Snipe99

We raced on a back county road for about a 1/4 mile. The tires I am running are Mud Sharks. I rode the clutch to get the rpm's up before my launch and hooked up and on the pavement I did not have a traction problem. I caried the front wheels about 10 feet about 12inches off the ground. If I done a better launch I would win and vice versa. He getting a new full exaulst system in a few weeks so I will be behind him on that race. Does the Coolhead offer and peformance gains or just help your engine run cooler thus making you power that way? Also the V3 reeds that I hear many of you are using should I invest in this item?

So you think thats the problem? Why would it run so good and have a perfect plug readings and have good top end and bottem end? They may not be 35mm carbs I bought this quad from a friend and all this was on the quad when I got it from him. If they are not 35mm carbs where on the carbs can I check to see what mm they are? They are the Keihin PWK style carb. Im going off of what I was told when I bought from him.

How is this possible? I dont have to most modded up shee but dang. This YZF450 is bone stock I thought I would pull away at least but we stayed neck and neck all three passes. He's stock I have Toomy's T5 and Kihien 35mm carbs K&N filter with stock heads stock reeds. My jetting is #155 mains and pilot is #45. Is the YFZ450 just a fast 4stroke quad or what? If my shee was stock I would have been smoked I do believe.

Just a quick question I noticed the other day when I started my quad When I let out on the clutch it was real smooth and operated just fine. After I rode for a bit and it warmed up then when I let out on the clutch my quad shook and vibrated like it was wanting to grab as I let out on the clutch. Could it be time to look into new clutch for this thing ?

My carb does not look like the ones you have pictured. It looks simular to that but not the extra vents you have on that carb. I will take my carbs with me tomorrow to the atv dealer I will find out just what model of the Keihin carbs I do have so you can get a better idea of what im working with. Also Im hearing quite a bit about clip position. Im not sure I follow you guys on that term. What is this adjustment on the carbs and what does it change? where is it located on carbs to change the positions? Im sorry for all the questions but this is something I need to learn If I want to get the best out of my quad I guess. Thanks for all the help so far very helpful to me.

Thanks for the info I have the PWK's carbs on mine. as for the needle im not sure. I will check on that tonight after work. What needle should I get also I will just buy all I need while im there Saturday morning. I found a ATV dealer about 30min from my house that has all the jets that I need for the Keihin PWK carbs. My question is should I get a few extra size's other than what you mention'ed. Like you said I need 150-160 should I also get the 170-180 jets too? same deal with the pilot jets you said 42-48 should I get next set up also?

OK I took my carb apart to clean again. My main jet is #182 that sound like that may be the problem that sounds a bit small for the mods I have on quad mentioned in earlier post. The pilot jet is #55

Ok guys I tried to get the info you needed to help my issue. Also thanks for the links it all helps I need to learn about my quad im grateful to you guys for that info. Im new at the Banshee thing so here is what I found. It has a Toomeys's 5 pipes and mufflers. A K&N filter with the cover removed from filter box with just the bag around filter. I did not remove the Main Jets yet so I dont know what that are. The pilot jets are #55 I did look at them. Also I do believe they are 35mm Keihin carbs. It has what I guessing a boost bottle Not sure if thats factory or thats aftermarket item that comes on stock. I know this is not much to go on but the guy I bought this from it was all done when he bought it. I will try to get more info this week for you guys thanks again for all your help.. Snipe

I just got this quad today and knew getting it that it needed some carb attention. I was able to clean the carbs and get it running but now it wont rev out. It gets so high the breaks up and stutters and has no top end. Riding at low rpm's its fine and has good response. If you get on it hard it bogs out and breaks up. What am I missing could this be a simple adjustment? Quad only has minor mods. new full exaulst system and the carbs were put on to match up with the exaulst setup. Was told ran fine when last riden 6months ago. I put fresh fuel and now im not sure where to start. Any Ideas???