![]() Dyno tests by brad, moto and others say you get somewhat less power with these filter types, but for a stock bike it doesn't seem to make a lot of difference at the red line. In fact, if you just place your finger anywhere near the edge of the top of the velocity stack you'll see power drop off due to the disturbed air flow pattern. In my mind (there’s been a lot of debate over this), when you fill up a large portion of the airbox volume with an aftermarket over trumpet foam filter you change the resonance characteristics of the air box and the air flow pattern at the trumpet inlet. That’s why Ducati put the filters in the air runners in the first place. The stock system has several times that amount of air downstream of the filter in the airbox ready to enter the velocity stacks unimpeded. This will result in more misfires (missed combustion events) 'till the air-fuel mixture normalizes. Otherwise, when you crack the throttle open, it'll run rich until the air upstream of the filter gets moving. ![]() In the auto industry they use a rule-of thumb that the filter should be placed far enough away from the butterflies so that you have an open air volume equal to 130% or more of the engine displacement in order to assure a "nil" vacuum restriction within the air filter system. ![]() When you crack the throttle open there's an instant demand for unimpeded air. The principal reason for selecting the Pipercross instead of an over trumpet filter design is their better throttle response, the ability to respond rapidly to rapidly changing air-fuel mixtures. PLEASE CONTACT US FOR ANY OTHER INQUIRES OR QUESTIONS.Click to expand.The issue is not that over trumpet filters reduce power, they don't - at least, not significantly. Once the Velocity Stacks are installed and before tightening the 6mm SHCS, Adjust the Position to your needs, then tighten the bolts to secure the position. You may remove your existing Weber 6mm studs if its easier to use the provided SHCS (if your carburators have the studs). Velocity Stacks and Four Filters, Pre Assembled with Eight 6mm Staineless Steel SHCS. )Įach Kit Comes complete with Four 45 Deg. Mounting Flange Bolt Pattern is 2 X 65mm ( 2.56in. Please Specify Type and Carburator Size ( BORE ) This Kit Can Be Fitted To Other Brands Of Side Draft Carburators As well, Such As SOLEX, SK and DELORTO. Weber Side Draft 40 DCOE / 42 DCOE / 44 DCOE / 46 DCOE / 48 DCOE and 50 DCOE. WE ALSO SELL SPARE PARTS FOR FUTURE REPLACEMENT. ![]() THE AIR FILTER ELEMENT IS NESTED IN A NYLON HOUSING FOR EASE OF REPLACEMENT AND CLEANING, IT SECURELY SNAPS OVER THE DIE-CAST VELOCITY STACK.ĪLL PARTS ARE OF THE HIGHEST QUALITY. THE FILETER HOUSING AND MOUNTING FLARE ARE MADE OF DIE-CAST ALUMINUM ALLOY AND IS POLISHED TO A HIGH LUSTER FINISH. THE SWIVEL DESIGN WITH THE 45 DEGREE BENTA LLOWS AN INFINITE-POSITION ADJUSTMENT. THE FILTERS HAVE A SWIVEL DESIGN WITH 45 DEGREE BENT THAT ALLOWS IT TO BE USED IN TIGHT ENGINE BAYS WITH CLEARANCE ISSUES. IT IS SPECIALLY DESIGNED AND DYNOED FOR WEBER SIDE DRAFT CARBURATORS FOR MAXIMUM AIR FLOW. THIS IS A NEW PRODUCT DEVOLPED BY CORSA VELOCITA LLC. This Kit Will Fit ALFA ROMEO 4 Cylinder DOHC Engines With Side Draft Carburators. WEBER VELOCITY STACK AIR FILTERS FOR WEBER 40 DCOE TO 50 DCOE SIDE DRAFT CARBURATORS. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |