The Demon Tweeks | Yokohama Classic Stock Hatch Championship
'Retro Hatchbacks', available for sale in the UK prior to January 1992. Up to 1400cc multi-valve and up to 1600cc two-valve-per-cylinder. There is a minimum weight including driver; the winning cars are ballasted. Tightly controlled regulations ensure great racing!
The original engine may be rebored by up to + 1mm. No modifications are allowed. ‘Blue-printing’ is as far as you can go.
Standard configuration and pick-up points; springs may be uprated and lowered. No 'rose-joints' or 'rod-ends'; only single-adjustable dampers; standard anti-roll bars.
Standard discs and drums, no cross-drilling or grooving; no ABS unless standard; friction material is free.
Standard gearbox and ratios and final drive for the model must be used. No LSD or similar; no traction control.
Control tyre is the Yokohama AO48R. Rim width and diameter must be standard for the model.
Classic Stock Hatch has 14 rounds; all will be ‘double-headers’ either on one day, or spread over a weekend.