laloualfa
XS650 Member
I rebuild the engine of my XS-650C 1976 lately, change piston,pin, big cylinder,chain, bender, Xs performance rocker arm set
with the hex screw valve ajuster from Mike XS.
the poblem I have is the valves clearence don't stay ajusted for a long time.
after 100km the bike starts to make big noise from the top of the engine
after checking, the clearence was off
exhaust should be .015 is now .035
intake should be .002 is now .003
after reajustment i took a ride and samething happened.
I'm starting to suspect the new hex ajuster screw, maby the iron is not hard enough or bad quality.
I noticed that the metal of the lock nut is not the same color as the screw and also that the difference in clearence is greater on the exhaust side than intake.
I own that bike from new (44 years) it is not the first time that i adjuste the valves on this bike and it is the first time this has happened to me.
has this ever happened to you?
thanks
with the hex screw valve ajuster from Mike XS.
the poblem I have is the valves clearence don't stay ajusted for a long time.
after 100km the bike starts to make big noise from the top of the engine
after checking, the clearence was off
exhaust should be .015 is now .035
intake should be .002 is now .003
after reajustment i took a ride and samething happened.
I'm starting to suspect the new hex ajuster screw, maby the iron is not hard enough or bad quality.
I noticed that the metal of the lock nut is not the same color as the screw and also that the difference in clearence is greater on the exhaust side than intake.
I own that bike from new (44 years) it is not the first time that i adjuste the valves on this bike and it is the first time this has happened to me.
has this ever happened to you?
thanks