Flathead ???


New member
Ok I'm new to kart racing. Bought kart and motor together the motor has been ported and polished carb work not sure what and head has been milled and a dyna cam I need to know what class this motor is ?
All the flathead classes from stock on up can be ported and polished, but if it is using a stock carb it's either stock or stock appearing. To get a better idea what you have pull the head, stock cams only lift .233 when rolled thru, that's not much and any stock appearing will have more. Jon
Run it on a tach if it reads 10,500rpm it is a limited with a HL 360 or 348 alcohol carb on square fuel pump or round mukini and separate fuel tank. Now if it runs over 7,200 rpm it is a stock appearing with bore out mod B&S carb with the fuel tank. If it is easy to start with rope pull it is probably stock