Sounds like you need to adjust your air/fuel screws..

 

Ya, thats what I thought at first but it seems more in the needle than the screws. It's more noticable in the high gears, if I'm in 5th crusin at low rpm's it will babble a little and eventually load up and get worse until I throttle it to clear it out. It seems like lowering my needle again would really decrease my power cause I would then have it on the second notch and stock isnt even that low. What you guys think?

 

I would look at the plug after a reasonable run on the needle. White = lean, sutty and black = rich.
This past weekend, I had too lean my needles a notch after the engine started bogging / loading up when I lugged (low rpms higher gears) it a bit.....cleared right up after the change.

 

Hmm...what notch you got it on now? Is your engine stock? I checked my plug at an idle and it was perfect and tan but I didn't get a chance to check my top end and mid range.

 

Stage 1 and 10.75 JE.....Powerbomb header /w E-series with no end cap. DJ needles and Mikuni 175-177.5 mains, needles on 3rd notch from bottom with the factory spacer in tact. 27.5 pilots...and a Pro flo /w no lid.....I ride sea level too maybe 3000'.

 

Ya, thats what I'm curious about...Just seems like with such a built engine I wouldnt have to go so low on the needle, maybe its cause my mains are so big?

 

adjust your valves again, clean your carbs, and again A I R S C R E W S

 

Whats this? Someones actualy doing what everyone says won't work? Why are you running dyno jet needles and mikuni mains? What made you settle on this?

 

Ya, I was thinkin the same thing!

 

BIG BUBBA-i get a two quad length advantage in a race up comp hill at florence with the 10 paddle haulers as opposed to the 8 paddle.i have had many people tell me that 10 paddles is too much for my quad but at least for races like up comp hill they are a big help.i am probably not running with as much horse power as you so you would probably see even bigger gains.if you are talking about drags on the flats you will definitely see a decrease in top speed with the ten paddles so it just depends on what is more important to you the wins on the hill or on the flats.i just thought i would add my opinions since we have at least very similar set ups.maybe my wife and i will see you at florence sometime i would like to see that craycraft run.one last thought here, what all is in a craycraft 686 if you dont mind giving that info up.