Full-Race Nissan SR20DET Twin Scroll Dual WG Turbo Manifold

This auction is for a Full-Race Twin Scroll Dual WasteGate Turbo Manifold for a Nissan SR20DET (If you are unsure of fitment please contact us).

This is not your low quality typically "EBay" Turbo Manifold. Full-Race provides one of the most highest quality manifolds available, if your looking for one of the best manifolds available for the B Series then this is it! This is absolutely a 100% Genuine Full-Race Manifold

Full-Race's new-school approach to engineering and fabrication has set the "gold standard" for turbocharger exhaust manifolds and our state-of-the-art turbo kits.

Today, Full-Race is driven by a passionate, innovative and motivated group of enthusiasts who share a commitment to continued advancement in the field of automotive and turbocharger engineering. Due to this FR is notably hailed as the premier turbo manifold manufacturer worldwide.

Full-Race is proud to announce the release of the long awaited Nissan T4 twin scroll turbo manifold for your S13/S14. This manifold is Full-Race's answer to the most competitive market in the sport compact industry. Starting with a blank sheet of paper, utilizing years of race winning experience and new ideas, Full-Race engineers designed the twin scroll manifold from the ground up. The result is a manifold which can fit almost any twin scroll T4 (T3 Flange Available) turbo (up to a GT4094R) while maintaining all accessories (PS, A/C) and a full length radiator. Combining the ultimate performance and durability with Full-Race's legendary craftsmanship, this manifold can produce more power than any other configuration on the market and is sure to stand up to even the most demanding Nissan enthusiasts.

Key Design Features:

Flanged for "T4" Twin Scroll Turbo Housings - True Twin Scroll Design - T3 is available but may delay the order, please contact us for this.

Flanged for Dual 38mm or 44mm V-Band Wastegates (Please note which type you would like)

Retains Power Steering & A/C

Retains Full Length Radiator

Available in either STD SR20DET (SR13/S14/S15) Head Flanges or SR20VE (VVL Cyl. Head). Please note which type you would need

Thick Wall Stainless Steel Construction

The merge collector creates a turbulent free area for the exhaust gasses to enter the turbine housing in even pulses at high velocities.

Robotic TIG welding for ultimate strength and longevity.

Flange surfaces machined flat for a leak free seal.

2000 Deg. Black Coating Option is available for an additional $150 (Please contact us prior to purchasing to receive this)

About Twin Scroll / Advantages

Twin Scroll turbo system design addresses many of the shortcomings of single scroll turbo systems by separating those cylinders whose exhaust gas pulses interfere with each other. Similar in concept to pairing cylinders on race headers for N/A engines, twin scroll design pairs cylinders to one side of the turbine inlet so that the kinetic energy from the exhaust gases is recovered more efficiently by the turbine. For example, if a four-cylinder engine's firing sequence is 1-3-4-2, cylinder 1 is ending its expansion stroke and opening its exhaust valves while cylinder 2 still has its exhaust valves open (while in its overlap period, where both the intake and exhaust valves are partially open at the same time). In a single scroll AKA undivided manifold, the exhaust gas pressure pulse from cylinder 1 is therefore going to interfere with cylinder 2's ability to expel its exhaust gases, rather than delivering it undisturbed to the turbo's turbine the way a twin scroll system allows.

The result of the superior scavenging effect from a twin scroll design is better pressure distribution in the exhaust ports and more efficient delivery of exhaust gas energy to the turbocharger's turbine. This in turn allows greater valve overlap, resulting in an improved quality and quantity of the air charge entering each cylinder. In fact, with more valve overlap, the scavenging effect of the exhaust flow can literally draw more air in on the intake side while drawing out the last of the low-pressure exhaust gases, helping pack each cylinder with a denser and purer air charge. As we all know, a denser and purer air charge means stronger combustion and more power... but the benefits of twin scroll design don't end there. With its greater volumetric efficiency and stronger scavenging effect, higher ignition delay can be used, which helps keep peak combustion temperature in the cylinders down. Since cooler cylinder temperatures and lower exhaust gas temperatures allows for a leaner air/fuel ratio, twin scroll turbo design has been shown to increase turbine efficiency by 7-8 percent (faster spool, quicker response) and result in fuel efficiency improvements as high as 5 percent. It is wise to size the turbine housing A/R larger than the single scroll turbine A/R typically used!

---

IMPORTANT NOTICE: All Full-Race Manifolds come with a LIFETIME Warranty * Need a turbo or wastegates to go with this Manifold? Need other parts for your build? Contact us to receive "Combo" Pricing! *