81 gl1100 single carb using the motorcraft/weber 740?

[dan filipi]

Getting a smooth idle can be challenging.
Mine is still not as smooth as I'd like but it's very good.

I am at 50 idle.
What helped the most was drilling a 1.5 mm hole in the throttle plate. This let more air be drawn in at idle.
Sounds strange but it worked.

 

[81 Gwing]

then wouldnt going to a #60 help??

 

[dan filipi]

81 Gwing » Mon Jul 07, 2014 6:25 pm[/url]":1nidufk5]
then wouldnt going to a #60 help??

#60 would give it more gas but not more air.
Part of the problem here is there is a transition idle passage which is NOT adjustable like the idle mix screw is so there is no way to control gas flow from it.
By all means try a 60 and see what it does.
The secondary idle jet has a #60 on it. Swap that with the primary idle #50. This way theirs no drilling of the 50 so you can move it back after trying it.

 

[joedrum]

did this today
[video]https://www.youtube.com/watch?v=4n_o8uTwtUY[/video]
this is the best hooch has done done this is with 45 idle jet...mine has 9/64th hole drilled in plate

 

[dan filipi]

Sounds real good Joe.
Idling nice, and coming back to idle nice too.

 

[Ansimp]

dan filipi » Tue Jul 08, 2014 1:53 pm[/url]":2pvhq0vh]
Sounds real good Joe.
Idling nice, and coming back to idle nice too.

+1 :good:

 

[81 Gwing]

Ansimp » Tue Jul 08, 2014 4:51 am[/url]":2fqpkwk2]

dan filipi » Tue Jul 08, 2014 1:53 pm[/url]":2fqpkwk2]
Sounds real good Joe.
Idling nice, and coming back to idle nice too.

+1 :good:

sounds good

 

[81 Gwing]

theres sompin missin

 

[Ansimp]

Looks like you are missing 3 carbies :smilie_happy:

 

[81 Gwing]

joedrum » Mon Jul 07, 2014 8:34 pm[/url]":178ovbcy]
great ...funny how the jetting changes seem different from bike to bike ... certainly no where neat stock jetting ... glad you got it going good :clapping:

thanks joe

 

[81 Gwing]

is my vacuum advance hooked up the the right port???? i think i saw a pic where it was hooked to the other one i believe

 

[joedrum]

the right side is the vacuum advance port ...

 

[81 Gwing]

found it

 

[81 Gwing]

joedrum » Wed Jul 09, 2014 8:11 am[/url]":2zp6ltf2]
the right side is the vacuum advance port ...

thats what i thought

 

[81 Gwing]

whats the part number of the 2 ta 1 adapter?? 2025? i thought i ordered it

 

[81 Gwing]

BBT came today :yahoo:

 

[81 Gwing]

just did a first road trip with the 740...130mi took 3.1 gal==== 41.9

 

[dan filipi]

Great.
Good mpg.

 

[81 Gwing]

that was alot of 50 ta 70 drivin. got into the secondary a few times

 

[krakum1967]

Ugh, I cant wait!!!!!


I have to go pick up some bolts that went stray on the radiator, but I am getting there!