Project FD RX7 Restomod: Part 26 – BorgWarner EFR Turbo System and TurboSmart WG

To install the turbo system, we first had to start at the exhaust ports.  We used a light bead of Max Temp (750*F+) gasket maker on both sides of the Mazda Exhaust Manifold Gasket (P/N: N3A113461).  These gaskets are currently $150-220 each!

We then bolted the Turblown Engineering Investment Cast 347SS T4 Twinscroll FD3S Turbo Manifold with their Inconel Heat Shield to the block, along with the Semi PP Lower Intake Manifold.

Next, we insulated the Semi PP LIM from heat with Turblown Engineering’s Inconel RX7 Lower Intake Manifold Heat Shield and test fit Turblown Engineering’s D-Type B2 Frame 1.05 A/R T4 Flange EWG Turbine Housing Heat Shield onto the turbine wheel of our BorgWarner EFR 8374 turbo.  Note, we are only test fitting half of the turbine heat shielding.

Thermal management is one of the biggest issues for rotaries.  I am surprised that there are not more builds that utilize heat shielding, especially when there are such amazing and effective products out there such as Turblown Engineering’s Inconel heat shields.  Protecting the lower intake manifold from heat and keeping it cool will greatly improve horsepower and reliability, yet this is often overlooked.

Turblown Engineering’s 700 series Inconel heat shields use a combination of Inconel Alloy and Silica based insulation to incorporate an additional insulating air gap between the housing and the shield producing an extremely efficient thermal barrier.  Another benefit to these heat shields are they promote natural thermal expansion and prevents damaging post shut down heat shock from the exhaust.

Now that the BorgWarner EFR turbine is mounted, we can start work on fabricating the exhaust system. Stay tuned!

BORGWARNER

TURBLOWN ENGINEERING – TURBOSOURCE

TURBOSMART

BILLET ROTARY

BILLY JOHNSON RACING