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Jetting for Blaster?


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I know this isn't a blaster site, but i was getting no responce from blasterhq.com so i came here.

I have a 2000 blaster with a K&N filter and a FMF fatty pipe, i was wondering what this should be jetted at. I run it with the air box cover on and It boggs down in the midrange. What size main and pilot jet size should i be running, and should i be adjusting the air screw at all?

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  • 2 weeks later...
My Blaster is running a 260 main and a 32.5 piolet. The stock size main is 220, and 32.5 for piolet, so do you think that i might have to change the pilot jet a little, or just need to adjust the air screw?

Try running it with the air box lid off with your current settings and see if the bog goes away. My wifes blaster ran good with a K&N, air box lid off, & FMF pipe. In my short experience with blasters they seem bog like a SOB when they are only 1 or 2 sizes too rich on the mains and seem to be more sensitive to elevation and temperature changes than the banshee. The typical range on the main jet for a Blaster with an FMF pipe, air box lid off is from 260 to 280 depending on supporting mods according to the research I did. Stock needle position is 2nd or 3rd clip from blunt end depending on the year (even through the motor and carb stayed the same, 2nd clip for up to 01' I think)

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