Watch out for imitations, our emulsion tube is the only jet holder. Direct replacement for H-D p/n 27101-88 jet holder. Available for all 1989-2006 Big Twin, Twin Cam, and Sportster models using Harley CV style carburetors. please leave comments, suggestions, or remarks good or bad. Unlike some aftermarket tubes, the Velocity Tube accepts both H-D factory and OEM replacement main jets for ease of tuning. and it acts like as I explained above.check the long brass tubes under the removable venturia housing.these are called the emulsion tubes. I wanted to post this in case u guys installed an old 2100 or 4150 Ford AutoLite Carb. I even understand that the emulsion tubes can crack for some reason. I had to remove the venturi housing (squirter) three or four times to get it to finally run correctly. I took a wire cleaned out the little vent holes. If it isnt bend the tab slightly to adjust. Float level setting: with the carb top cover upside down and the tab just touching the needle the distance between the top of the floats and the level of the top cover with the gasket in-place must be 12mm. Still acted stupid.Īfter reading an article, I believe on Ford Bronco. Re: Weber DCOE/SP emulsion tube selection/effects on power curve. Sprayed with carb cleaner, blew with an air hose. I took off the venturi housing and cleaned it out. I chased everything from the distributor cam gear, to the distributor modular from the wiring to the battery, to the starter, to the starter solenoid, I even cleaned out the carburetor several times. And at a constant speed, steady speed, like 55mph.and once I let off the throttle, engine would quite. The other factors are main jet, main air bleed (high speed in Holley talk) and the emulsion tubes (emulsion well and bleeds). Once I got the car rolling it would run fine except at high RPMs, again it would spit and sputter at high RPMS. The emulsion tube is part of the main circuit, if when your main circuit is activated the air / fuel mixture changes, then clearly the emulsion tube is one of several factors affecting. I had to flutter the throttle the entire time at a stopped positon. ![]() Take a light hammer and give it a firm tap from the top to pop the tube out through the bottom of the casting. The second way it slows the fuel's progression is with the air corrector jet and the holes in the tube. 3/32), so it bottoms out against the end of the 6×32 tap inside the tube. The wider the tube is the tighter it fits against the main circut galley, therefore the less fuel it allows by and the leaner the mixture. I had spitting and sputtering at low RPMs. Then insert a 2.5 to 3 inch piece of piano wire (or thin tool steel) that will slip, without binding, into the top end of the emulsion tube (ie.
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