messey2000 Posted August 23, 2006 Share Posted August 23, 2006 The carbs on my xs 850 have jets numbered 1.22. the book recommends 1.45. Do you think changing to the big size will help top end power. Link to comment Share on other sites More sharing options...
Moderator drewpy Posted August 26, 2006 Moderator Share Posted August 26, 2006 The carbs on my xs 850 have jets numbered 1.22. the book recommends 1.45. Do you think changing to the big size will help top end power. I'd book 10 mins on a dyno. that will give you your settings. Link to comment Share on other sites More sharing options...
phillipw Posted August 26, 2006 Share Posted August 26, 2006 Is it not performing correctly or are you just after MORE ? What colour are the plugs, at full throttle ? I see it's a trike, what air box / filter have you got ? Changing the main jets for larger ones will only affect 3/4 to full throttle. It may be correctly jetted for you partitular airbox / exhaust comination, what rear end have you got ? Could it be a final drive gearing issue ? Link to comment Share on other sites More sharing options...
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