Skunk2 Ultra Street Intake Manifold

From: $389.99

The Ultra Series is years of research and development, culminated in a multi-piece cast aluminum intake manifold that offers advantages that only a modular design could allow. Skunk2 Racing has created a two-piece modular design that allows for easy disassembly, porting, and plenum volume changes through the use of a removable plenum lid and optional plenum spacers.

  • Features:
  • Modular 2pc. Design w/ Removable Plenum
  • Rotatable Plenum Allows Driver-side or Passenger-Side Throttle Body Mounting
  • 1.8L Plenum Volume (Additional spacers available)
  • Tapered 8.72″(B)/6.85″(K) Long High-Velocity Runners w/ Raised Velocity Stack Entries
  • Generously Cast Runner Walls for Porting
  • 74mm(B)/71mm(K) Throttle Body Opening
  • Lightweight 356 Aluminum Alloy Construction
  • 2 x 1/8″ NPT and 2 x 1/4″ NPT Accessory Ports
  • Hi-Grade Mounting Hardware
  • Available in Black or Silver Finish
  • Thermal Gasket Included

Select Application and Finish for Specific Image

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Description

The Ultra Series is years of research and development, culminated in a multi-piece cast aluminum intake manifold that offers advantages that only a modular design could allow. Using the latest in CFD (Computational Fluid Dynamics) software; Skunk2 Racing has created a two-piece modular design that allows for easy disassembly, porting, and plenum volume changes through the use of a removable plenum lid and optional plenum spacers. In addition to CFD testing, the Ultra Series Intake Manifold has undergone extensive in-house dyno testing which has led to a design that is less restrictive, yielding both torque and power gains well over many of the competitors.

Skunk2 Racing Ultra Street Intake Manifolds are cast-aluminum, manufactured from high-grade 356 aluminum alloy for strength and lightweight. Each manifold is CNC-machined for a precise fit, and individually inspected for quality assurance. The Ultra Series Street manifold features a generous 71mm for K series and 74mm for B series throttle body opening and is constructed with thick walls at entry, minimizing concerns of breakthrough when port matching. Intense planning and design went into the plenum to distribute even airflow to all four cylinders under dynamic load conditions. Placement and design of the velocity stacks were rigorously flow tested to ensure maximum delivery of air to the cylinder. Large velocity stack raised bell mouth entries lead to 6.85” for K series and 8.72″ for B series long intake runners with smooth transitions allowing the Ultra Street Intake Manifold to really move some air!

B Series Notes:
Skunk2 designed the Ultra Race manifold for the B Series VTEC heads with a Dual Flange Bolt Pattern. This allows the manifold to be used with both PR3 Type R and Si heads as well as with the B18C1 GSR heads, ensuring perfect fit and easy ability to keep spare heads from all B Series VTEC Engines. Will not work with factory throttle body. A minimum of a 68mm throttle body is required. Kit includes necessary hardware for remote IACV using stock B series IACV.

K Series Notes:
Installation on the ’02-’05 Civic Si (EP3) requires several modifications. The radiator core support must be trimmed, the wiring for the TPS sensor may need to be extended, and clearance between the TPS and radiator hose may require custom upper hose or modification for the radiator. Coolant Bypass Adapter required for RBB(K24A) and RBC(K20Z3) heads.

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