Drake Mcgiever Posted March 30, 2013 Report Share Posted March 30, 2013 i would guess the a average banshee when revving gets between around 10000 rpm but what would i have to do to get a banshee to rev past 8500 while being in 5th and 6th gear in other words i wanna be able to turn over allot higher rpms yes .....save your grumbling i don't know allot about big engine i know a little about small ones my rc boat turns over 17500 rpm yes that is still a small engine i know but my real question still stands but why do crotch rocket engines hit 12000-14000 but under load a banshee will not do it if this is possible to make my banshee hit alot higher rpms under load what will i have to do to make this happen Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted March 30, 2013 Report Share Posted March 30, 2013 What are your goals? ( besides just revving higher,there must be a reason you want to look into that) If we know what you are trying to accomplish,then we can suggest mods that will accomplish that goal safely. Quote Link to comment Share on other sites More sharing options...
Drake Mcgiever Posted March 30, 2013 Author Report Share Posted March 30, 2013 ok i want to be able to carry the power band past 10000 rpm if i could do that im talking faster speeds in lower gears and more torch also Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted March 30, 2013 Report Share Posted March 30, 2013 Problem is that when two strokes are made to rev higher, they are real weak down low. So if you wanna be able to run a high reving motor Jesus remember the consequences.... Less bottom end performance, more wear on parts. What kind of riding? And what is the current set up? It might be better to kinda find a nice medium. Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted March 30, 2013 Report Share Posted March 30, 2013 A safer way to more speed is more TQ and gear. Ultra high RPM is hard on components and durability. So you might think about building a motor that revs to say 9500RPM ,but can carry a lot more gear,and you'd go faster and have a longer lasting engine. Just an idea. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted March 30, 2013 Report Share Posted March 30, 2013 A safer way to more speed is more TQ and gear. Ultra high RPM is hard on components and durability. So you might think about building a motor that revs to say 9500RPM ,but can carry a lot more gear,and you'd go faster and have a longer lasting engine. Just an idea. Yes.Some guys will tell me I'm nuts for this, but running these motors at 10,500 for long periods will definitely start to destroy rings and even scuff the nickasil stuff. That means long duration high RPM stock or any iron bore for that matter wouldn't stand a chance. Once the Pikes Peak guys started messing with the CP stuff and actually carried those kind of RPM's they would start getting scuffed and chafed nickasil after only a few hill races. Quote Link to comment Share on other sites More sharing options...
joey83 Posted March 30, 2013 Report Share Posted March 30, 2013 Torque. Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted March 30, 2013 Report Share Posted March 30, 2013 Look at a modern 4 stroke piston. It's a glorified dime with rings. A banshee piston has height and mass. Running a Banshee motor at sustained high rpms over 10,500 causes piston tops to begin to lift away from the body of the piston, rings lift clearances change.......it's bad. Long story short.....don't try to reinvent the wheel. Your going to end up with more negatives than any gains would be worth. Quote Link to comment Share on other sites More sharing options...
sheerider1026 Posted March 30, 2013 Report Share Posted March 30, 2013 How about telling us your current mods. That way we know how fast you are already going.. For all we know its bone stock.. In that case a set of pipes, timing plate, and a rejet will put a smile on your face for a cheap fix.. Just sayin Quote Link to comment Share on other sites More sharing options...
joey83 Posted March 30, 2013 Report Share Posted March 30, 2013 How about telling us your current mods. That way we know how fast you are already going.. For all we know its bone stock.. In that case a set of pipes, timing plate, and a rejet will put a smile on your face for a cheap fix.. Just sayin X2. And it sounds like you just want more top speed. That doesnt mean you need a high revving motor. Quote Link to comment Share on other sites More sharing options...
coryv4 Posted March 31, 2013 Report Share Posted March 31, 2013 buy my turbo kit engine relines around 14k Quote Link to comment Share on other sites More sharing options...
sheerider1026 Posted March 31, 2013 Report Share Posted March 31, 2013 Wow 14k? Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted March 31, 2013 Report Share Posted March 31, 2013 We work on getting the highest RPM we can for our 1/4 mile Banshee. We have reached 10,700 or 10,800 on our fastest runs. It takes a lot of work to make that happen. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted April 2, 2013 Report Share Posted April 2, 2013 Take and cut about 2" out of your pipes Quote Link to comment Share on other sites More sharing options...
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