ptevo03 Posted August 11, 2008 Report Share Posted August 11, 2008 i have a 99 banshee with 2 in to 1 dynoport exhaust pro design cool head 21cc domes v-force 3 reeds adj. timing plate i want to set at +4 28mm keihin carbs elavation 919ft i dont know what compression im making because the head is off and the 21cc domes are coming. so what size jets and etc....... im running 93 octane and 32:1 is this ok? thanks for any info Quote Link to comment Share on other sites More sharing options...
mdhc500 Posted August 11, 2008 Report Share Posted August 11, 2008 Admins... Sticky this!!!!!!!!!!!!!!!!!!!!!! BenBB's Jetting FAQ is a must read for newbs and people with Jetting questions... Please read this document before asking any jetting questions... You can still ask away, any question you want to ask, but you must read this first... LINK----------> <HERE> http://www.dfn.com/benkaren/jetfaq.html This is a document from BenBB... And its really helpful! Quote Link to comment Share on other sites More sharing options...
mdhc500 Posted August 11, 2008 Report Share Posted August 11, 2008 (edited) i have a 99 banshee with2 in to 1 dynoport exhaust pro design cool head 21cc domes v-force 3 reeds adj. timing plate i want to set at +4 28mm keihin carbs elavation 919ft i dont know what compression im making because the head is off and the 21cc domes are coming. so what size jets and etc....... im running 93 octane and 32:1 is this ok? thanks for any info If everything else is stock, and your mods are all the ones above then give this a try to start... Go 4-6 sizes larger on your mains, try your needle clip on the 3rd position (middle) and keep your pilots stock and your idle screw 1.5 turns out. This will be a good starting point. Do a plug chop and adjust from there. When you get your mains dialed in perfect you can play with your needle and pilot circuits if you are getting any mid or off idle bog. Stick with adjusting one circuit at a time. Good luck! ...and read BenBB's Jetting FAQ... Its good stuff! Edited August 11, 2008 by mdhc500 Quote Link to comment Share on other sites More sharing options...
ptevo03 Posted August 11, 2008 Author Report Share Posted August 11, 2008 thanks and ill read it right now Quote Link to comment Share on other sites More sharing options...
ptevo03 Posted August 12, 2008 Author Report Share Posted August 12, 2008 well since reading that, i have a few things to add dual K&N's (no air box) Procom CDI box Ricky Stator Coil and Wires Quote Link to comment Share on other sites More sharing options...
ptevo03 Posted August 12, 2008 Author Report Share Posted August 12, 2008 also it didnt say if i had to add in for bigger carbs? and i bought these carbs from someone and he took the jets out i guess so i would have to jet them and not just put the carbs on and then blow my motor and blame it on him. so i dont have a start jet size to go up from. Quote Link to comment Share on other sites More sharing options...
mdhc500 Posted August 12, 2008 Report Share Posted August 12, 2008 also it didnt say if i had to add in for bigger carbs? and i bought these carbs from someone and he took the jets out i guess so i would have to jet them and not just put the carbs on and then blow my motor and blame it on him. so i dont have a start jet size to go up from. I could not offer any advice for jetting bigger carbs... Maybe PM a member here that has bigger carbs listed int heir mods, or maybe shoot BenBB a PM and see if he could point you in the right direction.? Quote Link to comment Share on other sites More sharing options...
ptevo03 Posted August 12, 2008 Author Report Share Posted August 12, 2008 I could not offer any advice for jetting bigger carbs... Maybe PM a member here that has bigger carbslisted int heir mods, or maybe shoot BenBB a PM and see if he could point you in the right direction.? ok thanks and if anyone else can help please do. Quote Link to comment Share on other sites More sharing options...
mdhc500 Posted August 12, 2008 Report Share Posted August 12, 2008 ok thanks and if anyone else can help please do. I would let everyone know what carbs they are as well... Quote Link to comment Share on other sites More sharing options...
ptevo03 Posted August 12, 2008 Author Report Share Posted August 12, 2008 i did in my first post with the other mods. Quote Link to comment Share on other sites More sharing options...
ptevo03 Posted August 12, 2008 Author Report Share Posted August 12, 2008 bump need help!!!!!!! Quote Link to comment Share on other sites More sharing options...
250psd Posted August 13, 2008 Report Share Posted August 13, 2008 Great link! Is it running or not? What's your specific problem? Bog down low, missing ect. You won't blow your motor instantly with a misjetted carb. Quote Link to comment Share on other sites More sharing options...
ptevo03 Posted August 13, 2008 Author Report Share Posted August 13, 2008 Great link! Is it running or not? What's your specific problem? Bog down low, missing ect. You won't blow your motor instantly with a misjetted carb. well i havent got it running yet because the guy i got the 28mm carbs from took the jets out. so i need a close idea so i can get some jets ordered and go from there. Quote Link to comment Share on other sites More sharing options...
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