Athena big bore 490 jetting - Honda Motorcycles - FireBlades.org
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post #1 of 2 Old 10-07-2008, 9:17 PM Thread Starter
 
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Athena big bore 490 jetting

Just installed an athena 490 big bore kit on my crf450r. Just wanted to see if anyone had any suggestions for jetting. I heard you would want to jet down leaner to around a 155 main jet, when 170 is stock. I would think you would want to go with a bigger main, but i guess with the big bore it draws in more volume which needs a smaller main or some mumbo jumbo like that? idk... Any input would be appreciated. Thanks!
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post #2 of 2 Old 10-08-2008, 12:17 PM Thread Starter
 
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Re: Athena big bore 490 jetting

No one, Really?
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