Race Header 1970-78 (240Z / 260Z / 280Z)


$936.00 USD

Shipping calculated at checkout

Zstory has continually strived to evolve the manifold to fulfill modern-day customer demands and had made it from 201 (austenitic) 1.25mm stainless-steel for its own protection and longevity. With less pipe welds and a thicker flange specifically trimmed to fit all heads and blocks, it allows for matched porting with improved-flow cylinder heads.

The 6-2 configuration is generally accepted as being the most suitable for the widest range of engine applications.  Zstory has further developed that conception with the 2-1 merging as far back as possible before the first silencer.

The Y-pipe (2-1) collector has a built-in lambda sensor plug and bung to allow accurate engine testing and real-time surveillance and finishes with a V-band clamp fitting to the exhaust line for leak-free and easy mounting/disassembly.

The manifold’s primary pipes have an internal diameter of 40mm. It is important to stress the internal diameter of the pipes because the earlier, cast-iron versions were measured externally and had thicker piping!

The mid-bore, primary and secondary pipes evacuate the exhaust gases and particles with a high-flow velocity rate which permits a quick throttle response and good torque throughout the low-to-mid power-band range which is essentiel for the small to mid engine sizes.

The equal-length primary pipes matched to a long 2-1 collector pipe, recreate a correct back-pressure (or scavenging effect**) to ensure an excellent exhaust flow but also an efficient inlet performance!

Seperate pipe-work to allow partial dismantling for:
– easier initial fitting,
– easier servicing under the car – clutch, gearbox and differential,
– the replacement of any pipework due to accident damage, especially competition and lowered-street cars,
– less expensive expedition to clients as packing is more compact.

⇒ Solid T-bolt and V-band clamps for a secure and leak-proof exhaust line.
⇒ A thick flange for the fitting with all inlet manifold types.
⇒ Stainless-steel ensures a long life – fit and forget!
⇒ Complete kit – all included for home fitting.