Hi I recently purchased a 98 Blaster which is in great condition and got it for a very good deal. It has 240 kit on it i am not sure from who. It also has khelin carb I believe 35mm, k&n intacke, oil block off kit, fatty pipe with silencer. I must say the bike is pretty quick. I acutally go riding once a month if that, and yes i have been told if i want a faster bike go with a bigger bike, but i must say for the money i bought it for and i know they are not expensive to work on it is worth it for me. With that said i saw some post on the internet saying the were blaster bored to 265 even 280. I can tseem to find any kits like that. They were also saying how with the 265 kit they were keeping up with banshee.. I wouldnt mind being the guy pulling up with a blaster and giving the bigger bikes a run for there money. Basically I am lookign a an experience person on 2-strokes/ blaster/ yamaha to tell me how to get this done, If it can even get done. My next question is what is the maintenece with having a big bire kit?( How often do you need to rebuild it such as pistons rings etc...) Again I really want to make this little bike a big beast and yes i am sure some of you may be laughing but that is ok, If so you need not to reply!Please understand I am the type of person that likes to work on projects, taking things apart and making it better. I could go out a get a brand new bike but to me that isnt fun to me I am very mechanical. All you do in ride it and put it away. I prefer working on the bike and little by little making mods to it. Just like getting an old beat car and turning it into a hot rod. I put a ohlins shock in the rear which needed mod to the chassis and mounts, bikes rides like a charm. Bought the shock for 250 and is worth 725 not a bad deal. It also has extended swingarm+4 and +2axle. I put on 20 tires adn converted hub pattern to 4/115 in rear for ground clearnce and 21 in front.(The terrain could get really rough where i ride in PA too bad they just shut down, it was a great place)
So again if anyone could help it will greatly be appreciated. Please let me know if anyone has heard or even knows who carries a 265 kit or is it custom. Also give me your feedback, I am sure with the info i provided you with, you can now paint a picture of what i am working with
Thank you for reading my post
Joe G

 

I beleive what the people are talking about is a stroker kit. Do a search on ebay for blaster stroker kit. If you dont know what a stroker is its a crank that travels up and down a few mm further to allow for more power. With all those mods and a stroker you should be able to beat some stock/slightly modded shees.
Something like this will give you what your looking for....

http://cgi.ebay.com/ebaymotors/YAMAH...QQcmdZViewItem

Also consider getting your milled head to .020 over for premium pump fuel or .030 over for race gas.

Check out this forum as well, its new but has great potential www.blasterforum.com if you tell them i sent you they will give you a cookie.......... ok, i lied about the cookie part.

How did I forget a port job! Check these guys out... http://groups.msn.com/RBRacingTwoStrokePorting

 

For every milimeter of stroke you add on a blaster you actually gain 3.5 cc`s to your engine.The added cc`s are a added plus..but the real benefit from running one is the added torque your motor will have.You will have to have a port and polish if you really want to take advantage of a stroker in the blaster because you changed the charateristics of the stroke of the engine.Blasters are a 2 stroke motor so you just can`t swap out cams or adjust the timing because they don`t have any (well there is a adj. timing plate but you don`t want that headache).Piston position at the bottom of the stroke and the top of the stroke is critical....this is called port timing.

there is also another option that will give you a increase in torque but is more reliable and that is a long rod crank.The long rod crank has several advantages for two stroke application. A longer rod has less crank angle meaning it is actually walking back and forth by less degrees reducing stress and wear. A longer rod has less angle during the fire portion of the stroke.It offers slower piston speed at the top and bottom of the stroke. The slower piston speed at the bottom of the stroke is where the real advantage comes in, that lets the ports have more time to charge as compared with the same port timing on a short rod motor.

I suggest you seriously think about what you want to do and research it first before jumping into anything.

 

The amount of engine displacement you gain by lengthening the stroke is also depending on the size of the inside of the cylinder. Maybe you are refering to a stock blaster cylinder.

 

that is for a .020 over cylinder.which is the most common piston size on a used blaster.