Emulsion Tube Break Down.. F-7's/F-11's

[RailBoy]

Well, have some thing that brings my attention here to the forums.. Only reason why is that I have heard and seen multiple explanations of what the different Emulsion Tubes do, this is in regards to the F-7's and F-11's specifically...

Well I am not going to get into what I have heard in comparisons to one another of the F-7's and F-11's, but I will say I learned 4+ different ways they work and this is in contrast to one another and overlapping each others function, so, that said there is no one story that is the same, so, like to hear which does what and see verifiable facts on this info, for, like I mentioned, heard 4+ different ways they work, each doing each other function and so one, and also at different RPMs levels....

Thanks for your time and like to hear what is up with how these Emulsion Tubes work as well as opperating characteristics of them.... RB

[modok]

try the innovate forums

[RailBoy]

Ok, guess it it time to do some reading, thanks for the resource Modok, you came through again appreciate it... RB

[SGKent]

if the question is what do the emulsion tubes do, they are designed to assist with the mixture curve. That is what I recollect but it has been 30 years +/- since I tuned Webers at the track for top performance.

Books:

'Weber Carburetors - Theory, Tuning and Maintenance' by John Passini. ISBN 0-947981-67-5

or Haynes Weber book ISBN 1 85010 020 9

Here is from another thread on the subject. http://speedtalk.com/forum/viewtopic.php?f=1&t=13640&start=0

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[modok]

Far out dude

[SGKent]

[modok]

Yeah, ok. I will stick to posting things from books, safer that way.

[Augsburg57]

In my forum search research on Weber 40 IDF jetting and set up, I notice most recommend the F7 emulssion tubes. My engine builder used F11's and my motor (2017cc in a 67' Split Window Bus) runs great.
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'67 VW 11-Window Standard Bus, 2027cc Stroker with Dual 40 IDF Webers

[mark tucker]

I was going to switch tubes in mcarbs then I went from 1874 cc to 2332,and set the float level and they work fine now.they worked fine befor but the 44's were a little harsh transfering to the main circut with small cc motor & kinda low level.& to much jet. I was used to 2 holly 830 cfm carbs on my v8 & had never seen a idf type carb. I kinda likes them now that there easy to do.just get a good book, I got the cb book, dont know witch is better , but just knowing the basic's of what does what & how&why.and there easyer than what I was used to . and if I ever do another setup for my v8 stuff it may get 4x 51's

[Dale M.]

This is what the WEBER Tuning Manual says about (purpose of) emulsion tubes...

Dale
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All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...

[gerg]

I found this book to be a great resource and learning guide:

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Gerg

. . . I got 99 problems and my bus ain't one . . .

'65 Sunroof Beetle
'65 Vert
'60 Singlecab

[Dingleweed]

http://www.thesamba.com/vw/forum/viewtopic.php?t=397421
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1962 Dune Buggy, 2332cc, W125, 44x37 wedgeports, 48 IDFs, Rancho Pro Street transaxle