Throttle Body Set 41/46mm – for Increased Performance Engines

Description

Set of throttle body for higher performance engines.The difference from the stock throttle bodies is the channel diameter and the throttle valve diameter.The port diameter to the cylinder head is 41 mm and the throttle valve diameter is 46 mm.Often the standard throttle bodies are simply machined from top to bottom to a larger, constant cross-section in order to increase the air flow.What appears to be correct at first turns out to be counterproductive when you look closely at the flow velocities and various cross-sections.The background to an increase in performance is the increase in the degree of delivery, which in turn is one of many parameters based on the constant acceleration of the sucked-in gas column.However, this effect only occurs if the cross section in the intake duct decreases constantly, but at least remains the same and in no case increases.But that’s exactly what happens if you take into account the narrowing of the cross-section due to the throttle valve shaft in the air flow and the vertical throttle valve.What sounds very theoretical here can be clearly proven using production bench measurements, so that our throttle valve housings, regardless of whether they are standard or performance-enhancing, basically have an inner contour that tapers conically behind the throttle valve shaft.Only this special contour, which all original throttle bodies also offer, ensures a constant to increasing flow speed of the sucked-in air column in order to prevent any loss of performance due to decreasing flow speeds.Of course, the suction pipes mounted on the throttle body must also match the cross sections, but you can also order them in cross sections of 46 mm (to the throttle body) and 48 mm (to the intake funnel).