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 helkp 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.
Don’t forget to look at the rear silencer pages to choose yours
and please don’t hesitate to contact me for advice.