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Top Mount Turbo Manifold (T3+T4 Dual Pattern 46mm) - Honda B-Series

BXEX-10121

WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

BLOX Racing’s Top Mount manifold (featured here) is available for Honda B-series engines and features a unique dual-pattern turbo inlet flange.  This industry-first will give the customer the choice of starting with a T3 turbo and later upgrading to a T4 without having to purchase a brand new manifold.

The manifold also features a V-band wastegate flange that will accommodate 44mm, 45mm and 46mm sizes from most popular brands.

Manifolds are constructed from Schedule 40 T304 stainless steel and TIG-welded.  The 11mm thick flanges provide additional strength and rigidity.  The 4-1 design provides equal pressures across each cylinder to ensure maximum flow and quicker spooling for larger turbos.  With this design, the turbo and related parts are easily accessible.

Turbo Manifold Specs & Notes

  • T304 stainless steel; Schedule 40
  • Mandrel-bent tubing; TIG-welded
  • T3 & T4 dual pattern open inlet flange
  • 44mm-46mm wastegate V-band flange
  • 11mm thick flanges
  • 4-1 design; equal cylinder pressures
  • Can accommodate up to T4 with H-cover
  • Cannot use factory A/C
  • Power steering bracket requires modification
  • Requires 1/2-size radiator or tucked radiator set-up