Gl1100 Weber 40 idf jetting help
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Gl1100 Weber 40 idf jetting help
I am going to install a pair of true Weber 40idf carburetors, made in Spain, on my gl1100. I was wondering if anyone would be able to help me with a starting point on the jetting ? The carburetors are used and I am going to clean and rebuild them and wanted to install the jetting that would get me close. I have jardines on the bike that have had the muffler section shortened and now have one set of baffles in them. Thanks for any help in advance, Steve
- gltriker
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Re: Gl1100 Weber 40 idf jetting help
I have no idea.
Scroll down this page to Similar Topics. I see one down there, that is 5 pages long.
Scroll down this page to Similar Topics. I see one down there, that is 5 pages long.
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.
- wingrider
- SUPER BIKER!!!!
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Re: Gl1100 Weber 40 idf jetting help
Welcome to the forum! Who’s manifolds are you running? If Randakk, he provides a guideline for jetting. The pipes you will find do not effect as much as some think.
2002 1800 Wing
2001 Valkyrie Interstate
1978 1200 EFI Wing with Motorvation Coupe Royale sidecar
1977 1200 Wing cafe/bobber project
1974 Suzuki GT550
2001 Valkyrie Interstate
1978 1200 EFI Wing with Motorvation Coupe Royale sidecar
1977 1200 Wing cafe/bobber project
1974 Suzuki GT550
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Re: Gl1100 Weber 40 idf jetting help
I tried getting them from Randakk but they were sold out. I had someone with a milling machine make me some that look just like Randakk’s. I tried to get randakk to sell me the instructions that come with his manifolds and they wouldn’t sell them.
- gregforesi
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Re: Gl1100 Weber 40 idf jetting help
This is for my 1000 - I'm running 50 idle, and 115 mains with 135 air correctors. Randakk's start point was 47 idle, 110 mains and 185 air correctors (for the 1000). I run velocity stacks with screens and currently a Delkevic exhaust that's pretty open. I had the bike on a dyno a few years ago and it was going very lean at the top end so that's why my air correctors are so small.
Soldering jets closed and opening them up with $1 drills is far cheaper than collecting jets.
There is at least one Canadian 1100 here that is running Webers. The Rat will know who it is.
Because the linkages contra-rotate they are tough to get the angles correct. It would be easier to hook them up with a splitter (BMW?). I know I don't have the Randakk instructions anymore but the throttle geometry in the instructions was my work.
Soldering jets closed and opening them up with $1 drills is far cheaper than collecting jets.
There is at least one Canadian 1100 here that is running Webers. The Rat will know who it is.
Because the linkages contra-rotate they are tough to get the angles correct. It would be easier to hook them up with a splitter (BMW?). I know I don't have the Randakk instructions anymore but the throttle geometry in the instructions was my work.
2006 GL1800 (Brutus Maximus)
1978 GL1000 (White Trash - 2012 BOTY
(If you want to discuss the Trashmobile, Webers, Rearsets, Clubmans, or other stuff then send me a PM.)
"Getting old ain't for sissies" - Phyllis Diller
"So how much you gonna spend to win that $5 trophy?" - Cyborg
1978 GL1000 (White Trash - 2012 BOTY
(If you want to discuss the Trashmobile, Webers, Rearsets, Clubmans, or other stuff then send me a PM.)
"Getting old ain't for sissies" - Phyllis Diller
"So how much you gonna spend to win that $5 trophy?" - Cyborg
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- Lead Member
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Re: Gl1100 Weber 40 idf jetting help
Thanks a million for the help. Will the 1100 jetting be similar ?
- robin1731
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Re: Gl1100 Weber 40 idf jetting help
It might be a good place to start. Many variables go in to jetting. Two bikes set up "identical" might need different jetting. Then location plays a huge part also. You need to know how to read plugs to get proper jetting.
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
- gregforesi
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Re: Gl1100 Weber 40 idf jetting help
Without sticking it on a dyno and reading the exhaust gases, reading the plugs is next best. Because the Webers don't have a midrange circuit the transition between the idle circuit and the mains can be tricky to call. As I said, mine was running out of gas at top end so the fix to richen it was smaller air correctors.
If it falls on it's nose when leaving a light under full throttle (sorry Robin) the accelerator pump has the biggest influence. Randakk called for 5mm of thread showing on the accel pump adjusters. I'm at about 9mm. Once again, mine just likes more gas. Fuel mileage has always been around 33mpg but I've been known to get it down around 27 on good days. Unless a Harley has about $5k into the correct parts it's good night Irene (sorry again Robin). The 27mpg that causes is a very worthwhile investment and results in a big grin.
If it falls on it's nose when leaving a light under full throttle (sorry Robin) the accelerator pump has the biggest influence. Randakk called for 5mm of thread showing on the accel pump adjusters. I'm at about 9mm. Once again, mine just likes more gas. Fuel mileage has always been around 33mpg but I've been known to get it down around 27 on good days. Unless a Harley has about $5k into the correct parts it's good night Irene (sorry again Robin). The 27mpg that causes is a very worthwhile investment and results in a big grin.
2006 GL1800 (Brutus Maximus)
1978 GL1000 (White Trash - 2012 BOTY
(If you want to discuss the Trashmobile, Webers, Rearsets, Clubmans, or other stuff then send me a PM.)
"Getting old ain't for sissies" - Phyllis Diller
"So how much you gonna spend to win that $5 trophy?" - Cyborg
1978 GL1000 (White Trash - 2012 BOTY
(If you want to discuss the Trashmobile, Webers, Rearsets, Clubmans, or other stuff then send me a PM.)
"Getting old ain't for sissies" - Phyllis Diller
"So how much you gonna spend to win that $5 trophy?" - Cyborg
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- Lead Member
- Posts: 8
- Joined: Mon Sep 04, 2017 8:58 pm
Re: Gl1100 Weber 40 idf jetting help
Thank you very much I really appreciate the help
- Rat
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Re: Gl1100 Weber 40 idf jetting help
Bike built by Oldwing in Cambridge Ontario as opposed to Oldewing in Columbusgregforesi wrote: ↑Sat May 22, 2021 4:56 pm This is for my 1000 - I'm running 50 idle, and 115 mains with 135 air correctors. Randakk's start point was 47 idle, 110 mains and 185 air correctors (for the 1000). I run velocity stacks with screens and currently a Delkevic exhaust that's pretty open. I had the bike on a dyno a few years ago and it was going very lean at the top end so that's why my air correctors are so small.
Soldering jets closed and opening them up with $1 drills is far cheaper than collecting jets.
There is at least one Canadian 1100 here that is running Webers. The Rat will know who it is.
Because the linkages contra-rotate they are tough to get the angles correct. It would be easier to hook them up with a splitter (BMW?). I know I don't have the Randakk instructions anymore but the throttle geometry in the instructions was my work.
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
- gregforesi
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Re: Gl1100 Weber 40 idf jetting help
Not that one Gord. When we did the Manitoulin run he was there. Machinist, Mechanic, a name like that I think. Millwright!!!
2006 GL1800 (Brutus Maximus)
1978 GL1000 (White Trash - 2012 BOTY
(If you want to discuss the Trashmobile, Webers, Rearsets, Clubmans, or other stuff then send me a PM.)
"Getting old ain't for sissies" - Phyllis Diller
"So how much you gonna spend to win that $5 trophy?" - Cyborg
1978 GL1000 (White Trash - 2012 BOTY
(If you want to discuss the Trashmobile, Webers, Rearsets, Clubmans, or other stuff then send me a PM.)
"Getting old ain't for sissies" - Phyllis Diller
"So how much you gonna spend to win that $5 trophy?" - Cyborg
-
- Lead Member
- Posts: 8
- Joined: Mon Sep 04, 2017 8:58 pm
Re: Gl1100 Weber 40 idf jetting help
That’s a cool bike. What number emultion tubes should I be using ? The carburetors came with f7 tubes
- wingrider
- SUPER BIKER!!!!
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Re: Gl1100 Weber 40 idf jetting help
Millwright was the one
2002 1800 Wing
2001 Valkyrie Interstate
1978 1200 EFI Wing with Motorvation Coupe Royale sidecar
1977 1200 Wing cafe/bobber project
1974 Suzuki GT550
2001 Valkyrie Interstate
1978 1200 EFI Wing with Motorvation Coupe Royale sidecar
1977 1200 Wing cafe/bobber project
1974 Suzuki GT550
-
- Lead Member
- Posts: 8
- Joined: Mon Sep 04, 2017 8:58 pm
Re: Gl1100 Weber 40 idf jetting help
Emulsion tube size ?
- Rat
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- Location: Toronto .... Canada
Re: Gl1100 Weber 40 idf jetting help
"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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