IDF Emulsion Tubes Thinking Outside The Box

[@billyb6043]

Really enjoy and appreciate your videos and the way in which you explain what you're aiming to achieve. There's so much anecdotal and contradictory information regarding the best way to get webers to run at their optimium. One combination will be great for one engine under certain conditions and unresponsive on another, even if the two engines are very similar on paper, so people end up throwing a bucket load of money at a problem they don't fully understand, or make too many changes simultaneously, and lose track of what the results mean. There's no substitute for data, and actually monitoring what's going on one change at a time. It would be really interesting , once you're happy and you've dialed everything in, to take your bug to a reputable dyno and see how their figures compare to yours. I don't doubt your real-world results in any way, but it would be a useful means to assess the accuracy of the wideband and other equipment used to monitor your progress. Keep up the great work; you're helping folks like me get to grips with a complex subject. Best wishes from the UK

[@doglao1236]

Hi Sera!! my city is plent of hills , then, when I drive to up hill, the side by side pair of webers will change the inclination of fuel inside the fuel bowl carburator's that rich the rear emulsion tubes and weak the front emultion tubes. Think that, the inclination plus accelerations increasy this behavior. the ideal position of webers is assembly the carburators like a single weber , but this is impossible to find a pair of manifoulds intake with this caracteristics to buy them. My City is Varginha MG Brasil with a lot of hills that almost of times that I drive climbing and down the hills to a simple short track daily.

[@vintage76vipergreenBeetle]

Nice info.👍

[@Motor7710]

Thank you

[@huskynox1]

It would be super interesting to see what happens if you went with a 3-hole tube, basically eliminating holes 2 and 4. I wonder if the fuel curve would get 'flatter' (more X/Y equal) and richer...? Old Holley carbs came with only 2 emulsion holes, now they're coming with 5 (race-carbs) and are tunable (replaceable emulsion jets in each location). A lot of guys block off the extra holes and only tune with 2 or 3 locations.

[@patar7999]

Cool stuff, I would love to see your tricks with a centermount for us baja guys.

[@Motor7710]

Video is coming for exactly that but with a bigger 39mm carb

[@patar7999]

@@Motor7710 cool been playing with my IDF today…it’s a center mount on a 1835cc with 8.6 comp stock style dual port high rev springs, solid shafts … lightened flywheel and 110 style cam. So I was doing the F7 emulsions it drove but no matter what I did it had a burble at 3000 plus or minus .. about when the idles give out. No matter how I did my float .. it’s there. So I tried the F 11… and with 28 vents 210 airs and 135 mains it’s very responsive and driveable. Just a 3rd gear slight burble … some say its maybe the cam and the long intake runners. “Reversion”

[@tanorichi]

Hola Sera. Que buen experimento. Voy a probarlo en mi motor de 6 cilindros, 3800cms3, que uso solamente para pasear. Quiero agrandar el agujero de ralenti porque en mi caso está muy rico en ralenti sin importar cuanto achique el surtidor de baja. Espero tener tus resultados. Abrazo y saludos desde Argentina

[@Motor7710]

Suerte amigo

[@OTTO-1303]

Great vid. Does Weber offer an emulsion tube that matches your drillings?

[@Motor7710]

No they don't. I think they should.

[@13badbrad1]

Great job, your mileage is rivaling that of fuel injection. All your carb mods are very useful and to think you made these from the Chinese copycat’s, you are a very smart feller.

[@jimmywilkinson9190]

Next winter change the cam to a Web performance set up .

[@Motor7710]

I've actually been thinking about that.

[@Corvidoextraviado]

En lugar de andar agujereando no seria mejor buscar unos emulsores mas adecuados? Pregunto...

[@Motor7710]

El problma con todos los tubos de emulsion es que tienen la corona. La corona fue diseñada para los cams que tienen la duracion arriva de 240deg. Eso alluda suplemtar mas gasolina para esos cams que incrementa do el poder HP. Cams pequeños basicamente no necesitan esa extra Gasolina. So la repusta es Weber no lo tiene. Saludos, Sera

[@swarner414]

Love your videos, I have a 68 bug, 1776 w/ the clone carbs. I'm running rich, reset idle screws, and that helped. but I think my main jets are too big, no numbers on them so I don't know what I'm starting with. I saw you soldered and re-drill main jets, probably a dumb question, but when I hear jet size, what measurement is that? is it thousandths of an inch, millimeters, etc.

[@swarner414]

Hey, do you have a suggestion for me on what size jets, idle jets, air correction, etc. for 4,500 elevation?

[@Motor7710]

Sean Size is in millimeters like 130 main jet is actually 1.30mm jet. A 50 idle is equal to a .50mm As far as what size jets to run I don't know. But if you have a wideband in your car you should be able to tune it your self just remember that your AFR should read between 12.80 to 14.50 in normal driving target would be 14.00. Wide open throttle about 12.80 to 13.10 target would be 13.00. If you don't have one go to thesamba.com and ask what sizes jets to use your setup. Sera

[@bayern0001]

pozz..which mixer should I use so that my car revs better to break up the mixture because it's too rich now...I can't get it to work from the intake or it's too little or too much..now I'm at 8000rpm afn 11.5.currently I have an f2 mixer

[@Piratelifebbq]

Is that a 1mm drill bit?

[@joshpaulschram]

I have a weber dcoe on a stock 1600cc that is dripping out of the main jet at idle. With motor off and fuel pump on it doesn't drip into the throat. When running at idle , butterfly shut, it drips out the main jet into the throat. Emulsion tube not letting enough air? What do you think?

[@joshpaulschram]

kzbin.info/www/bejne/g2WuZZVunpt-jNUsi=enhlv_Z9IG1CQFkQ

[@joshpaulschram]

No drip with motor off. Fuel pump on. kzbin.infop14Zrc171zY?si=YudCch68MT_HVwmH