop off the adaptor at a high velocity GONE
and you better have a spare cap along with you to replace it.
Cliff
Google for similar results with these words?
Adapter Kit - Vacuum Carb Sync - 5mm
Note: I will advise you to NOT get the permanent install type adapters with a rubber cap.
If a slight backfire is created in the intake elbow, odds are the rubber cap will pop off the adaptor at a high velocity GONE
and you better have a spare cap along with you to replace it.
Cliff
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
- pidjones
- SUPER BIKER!!!!
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Re: Carburetors
Are you certain that you didn't loose a runner o-ring? They can slip out pretty easily when mounting the rack.
"Love 'em all.... let God sort 'em out!"
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
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Re: Carburetors
No all 4 runner I rings are there I even put some gasket Silicon around them aswell just in case I think the carbs are just way outa sync i got the adapters yesterday so here soon I'll be doin a carb sync
- gltriker
- Honored Life Member
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- Joined: Fri Sep 24, 2010 9:11 pm
- Location: central NY State
Re: Carburetors
BurnsYoFace34 wrote: ↑Wed Apr 27, 2022 3:40 pm snip- started it an it just revs right up to 4k rpm with the twist of yhe throttle it will run up to redline but let off the throttle an it drops to 4k an stays there.
BurnsYoFace34 wrote: ↑Mon May 02, 2022 8:12 am No all 4 runner I rings are there I even put some gasket Silicon around them as well just in case I think the carbs are just way outa sync i got the adapters yesterday so here soon I'll be doin a carb sync
Were you successful to eventually get it under control with your synchronizing equipment ?
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
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