We had a couple karts the 1st year 4-cycle raced at my track that would sit there going blap-blap-blap in pre-grid, running stock class weight....obviously flat top pistons and big cams in there. Their dad swore up and down they were legal <big name builder> motors that were $1000+ each, yet when the track owner threatened a visual tech and cc check of the top 3 for the next season they stopped showing up. Funny how that works. We've picked up about 4 more regulars and the class continues to grow now that the bad apples are gone.
Dodgeram....time to get the racers together and protest that engine if you feel it is illegal. Bring a tech pamphlet, the cc testing equipment, check the carb bore, and check the coil to make sure it's a GREEN 6100 rpm one. I've been hearing the quickest easiest trick in the book is to simply swap in the WF or Animal coil for increased RPM.