Originally Posted by Corse-R

.....trying to 'equalize' or at least to slow some costs associated with racing. Many years ago was the biggest stupidity with the infamous 12 turn limit on Touring cars who opened the doomed 'search for the n milivolt more on the batts', later was the 7mm crank bore and the 'turbo scoop' that in few days, deemed illegal almost all the .12 engines that were on the market (and of course, the need of buying new engines).