Monday 24 June 2019

FZR jetting

Just a quick note to document the change in the FZR after upping the jets to 122.5 and replacing the float bowl gaskets, also changing one of the float assemblies, as it was very loose. Anyway feedback is that there is a vaste improvement in pickup at medium throttle, and although at really high revs it is still buzzy, it is miles better,  I could maybe try a half size up - 125 again but it is good enough!

The T140 was making significant noise from the primary chain case so took it apart to find that the adjuster threads were stripped so no matter how much I adjusted it it never held the adjustment! The new one had a slightly larger diameter, so that went into the lathe to trim it down, but it is still sticking at some point and I haven't got to the bottom of it yet!


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