700sx vs. pro-x 600

so you wouldnt run the 140 mains? Also this may be a stupid question but dropping the needle down exactly what does that do?

Right now i have 142.5,142.5,143.8 in there right now

The jets that they list are 140, 141.3, 142.5
 

yamaholic22 said:
stock vipers are a good setup, just not as good as they can be ;)!
what do you recomend? just the same green spring and 53/43 helix everyone talks about? thaks!
 
03viperguy said:
what do you recomend? just the same green spring and 53/43 helix everyone talks about? thaks!
we were talking about the motor mounts. the vipers need a torque stop if you dont already have one.
 
ovalracer said:
so you wouldnt run the 140 mains? Also this may be a stupid question but dropping the needle down exactly what does that do?

Right now i have 142.5,142.5,143.8 in there right now

The jets that they list are 140, 141.3, 142.5

Run the 142.5's, no i would definately not go with 140 mains for general riding, only racing short distances. Dropping the needles leans out the mixture from about 3/8 to 3/4 throttle (controls mostly the midrange, but all circuits overlap). This will clean it up and make it snappier.
 


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