In rebuilding the motor for my 250sx I realized the cam and journals were were in bad shape. I picked up a high school shop motor that was never ran but do not know what 250cc quad/atc it was from. Does anyone know how to identify the cams in these 250cc motors? The only ID marks I can find are dots. The sx has 5 dots and the shop motor cam has 2. I can take pictures when I get home if that will help. Thanks all.