81 GW 1100 runs way too rich

[Lobo]

OK , we've made some progress on this too rich issue. We measured the idle jets and according to a reliable source they should be about .014 , mine are .020. Now the problem is where can I get new or used jets for an 81 1100? Is there anyway to use the jets for a 83 1100? The 83 jets are screw in and replaceable and also available from Honda. Any of you guys that went to a single carb got your old carbs laying around?

 

[slabghost]

Some sellers on ebay have stripped carbs down to the last screw to sell piece by piece. You might find a set or one at a time for sale. 80 rack is the same as the 81 I think.

 

[chilidawg]

Lobo » Sat Dec 13, 2014 7:12 am[/url]":2zosjk80]
OK , we've made some progress on this too rich issue. We measured the idle jets and according to a reliable source they should be about .014 , mine are .020. Now the problem is where can I get new or used jets for an 81 1100? Is there anyway to use the jets for a 83 1100? The 83 jets are screw in and replaceable and also available from Honda. Any of you guys that went to a single carb got your old carbs laying around?

I know this don't help ya, but mine went to a very happy fella in Scotland.

As far as going single is concerned, my experience is this, they never work just right, right outta the box, they will present their own set of problems to solve.

1, Manifold design. 2, To heat or not to heat. 3, Jetting issues.

If you have only one problem with your 4 rack and you believe you have identified it, stick with 'em, just keep a good set of syncing gauges on hand, you'll need 'em.

 

[joedrum]

those jet sizes sound small to me ...for 1000s idle jets are .035 ...i was thinking 1100s were the same ... seems there might be something else going on to cause the rich condition .....there are so many things to go wrong times 4 ...leaking seals in shafts ...4 air cut off valves... leaking gas feed in plenum .....many things

 

[Lobo]

everything has been gone over several times , the 35 on the jets isn't a dimension it's a flow rate , well that's the info I've gotten from several sources. I'll ask again , anybody have any press in idle jets for an 81? or 4 81 carbs.

 

[slabghost]

Lobo » Sun Dec 14, 2014 2:39 pm[/url]"1avhcst]
everything has been gone over several times , the 35 on the jets isn't a dimension it's a flow rate , well that's the info I've gotten from several sources. I'll ask again , anybody have any press in idle jets for an 81? or 4 81 carbs.

If 35 is the flow rate. I'd like to know just what rate we are talking. Ounces per hour? At what pressure? Funny, jets are numbered at the same as drill sizes. 35 is actually .035" or millimeters. :headscratch:

 

[Lobo]

well it wouldn't be inches , and several people told me the Japanese MFG doesn't use mm ,they have some kinda formula that relates to flow rate . if you look at this string you'll see one note I got on this . To add we had a guy in a shop measure them and he found mine to be .020" , and he said they should be about .014" . The 80-82 idle jets are not available from Honda , be a shame to junk the bike over 4 jets .

 

[dan filipi]

Lobo, how are you meaning running way too rich.
Gassy smelling exhaust, low mpg?

 

[zman]

You might try this link.
https://www.siriusconinc.com/pro-detail. ... ct_id=1107
Maybe Flanders as well.
https://www.flandersco.com/Products.html
Just so you know, they don't list the gl but it looks like the same size, Keihin isnt going to produce jets specifically for the GL, it will make them for all their carbs only the jet`s flow will differ.

 

[dan filipi]

I have long since suspected that jets wear and should eventually be replaced, though most if not all the oldwing carb rebuilders will insist they do not wear.

 

[slabghost]

Lobo » Sun Dec 14, 2014 3:49 pm[/url]":qkmedde5]
well it wouldn't be inches , and several people told me the Japanese MFG doesn't use mm ,they have some kinda formula that relates to flow rate . if you look at this string you'll see one note I got on this . To add we had a guy in a shop measure them and he found mine to be .020" , and he said they should be about .014" . The 80-82 idle jets are not available from Honda , be a shame to junk the bike over 4 jets .

Many options open. Replacing the jets is only one. Any good rack from 1000 or 1100 will fit and work. 1200 rack can also be fitted to work. How did you determine it's too rich?

 

[Lobo]

all of the above , Plugs carbon up after a few minutes,28mpg, raw gas in the exhaust. but........it runs like a striped ass ape , idles fine .

 

[slabghost]

Could buy a set of micro drills. solder your jets shut and redrill to the size you want.

 

[Lobo]

we've already picked up the drills . but saving that for a last resort.

 

[zman]

zman » Sun Dec 14, 2014 2:03 pm[/url]":3duf1ga3]
You might try this link.
https://www.siriusconinc.com/pro-detail. ... ct_id=1107
Maybe Flanders as well.
https://www.flandersco.com/Products.html
Just so you know, they don't list the gl but it looks like the same size, Keihin isnt going to produce jets specifically for the GL, it will make them for all their carbs only the jet`s flow will differ.

I didn't see the sold out notice, Well you have a part number now and a cross reference for bikes they use them on, I would search slow jets for these bikes on ebay..Maybe you can find a Honda 750 , 650,XL,TRX.
These are available but over seas, found them in #40 on ebay here in the states.
https://www.ebay.com/itm/Honda-CB-750-Fo ... 73&vxp=mtr

 

[joedrum]

i am absolutely sure the idle jets are .035 thousand hole ... in micro bit size like in jewlers bits its number 80 in size as in the way of doing it the smaller the number the bigger the bit ... if yours a .020 thousand then they need cleaned not reduced ...

 

[Lobo]

Jeff , thanks for the info , one question , the measurements on the Idle jet gave me the length but not the diameter , are all these pressed in idle jets the same diameter?

 

[zman]

Lobo » Sun Dec 14, 2014 5:44 pm[/url]":28j883l1]
Jeff , thanks for the info , one question , the measurements on the Idle jet gave me the length but not the diameter , are all these pressed in idle jets the same diameter?

I would think yes,They change carb dimensions but the jets usually don't change, just the orifice size changes. But I would want to be 100% sure myself so to find one that was removed would set my mind at ease.
Maybe you could PM him and ask the actual dimensions. Another round about way is to look at the microfiche and find the part number on the bike in question then look at the fische on your carb and see if the part numbers match.
You can also type in the part number on the honda dealer website and a list of bikes that part fits will come up, I know one dealer`s site does this..I think they all do.

 

[Lobo]

All good information Jeff , but one major problem is Honda doesn't consider the idle jet on 80-82 GW's to be replaceable . Hence they dont have a part number for it. Not exactly what you'd expect from Honda.

 

[joedrum]

lobo i agree with with you honda carbs are not what i consider good ....and none of my wings have them ...i dont know who fed you the info on honda idle jets for 1100 oldwing are .014 ...but there simply wrong period ... and your stuck on this being your problem... they are .035 ...you are asking ? here and people are trying to help ... but instead you are trying to teach us instead ..but its your bike that running rich and dont work right ... i dont know how many idle jets i have cleared with .035 drill bit ...1000s and 1100s and for yrs have had this bit for this purpose ..if you want to believe .014 idle jet as true i dont know what can be said to help you ...sending you new or used idle jet bigger than what you claim you have in your idle jets certainly is not going to fix your problem ... do you have the idle jets out of the carbs ...to me its obvious by your posts they are not drilled out bigger than there suppose to be