Designed to fit with all three Zstory exhaust manifolds*, the line is made from 201 (austenitic) 1.25mm stainless-steel for its own protection and longevity, has a diameter of 63mm (2.5’’) and is composed of three parts (excluding the rear silencer/muffler).
Fitting to the manifold’s* Y-pipe collector is the centre silencer connecting to a short intermediate pipe fitting through the inverted ‘U’ in the differentiel front support before the ‘S’ pipe which passes around the rear of the differentiel and into the rear silencer/muffler.
Zstory kits are designed to fit no lower than the floor reinforcement rails and both 2x seater and 2+2 Zs.
Along the transmission tunnel, the line uses V-band clamp fittings for leak-free and quick/simple mounting/disassembly and at the ‘S’-pipe, a T-bolt clamp to allow the maximum adjustment flexibility.
The line is supplied with all necessary fittings ; clamps, straps, gaskets and nuts/bolts (where applicable) and Zstory holds stocks of fittings, gaskets or pipework in case of later street/road /competition damage or loss.
Depending upon its design and purpose, any exhaust system compromises something to give something else – no exhaust is ideal for all applications and at different engine speeds, different sized exhaust tubes are better than others… !
Two, small diameter pipes such as found on the S20 engine applications are best suited to a small capacity, high-revving engine to help generate low-end torque without penalising top-end power.
Engines with larger capacities have less need of extra low-down torque and strokers almost none, having ample quantities merely from their larger size.
Zstory has chosen its current diameter to be the optimum for the majority of (normally-aspirated) engine applications; big enough to exit the gases quickly and easily at high engine revolutions, small enough to give some back-pressure and increase low-rev torque.
Seperate pipe-work to allow for:
– easier initial fitting,
– partial dismantling for easier servicing under the car – clutch, gearbox, brakes, suspension 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.
⇒ Stainless-steel ensures a long life – fit and forget!
⇒ Complete kit – all included for home fitting.
⇒ Snug fit as high as possible not only to avoid snagging but low systems look ‘untidy’.
⇒ Great ‘finished-look’ for your Z!
⇒ Available in 2x seater and 2+2 versions.
⇒ 63mm / 2.5’’ diameter tubing throughout
⇒ First silencer of 380mm long and 100mm** diameter
Zstory exhaust systems are currently fitted to numerous competition cars – they have passed FIA homologation scrutiny but many more street, fast road and track-day versions also. It accompanies a wide range of engine sizes and states of preparation from L20As to the biggest strokers.
From 2017, whether 2x seater or 2+2, the Zstory exhaust line will be supplied without a rear silencer/muffler allowing you, the customer to choose your preference:
– Classic: the single-exit version
– JDM: the twin-exit version, commonly mistaken as a ‘Z432’ ; it was in fact optional on all JDM Fairlady Zs but OEM only on the Z432s.
Don’t forget to look at the rear silencer pages to choose yours and please don’t hesitate to contact me for advice.
*a new development in 2019 will see the production of a down-pipe to allow the Zstory exhaust line be fitted to an OEM exhaust manifold for those who wish to have a stainless-steel exhaust without removing their admission system and changing the OEM manifold.
**this silencer will evolve in late 2018 to become 127mm in diameter as the Zstory exhaust continues to adapt to ever-increasing noise limits.