so i have just over 1000 miles on my new motor. the 1260 it bad ass. but i am starting to hear a humming sound. at first i thought it could be the differential so i changed the fluid. i wasnt then i noticed it sounds like it goes with the rpms of the bike. im thinking a crank bearing.(hopping...
well i had a sneaky suspition that i had a bad cylinder so i went ahead and checked all 4. 2 were good with 160psi and less than 10% for leak down and the other 2 were 140 and 20% or so for the leak down. now i think i might as well do the 1260 big bore. what do you guys think. and i might run...
