Jim

Maybe they didn't know 25 meant 2500cc's. They also stipulate no V type engines and that inline 4 cylinder engines were allowed only. Probably goes back to Illinois rules somewhere.

A simple more simple statement saying that bore and stroke must remain as the particular engine was manufactured with .040 over bore allowed for wear. Instead of listing of engine on top of engine. Going to take a little time and consideration to get it all down. "KISS" trying to close all the loop holes usually mean that you simply leave one or two really big obvious ones in there. Stock motors change dimensions yearly. The rules need to address this. There is no real need to set everything in stone because the manufactures do this for you anyhow. Lets consider the life time of a motor to be 3 or 4 years. In that time new and better motors come to the market place. Why keep the old motor if you can up date to the newest trick motors even if they are smaller and maybe force fed. Times change and it should always be cheaper to buy new low mileage motors instead of dropping an arm and leg into a worn out old school motor.

Racers have simply not thought this way in the past. They generally had so much money in that old motor that they raced they would simply just welded in a patch put in a new sleeve and piston set and rod set grind the crank and go back racing. Now days junk yard motors have come such a long way in performance that this approach is not thinking logically. How would a bone stock Pinto motor compare to a new 4 valve motor as far as being ready to race right out of the car. But then if people were logical they probably would not be racing in the first place.

Honest Dad himself