Dumb question help .

[T-TRAIN]

I am looking at trading my '06 kfx 400 for a '01 banshee, the owner told me it had a new topend and was bored 40 over, what is that ? If it's bored 40 over can be bored again if needed or would you have to replace the jug. How much can you bore one before it involves a lot of work ?

[00sheerzr]

I am looking at trading my '06 kfx 400 for a '01 banshee, the owner told me it had a new topend and was bored 40 over, what is that ? If it's bored 40 over can be bored again if needed or would you have to replace the jug. How much can you bore one before it involves a lot of work ?

 

thats seems like a decent trade .40 over means 40 thousanths of an inch which it was bored because the cylinder walls got worn , that it normal for all engines, it requires cutting the bore over to eliminate imperfections that the piston left some people say you can bore up to .100, i wouldt go over .80 or the cylinder walls get weak and tend to run hotter. stock jugs are easy to come by anyway, you can always go big bore

[T-TRAIN]

 

thats seems like a decent trade .40 over means 40 thousanths of an inch which it was bored because the cylinder walls got worn , that it normal for all engines, it requires cutting the bore over to eliminate imperfections that the piston left some people say you can bore up to .100, i wouldt go over .80 or the cylinder walls get weak and tend to run hotter. stock jugs are easy to come by anyway, you can always go big bore

 

What should I look for when I go test ride this thing ? Did the 2001 have any issues that stand out ? He said he got it because he always wanted one and when he got it it was to fast . It has fmf pipes/silencer and a boost bottle, where would you start if you were going to ride track/trails? (gears, tires its stoc other than whats above.)

[AKheathen]

first, look for how he starts it. it should need the choke and a kick or 2. using starting fluid or any "special tricks" throw a red flag, but starting hard could just simply be adjustment. popping is a really bad sign. check for major cracking in the rubber carb boots that the boost bottle mounts too. check the air filter and oil conditions, which will indicate the care he takes. check all pivot points and loose hubs. run it through the gears all the way to 6th. some hesitation or sputtering is normally just need of adjustment in the carbs, not indicating bad/weal engine. and, pick his brain about banshees and this banshee. service intervals, care, and shit, just take your time and look it through. a compression check would be tits. i would also closely inspect the spark plugs. the year of the bike doesn't really matter, other than age on it......oh, and stand back a ways and look to see if the frame appears bent front, back andhow the tank and radiator plastics line up, which will show roll-over or other impact damage