Mikko Nassi wrote:
Alex that's a lot of interesting insight! When I raced in an 85cc category we actually had the cc checked after the race and this was simple club-level racing where most drivers were on 5-year old chassis. It was done by pouring a nifty liquid into the engine and then pouring it back out and measuring it - really fast and no need to even open the engine. Also great suggestions to control it - I'm a big fan of sealed engine with tight control.
The cheating when my son was racing was more complicated than a simple increase in cc. The rules were "standard engines" - a good idea as it would reduce costs.
But with "standard engines" even small mods made a noticeable difference. The usual methods were high speed crankshaft bearings, small improvements to the ports, increasing compression ratio through shaving the block and so forth.
The main problem is the way the rules were policed. The clubs usually took the path of least hassle - let everyone race, post the results and see what happens. This had the effect of transferring the responsibility to the parents - "if you do not agree with the results then you should protest".
Most competitors are very reluctant to protest. After racing for a while you become friends with the others. And who would like to earn a podium spot through a protest on a friend?
So preparing for every race became an ethics test - should I cheat? How much should I cheat? Can I get away with it if I cheat? If I do not cheat my son will be left far behind...
Raja Razman had the best solution of all - when he ran the KBS races he stripped all the podium finishers, without exception. Caught a few cheaters, even one in Rotax Junior with sealed engine in the first race meeting.
For the next meeting lap times of some competitors dropped noticeably, so you can draw your own conclusions...