fast42racer
Member
Just getting back into karting and have questions. What valve springs do I need for box stock Predator 212 HF? I’m hearing you need to change the valve springs in them to race. Also is there any videos on how to do it or would having an engine builder do it be better. I am mechanically able to do it but just haven’t messed with these engines. 240 lb. driver if that makes any difference. Thank you for the help.