The end of the 2007 racing season is in its last throes. I have had several 998-based race engines returned for their post season post-mortem, and I have very good news to report.
The most arduous scenario the 998 engine could possibly see is that of the Class One Grass Track racing fraternity. Read more
The design concept for this new range of pistons from Mini Spares raised a few eye-brows at their introduction almost a year ago now
However, the design was arrived at after consultation with a couple of very learned and experienced A-series engine specialists and the piston manufacturers concerned – themselves a highly rated company that produces extremely hi-tech pistons for all manner of piston-driven engines including the mad, seriously engine-punishing world of 'drifting' cars tuned to run at extreme rpm producing extreme levels of BHP for protracted periods. Certain features of the piston and ring pack from pistons designed for these 'drifting' car engines were employed, receiving most attention of those used to more familiar, old school spec designs. Most completely over-looked the quality and material/heat treatment spec of the piston itself. A very durable, very high silicone content material heat treated to a specific requirement ensures tough, reliable and long-living pistons.
Read moreCombined with the C-AEG644 offset rocker bush set, a further 0.030” valve lift may be attained.
It is not advisable to use just the posts on their own, as the rocker pad may fall off the valve stem at full lift. This will almost certainly occur with the latest sintered type rockers. These rockers are identifiable by their very angular shape and •'5f”AF lock nut.
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The specter of 'unleaded fuel only' - instigated in UK on January 1st 1999 and seemingly from decades ago across the rest of the world - seems to be forcing more and more folk into frightened, panic orientated action. And Mini owners are featuring heavily in this. Read more
For the very good and simple reason it minimised airflow obstruction by having the least amount of material in the way. Very plausible, and a design that many have stayed with to this day - surprising considering the magnitude of expertise housed in the more recognised A-series tuners. Probably something along the lines of 'if it ain't broke, don't fix it', or perhaps (and more likely?) 'Can't teach an old dog new tricks'.
However, as time and technology progressed, man's ever-inquisitive nature started to determine more exactly what and why - and airflow activity was not passed over. Not only 'how much' was being measured, but 'where and how' to further determine where improvements could be made. After all - it has long since been realised that the engine is essentially an air pump. The more you get in, the more you get out, so improving the air's tortuous route to the cylinder has to help. Read more
The specter of 'unleaded fuel only' - instigated in UK on January 1st 1999 and seemingly from decades ago across the rest of the world - seems to be forcing more and more folk into frightened, panic orientated action. And Mini owners are featuring heavily in this. See bottom for useful part numbers. The situation not at all being helped by all sorts of conflicting information from 'leaned' sources, such as lead levels in humans has declined greatly since 1935 - despite the rapidly expanding ownership of petrol-burning vehicles. And benzene and toluene used in unleaded fuels are cancerous. Still, the powers that be are relentlessly forcing through the 'no heavy metals in fuel' bills, not being at all put off by such trivia. Not surprising bearing in mind the complete debacle on the catalytic converter front - the type decided on for world wide and universal use was developed and tested in California! Read more
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