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Discussion Starter · #1 ·
hello,
i´ve bought a Yoshimura Kit included a pair off camshafts, cdi, carb jets etc for my Gsxr Srad 600 1999 race bike.
The kit also included valve springs.
2 different types of them.
8 double red springs
8 single green springs
The red springs are almost the same as original. 3.2mm vs 3.1mm the green are higher and thinner like 3mm now my question is,

What springs are intake and what spring is exhaust?

Iput some photos with the serial numbers and documentation. unfortunatly there is nothing written about the springs. hope you can help me with this as the race season is soon gonna open 🙂.
Greetz
Angelo
 

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I'd guess that the dual springs go with the bigger lift and presumably larger intake valve. But you really ought to ask Yoshimura. It sounds like the springs and cam are sold separately.
 

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Discussion Starter · #4 ·
How did it work out for you?
since we didn't get an answer with 100% certainty, we chose to use the original valve springs.
this works well for the time being, the engine runs like a rocket with the new camshafts in combination with larger nozzles and full race exhaust line
 
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