banshee9090 Posted January 21, 2012 Report Posted January 21, 2012 good morning on my shee. 10mil, 66.5 bore i m still using stock carb. 320 main jet, pilot jet 30, needle, fourth groove,1 turn air screw,elev.2000. my spark plugs chop is OK, since i will be rich if i go with 330, 340 on main,what does bigger carbs ( after market ) do for my banshee? i know bigger carbs = more fuel, more air other hand stock carb. 330,340 mine jet with 2.5 air screw turn = more fuel more air ! why still some guys would recommend 39-40 crab. for my 10mil ? since 66.5mm bore is OK with stock carb. in my opinion benefit from bigger carbs ( after market ) start after 67mm or 68mm cylinder bore. Quote
beez33 Posted January 21, 2012 Report Posted January 21, 2012 More efficient. More fuel, more air = more power and better throttle response. Quote
RadarRacing Posted January 21, 2012 Report Posted January 21, 2012 WOW , any carbs would be better than stock on that motor. If you slow ride a lot or do MX type riding or trails than 33-35mm carbs would be good, if you do a lot of wide open riding then 38-41mm carbs. Bigger carbs make much more topend and midrange. Stock carbs are also not as easy to tune. I prefer Keihin PWKs over about any carb but especially stock. A larger bore by .040 or .080 will do very little for adding power to your bike. Quote
banshee9090 Posted January 21, 2012 Author Report Posted January 21, 2012 thanks guys for the advice i really need to buy big carb. to be more convinced. Quote
locogato11283 Posted January 23, 2012 Report Posted January 23, 2012 You should be running 35mm PWK's on that motor if not 39's. Those stock carbs are killing the motor. Quote
10milmike Posted January 24, 2012 Report Posted January 24, 2012 Wow Stock Carbs on a 10Mil, that's a new one, Run 39 PWK great carbs, I run 39 and 41 On my Both my 10Mils. Quote
springer Posted January 24, 2012 Report Posted January 24, 2012 to answer your question about why you cant just run bigger mains to add more fuel if a bigger carb will add more fuel, with a bigger carb, you are also running more air through there with the added fuel. just adding fuel with a stock carb doesn't allow you to add more air. you have to have both, air and fuel. with that motor, i would run atleast a 38/40 or 39's. Quote
WINDYCITYJOHN400 Posted January 25, 2012 Report Posted January 25, 2012 WOW, one of the first posts were a guy was actually running carbs that are too small! More times than not it's 35's on a stock motor. But stockers on a 10 mill? Yeah, time for new carbs. 35's for most any riding or 39's if it's more about fire roads or dunes. Quote
banshee9090 Posted January 31, 2012 Author Report Posted January 31, 2012 to answer your question about why you cant just run bigger mains to add more fuel if a bigger carb will add more fuel, with a bigger carb, you are also running more air through there with the added fuel. just adding fuel with a stock carb doesn't allow you to add more air. you have to have both, air and fuel. with that motor, i would run atleast a 38/40 or 39's. springer, thanks for alert me about the more air big carb. Quote
banshee9090 Posted January 31, 2012 Author Report Posted January 31, 2012 thanks guys i m convinced now Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.