[Greenbikemike]

I have done a search,but still have a couple of questions. Never played with a weber before, been chasing a spit out the carb off and on when I get time. Checked for intake leaks,didn't find any but went ahead and replaced the intake gaskets,no change.Its well supported.Checked jets and Emulsion tube[F11] and jets[125] plugs look good so I think its jetted ok,still get'n a pop once in a while out the carb. I haven't rode it to much and its only been 65 to 70 out and it does seem to like it warmer,also the outside intake gets condensation on it,I've read where they can frost up in cold weather,true?So,are they just cold blooded and I 'm chase'n something that isn't there.
I have looked up Scotts site and read some of Wagners....still learn'n....BTW this is a mild .10 over 74,little head work,BH cam,straight pipes with baffles,and Dyna s
Thanks,
GBM

 

[Slag Kustom]

what size is the weber 45, 40? what size are the venturies? im sure you dont want to hear it but the chromed webers maid in spain are nothing but problems.

 

[sixball]

A few things.......

Does everything match? Chokes, Venturi's and ALL the jets? You have to take them out and check. I've seen alot of the the chrome ones that were once part of a dual carb setup that were taken off and sold seperately. When running two of them, the chokes, venturi's and jets aren't always matched.

When running stacks, you have to keep in mind you are introducing more air. Have you tried it with an air filter on it to see if the spit goes away?

Also take a look at your air corrector jets.

Sixball

 

[Larry T]

I don't think anyone can give you all the info for tuning a Weber in a condensed version that will fit on the thread. They are good carbs, but they have 7 circuits (I think that's right) instead of the normal 3.
You're probably going to need to get a tuning manual to get close.
Larry T

 

[stumpworks]

if its spiting out the carb its a little lean that would explain the bike likeing the warmer temps. I never had mine frost up but yes it condensates all the time. I wouldn't be happy if it didn't. great carb but you need to take the time to tune it through out the throttle range. I have had mine on a 103 shovel a long time and i'm still finding power i didn't know i had. keep at it you should be able to get rid of the spitting. good luck.

 

[thegreasepit]

Spitting is just a lean condition. Figure out what throttle position (off idle, 3/4 throttle...etc) and check what circuit the carb is using to regulate fuel.

There's a couple different manuals on how to tune a Weber, and I'd suggest getting one: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias=aps&field-keywords=weber+tuning+manual

A quick search yields 6+ threads related to Weber/Dellorto tuning- perhaps we need an official thread for all related questions/tuning info.

 

[Greenbikemike]

Thanks for all the replys....

QUOTE=Slag Kustom;817482]what size is the weber 45, 40? what size are the venturies? im sure you dont want to hear it but the chromed webers maid in spain are nothing but problems.[/QUOTE]

Don't know what it is,40,45,can't find a # on it anywhere,thats part of the problem,I want to order a kit for it so I can pull the whole thing down...thanks

A few things.......

Does everything match? Chokes, Venturi's and ALL the jets? You have to take them out and check. I've seen alot of the the chrome ones that were once part of a dual carb setup that were taken off and sold seperately. When running two of them, the chokes, venturi's and jets aren't always matched.

When running stacks, you have to keep in mind you are introducing more air. Have you tried it with an air filter on it to see if the spit goes away?

Also take a look at your air corrector jets.

Sixball

Well,the jets and Venturis match,but without a rebuild kit I don't want to dig to deep yet. Haven't tried a foam filter,its on the list,on the air corrector jets,bigger smaller,what am I looking for? thanks

I don't think anyone can give you all the info for tuning a Weber in a condensed version that will fit on the thread. They are good carbs, but they have 7 circuits (I think that's right) instead of the normal 3.
You're probably going to need to get a tuning manual to get close.
Larry T

Oh yeah,a manual is the list,or a lap top in the shop! thanks

if its spiting out the carb its a little lean that would explain the bike likeing the warmer temps. I never had mine frost up but yes it condensates all the time. I wouldn't be happy if it didn't. great carb but you need to take the time to tune it through out the throttle range. I have had mine on a 103 shovel a long time and i'm still finding power i didn't know i had. keep at it you should be able to get rid of the spitting. good luck.

Well,I was thinking lean or intake leak,did a plug run and they look good,but that doesn't mean much cause it pops off idle,WOT its fine,thanks,

Spitting is just a lean condition. Figure out what throttle position (off idle, 3/4 throttle...etc) and check what circuit the carb is using to regulate fuel.

There's a couple different manuals on how to tune a Weber, and I'd suggest getting one: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias=aps&field-keywords=weber+tuning+manual

A quick search yields 6+ threads related to Weber/Dellorto tuning- perhaps we need an official thread for all related questions/tuning info.

Well,its is more off idle,sometimes at steady speed,and there is alot to this carb for sure,manual will be ordered,and I have searched the threads,good stuff,but before I dig to deep,I want check the easy[cheap] stuff,hell,I got a extra S&S E that I could throw on,and I know my way around that,LOL,
Thanks

GBM

 

[sixball]

You can measure the throats and see if you have a 45 or a 40 if the the numbers were polished off before chroming. There's really not alot of "digging" to do when checking that everything matches. Take the top cover off and take the emulsion tubes out and the jet stacks and verify they are a matched set. Also the butterflies should have some numbers on them and you can figgure out if you have a 40 or 45 by looking them up.

Sixball

 

[Greenbikemike]

Thanks again for the replies,just a little update,been busy with everyone else's bikes so haven't had alot of time on this,I have checked all the jets,tubes etc. and everything does match,followed the tune tips and got her better also,plugs look good,she does run better now that its warmer out,but still have a pop once in a while,get'n there,thanks again,
GBM