Post by caferacercarl on Dec 14, 2007 2:56:49 GMT -5
It shouldn't ping if it has the new style of wiseco, [rounded top] if it has the flat top and sharp sides of the old type, you will need to upgrade piston unfortunately, try richening up the needle as if it pings on anything but wide open throttle, thats the target circuit. stock head has from memory about a 63cc chamber,will check that tomorrow. just did a bike from brisbane that came in a box on a semi, it cost the guy heaps less than the petrol that would have only got him half way!! or, you may need the Q0 needle jet from the XT,TT [very cheap]
regards Carl
regards Carl