Airzona noob checking in
- Thread starter scottcolbath
- Start date
Welcome to the Forum!
cowboy4evr
Member
The EVO is one of my most favorite HD motors . It took me 2 yrs to figure out why , in a solid mounted frame the motor vibrated . I had bought a 1998 Heritage Springer and the vibration was excessive . Everyone said it was the flywheels . That Harley didn't do a great job balancing them . I was told to add a " harmonic " balancer to the flywheel and that would solve the problem . That to me was " treating the effect " and not treating the cause . Further research told me that Harley matched the pistons in weight to within 5 grams . That to some sounds great but to me , it was not tolerable . I tore down the motor and bought a set of KB (Keith Black ) racing pistons . They were matched in weight to within 1/2 gram , big difference . THAT ! ! ! solved the problem . It was very very smooth bike to ride . I later used JE Pistons and even liked them a little better . Those pistons come in std compression ( 9-1 ) and the high compression was (10.25-1) if I remember correctly . I rebuilt 6 evo's with complete success using the new pistons , some std compression and several with the high compression pistons . You can't believe the difference it makes till you try it . Regards Paul
leonardocarrillo
Member
Welcome to the forum from Argentina.
OP
scottcolbath
Member
Hello, Leonardo. My girlfriend's daughter in law is from BA. It's likely I'll be visiting Argentina in the future, so the daughter in law can show her new baby to her father. We plan on making it a family trip, with a bunch of us flying down and spending a week.
S.C.
