High-Performance Manifolds For Unlimited Racing Applications!
Made from T6 6061 billet aluminum, each manifold is custom designed and cnc machined to +/- .003" accuracy. Billet manifolds provide precise and balanced geometry, resulting in equal air/fuel distribution to each engine cylinder for optimal volumetric efficiency. Utilizing 5-axis aerospace machining processes allows for the creation of contours and controlled surface finishes that are impossible to duplicate by hand fabrication.
All of our manifold development starts with the fundamental principles of fluid mechanics in conjunction with actual testing via cfd analysis, flow benches, the engine dyno, and track data for measurement in error and improvements. Analyzing all of these variables carefully is where product refinement, knowledge, and experience increases with each manifold we produce. We consider every customers manifold a R&D project. We base the foundation of products and applications around these principles as a result of feedback from engine builders, tuners, dyno technicians, and racing teams. We will not push our theories on anyone. We simply provide what each customer wants and demands, with factural suggestions on potential improvements based on test data provided by the customer as related to their engine performance configuration.
WHY CHOOSE OUR MANIFOLDS OVER THE COMPETITION?
1.) Our manifolds are CNC machined to +/- .003" accuracy. This is impossible to achive by hand fabrication. We have inspected and reverse engineered several of our customers sheet metal manifolds where the port locations are off by as much as .100", and runner trajectories that deviate 2 degrees off of the cutomers initial specifications. This is a direct result of welding distortion. Both dimensions are very critical to getting optimal volumetric efficiency from a motor.
2.) All of the components of our modular billet manifolds are 100% modular, and replaceable. The interchangabe runner feature, which is unique to this application, as well as th eplenum spacer, allows for induction system modifications. Our manifolds are designed and manufactured with the entrance radii on the runners, or can be integrated into the plenum if requested.
3.) To the best of our knowledge, we are the only modular billet manifold manufactuer that has the ability to change runner lengths. Contrary to what are competitors will try to make you believe, there is no "hand fudging" about this application. We have carefully developed a process through meticulous calculations and geometric relationships to create this feature. We know other manfactuers have been asked to provide this similar application from their existing customers. Some may succeed in producing this feature. The ones that don't will try their best to convice you that this application can not and does not work.
4.) We have worked with and/or consulted with some of the top engine builders and cylinder head/manifold developers in pro stock, including Warren and Kurt Johnson, Frank Iaconio, and Roy Johnson and and each has concluded that modular manifolds are the future of high-end induction development.
5.) Our manifolds can be purchased individually, or in volume quantities.. Volume orders, which include a discount, are ideal for engine builders who sell multiple engine packages, and lease identical motors to several race teams.
6.) All of the data you provide to us, along with the 3D CAD/CAM files we create to prodcue your intake will always remain proprietary. Having all of this info saved on our secure computer network will also make future modifications much more simple. We do not have to start over from "scratch" when producing similar manifolds for your future engine combinations.
E-Runner Port Manifolds
E-Runners are elliptical shape entrance runners. Elliptical runners produce higher velocity speeds than traditional circular port intake runners. Higher velocity means an increase in volumetric efficiency and increased power. E- Runners are available for both our complete modular manifolds, as well as our individual intake runners, billet banks, & sheet metal billet bank manifolds.
Modular Billet Manifolds
"The R&D Manifold!"
Modular billet manifolds are machined from T6 6061 billet aluminum, and have +/- .003" accuracy, with zero welding distortion. The detachable intake runner system, and plenum spacer, allow for easy induction system modifications on the dyno, or at the race track.
Each modular manifold ships fully assembled and includes:
- Plenum & Plenum Spacer
- Modular Tandem Runners
- Plates (Flange, Galley, Top)
Pictured: 400 Cubic Inch Modular Billet Manifold (Australian Pro Stock)
Single Plane Billet Manifolds
Our single plane billet manifolds are made from T6 6061 billet aluminum, and are custom designed specificlly for your engine application. Billet manifolds are ideal for single, 4 barrel carburetor applications, and offer several advantages as compared to high-production cast, sheet metal, and single top, tunnel ram manifolds. While cast single plane manifolds are effective, you are limited to the amount of customization, because of the fixed plenum, as well as the fixed sizes and contour of the cast runners. Sheet metal single plane manifolds have high welding distortion, and have difficulty maintaining the consistency of the runners sizes and curvatures. Single top tunnel ram manifolds are effective, but often struggle with air/fuel distribution on the perimeter cylinders 1, 2, 7, 8. Utilizing CAD & CFD software, we can custom design the plenum, runner sizes, and runner curvatures that will optomize air/fuel distribution for greater volumetric efficiency.
Facts & Features:
- Constructed of T6 6061 billet aluminum
- Designed for minimal welding distortion
- Custom designed runners for increased carburetor signal and optimal air/fuel distribution
- Fully CNC ported
- Lighter than cast intake manifolds
- Quadra-Seals included
- Plenum contouring available for optimal air flow
- Machined injector boss' available
- Available for block sizes up to 5.3 bore spacing
Pictured: 5.0 Bore Space Single Plane Manifold (Super Comp/Top Dragster)
Pictured: Small Block Single Plane Manifold (Little Chief Cylinder Heads)
Billet Bank Sheet Metal Manifolds Now Available!
Williams Engineering is now fabricating billet bank sheet metal manifolds. Billet bank manifolds offer similar performance advantages as compared to our full modular billet manifolds, at a more affordable price. Available for both small and big block V-8 applications. Tunnel ram designs are only available at this time. Call us today for pricing on your specific application!