i just got my top end re did on my banshee by gettin a port job, bigger forged pistons, a bore job, and v force3 reeds and my friend just re did his bottom end by gettin a 4 mill crank and he beats me every time in the quarter mile drag race? do any body know wat else i can add to beat him and can anybody tell me the role the crank play on the bike tht allows him to catch me every time

 

You could try a set of O-Ringed Heads with interchangable domes like the ones that Dennis Kirk sells for the Banshee and try running a higher compression ratio.A set of bigger carbs with some free flowing airfilters and a modified airbox would probably help also.

Next you could try running a set of tires that are made for the terrain that you are riding on to help with traction and make sure that you are putting all of your power to the ground.You might also be able to see an improvement in how you run if you play around with your gearing on your front and rear sprockets.

A Dyna FS Ignition with the programming software might also help you at this point.With the Dyna FS you can alter your timing curves and you might see an improvement.With the Dyna FS you can also add a shift light and program in shift points so that the light will come on and go off at a set RPM and you will be more consistent with when you shift.

 

thanks for the advice and im new to the racing scene and many people try and take advantage of that because im only 18 but my rider is a vet and he says that i need the slicks for the asphault. What do you think about this?? and he also told me about the sprocket change but my bike already have a aftermarket sprocket so what size do you think will b the best for the quarter mile???

 

For dragracing on an NHRA or IHRA Dragstrip I personally like to use a dedicated drag tire that is designed to get sticky after a short burnout and with a sidewall that is designed to wrinkle like these from Mickey Thompson Mickey Thompson Performance Tires & Wheels.

On my Sport I use the 19" Mickey Thompson Jr. Dragster tires for 1/8th mile dragracing, but would go with a taller tire if I were racing a 1/4 mile.Here's the tires that I use

From what I've seen on several different forums the American Racer tires seem to be really popular with the majority of the Banshee dragracers but I don't have any experience with those tires myself.Tires can get expensive so you might be better off talking with some of the manufacturers and telling them about your setup and the type of racing that you're going to be doing and seeing what they recommend.

To get your gearing right it's just going to take some trial and error.For 1/4 mile dragracing you'll probably need more gear, but you'll have to do some testing to know for sure.You're best bet would be to go to the dragstrip on a Test and Tune night and take several different sprockets with you.As long as you stay with the same or bigger size rear tires I would make my first pass with the factory sprockets and see how you run.Depending on how you run on that first pass you might want to go up or down a size on your front sprocket.

I think that you can go two teeth up or down on the front sprocket with the factory length chain before you run out of adjustment, but I might be wrong.Also if you are running sticky tires on an IHRA or NHRA dragstrip that is prepped with VHT you will probably want to invest in a quality chain with a high tensile strength rating just to be on the safe side.A well prepped dragstrip will give you some serious traction and really put some stress on the chain.

 

thanks for the advice and i visited the mickey thompson web site but couldnt find were the four wheeler tires were

 

The Mickey Thompson link that I posted is just for their dragracing tires, which is mainly for cars, but you can use them on ATV's with the right size wheel.The tires that I use are the 19' Jr. Dragster E.T. Slicks and I've actually seen video's of people using the dragradials before on ATV's with very good results