81 gl1100 single carb using the motorcraft/weber 740?

[joedrum]

sounding good

 

[Ansimp]

dan filipi » Sun Jul 13, 2014 5:43 am[/url]":78jflk52]
Great.
Good mpg.

+1

 

[81 Gwing]

Ansimp » Sat Jul 12, 2014 5:40 pm[/url]":3aubv9tc]

dan filipi » Sun Jul 13, 2014 5:43 am[/url]":3aubv9tc]
Great.
Good mpg.

+1

sooo, maybe theres no need to install the 2/1 adapter

 

[dan filipi]

If it's running good how you want then why bother.

 

[81 Gwing]

dan filipi » Sat Jul 12, 2014 8:44 pm[/url]":29r810nk]
If it's running good how you want then why bother.

i know,but, i bought it so i have ta try it

 

[dan filipi]

Well you know me, I'd have to try it.
Might improve lower end torque.

 

[Ansimp]

If you have a good running system atm I would put some serious miles on the bike before changing anything. The Rats Nest has a second hand rack from a 200k of Alex80 that has only been bolted on and Steve and I didn't feel the need to do a carby sink or adjust the idle down ( 1400 warm 900 cold no choke). It is on my to do list but I have put at least 10k miles of hard riding with the current set up :yes:

 

[81 Gwing]

my MPG run today

 

[81 Gwing]

drillin the lil hole seemed to help the idle.(ill get the size later). what do these ports do that i circled..... i got it, top right is for the choke pull off,bottom left is for the power valve, whats the top left one fer

 

[joedrum]

i will look... one power valve vacuum....ones choke vacuum ... one is vacuum i think for altitude compensator

 

[81 Gwing]

just got a call from Tom(i thought he was on VaCa). hes shippin my AF plate

 

[81 Gwing]

[video]https://www.facebook.com/photo.php?v=10203978037962020[/video]

this is when i first got it runnin.....hear the vac leak :rant: i forgot to plug the one from the choke

 

[Ansimp]

:good: :salute:

 

[dan filipi]

Nice idle.

I love seeing the tach needle fly to the red zone.

 

[Steve83]

Excellent! Sounds great! :clapping: :salute: k:

 

[canuckxxxx]

joedrum » Mon Jul 07, 2014 5:34 pm[/url]":ik7ztezr]
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:

Might be something to do with how much the plenum is being heated. Tom has always stressed that these carbs only work right if the plenum is heated...a lot.

Brian

 

[81 Gwing]

my plenum is cold/wet on the out side for the first few miles. after that it warms up and dries off and warn to the touch. its gettin the heat off the engine AND taking hot air into the carb. its not like it has a cold air intake. the intake elbows,runners and hot and the plenum is warm. when i took the carb off yesterday i saw NO puddling in the plenum,in fact it was really dry

 

[81 Gwing]

just did another MPG test, idle jet #50, main jet(drilled with a 1.30mm bit) the air bleed and tube 220. went 85mi and took 1.9gal===== 44.7. stayed at 50/60mph most of the time

 

[slabghost]

Sounds like you got it just about as right as it can be. That is great mileage!

 

[Ansimp]

+1 :good: