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Discussion Starter · #1 ·
Alright. So i have a ruby...i built it as a kit around 2 years ago... since then the poor girl has run and run and run...now its time to be retimed due to wear...and i think i am so far from square one that i will never get it right. And of course all of that great info about timing her in the manual is gone... SO PLEASE HELP :) :) :)

Matt
 

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110 Posts
Discussion Starter · #3 ·
Alright well here is the follow up... i followed all the directions and got 'er running great again at max speed- a million hehe. BUT now she's got a little knock to her stride. What could this be? A sign of wear maybe? Or is there a fine tuning adjustment to be made?
 

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Knocks are sometimes caused by over-travel of either the valve piston or power piston. a rod is either too long (piston hitting the cylinder head) or too short (piston hitting cylinder rear cover).

Other times is it caused by a worn/oblong bearing slapping the rod/pin interface.
 
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