ok at the moment running an out the box engine from new its now 6 months old so nice and loose valve springs are g4 de-baffeled exhaust tappets are 3 and 4 oil is cool power im talking getting ready for racing not just starting in karting his chassis is project one, my boy is 7 comming on 8 yrs old been to a good few meetings as spectators appears to me these engines being used are far quicker than what we have we have a magnum clutch also am i better off having his engine upgraded or buy a new race prepared or selected parts ? get the drift of race prepared and selected parts and where the other parts go but would a company so big want to get a bad name by doing that i thought the parts went on to be made into corprate engines seems maybe the diffrence between race prepaired and selected isnt that great correct me if im wrong cheers
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