Wilson Manifolds now adds new flanged throttle body to their forced-induction EFI line-up. Wilson, the Fort Lauderdale, Florida, company with strong credentials in air induction, has expanded its throttle body range to include new flanged high-performance single-bore units for forced-induction EFI engines.

The flanged mouth of the throttle body is counter-bored to accept a machined aluminum mating ring. The mating ring is secured to the throttle body by a V-clamp. The other end of the mating ring is counter-bored to accept a 4-inch O.D. alloy tube, which can be welded to the mating ring.  The result is a smooth tubular pressurized air passage from the intercooler to the throttle body—no steps, no restrictions, no hose clips. On the throttle body face that abuts the elbow, an O-ring replaces a conventional gasket. Other advantages of these billet aluminum throttle bodies are their larger bores, the edge profiles and stability of their throttle blades, the rigidity of the joint between blade and shaft, and the smoothness of their throttle shafts in operation.  The shafts are set in sealed roller bearings. The roller bearings are press-fitted into the throttle body and retained by four circlips, two inner and two outer, for positive axial location. Wilson, whose singular focus for over twenty years has been the study of air-flow, has conquered air velocities not always by increasing parallel bore sizes, but instead by machining clever tapers in the bore walls. To dampen resonances and minimize deflections in blade operation, a new proprietary shaft is employed. Give Wilson a call.  They have a simple phone system without long wait times and knowledgeable human beings that are happy to help. Wilson Manifolds (954) 771-6216 www.wilsonmanifolds.com