Search results

  1. R

    swap blaster motor for what motor?

    I can tell you that a yz250 is nowhere near 43 hp, but I did own a 97 yz250 with a PC pipe, KN filter, and a 38 PWK airstryker carb and I could eat up my buddies on there mildly modified banshee's a 450r all day long. That was on two wheels, but I'm guessing the blaster doesn't weigh a whole...
  2. R

    swap blaster motor for what motor?

    The 490 swap is fairly common because of the power and the fact that it is still air cooled. They are fairly easy to find, but not as easy to find parts for. Most of the other swaps you mentioned would need to have a radiator installed, but would really be the way to go in my opinion. Maybe a...
  3. R

    Jetting 35mm PWK airstriker - HELP guys!!!

    One thing you may want to check if you haven't already is your carb cable adjustment. When you put the new carb on did you make sure that your slide is completely closed. If it's adjusted to where it's partially open you'll have hell trying to get it started and would also explain your wet...
  4. R

    Please help, can't start after rebuild!!!

    Guess I may have misled you. On my son's blaster I had to splice the wires. Never knew there was a difference between the years for how they needed to be removed. It sounds to me like all conditions should be okay for the motor to at least fire. Maybe not run perfect, but at least something...
  5. R

    Jetting 35mm PWK airstriker - HELP guys!!!

    With that jetting it should at least start. I'm pretty confident once you splice those tors wires that were left open, you'll at least be able to get it running. Then you can fine tune it.
  6. R

    Please help, can't start after rebuild!!!

    Your tors is probably the issue with the non starting. You can't just unplug them and go. Unplugging the system will cause it to be active at all times. The plug going to the carb, you just unplug and that's it. The one up front you can do two ways. You can either cut the plug off and...
  7. R

    Is it neccesary to "break in" new piston rings?

    I don't know if I'd do that. If u have new rings u might as well use them, but after the porting and new rings, I think I would take the precaution of honing the cylinder as well. Pretty much any automotive shop should be able to do it and most only charge 5-10 bucks as it only takes a couple...
  8. R

    Is it neccesary to "break in" new piston rings?

    I agree, treat it like it's a new rebuild. The rings is the reason for doing a break in afterall. Did you have them hone the cylinder while it was apart? That's always a good idea as well when replacing rings.
  9. R

    Does this needs to be ported/ grinded????

    I wouldn't try to remove too much material. If u over do it, you can really screw it up and it can't be returned to the way it was. I'd focus on cleaning flaws and smoothing/blending everything, sharpen the transfer ports and the bridge on the intake and raise the roof on the exhaust. The...
  10. R

    240 big bore jetting

    If it's pinging, then yes, it does sound like it's running lean. Better to be safe than sorry. I'd go big and work your way back if you have the jets to do so.
  11. R

    Please help: headmill "inch to milimeter convert

    Go to worldwidemetric.com they have a very useful online calculator for future reference. Just click on the calculator tab at the top of the screen.
  12. R

    240 big bore jetting

    Try dropping the clip to raise your needle one notch and see it that doesn't give you any better results.
  13. R

    Does this needs to be ported/ grinded????

    You should be able to raise the roof on the exhaust port about 1mm and get good results. Then polish the crap out of it. Only polish the exhaust port, not the intake or transfers. Just smooth those out with the dremel, but for the exhaust, the smoother the better. Smooth it out with the...
  14. R

    Please help, can't start after rebuild!!!

    The 35 airstryker won't have any tors to worry about, but if you didn't splice the wire from your old tors assembly up at the throttle you may have a problem.
  15. R

    240 big bore jetting

    I'm in Arizona at about 2500 feet, but altitude is not the only factor. Weather conditions and air density play a big part. I'm guessing it's still pretty cold over there so your probably going to run larger jets than I would although I'm running mine very rich at a 160.
  16. R

    Does this needs to be ported/ grinded????

    You can do it with a dremel, but I found that an air die is much quicker and you can vary the speed up and down easily on the fly. Whichever way you go, you'll need to get a couple different tips. Get an aggressive burr for removing the material and a less aggressive for smoothing it out...
  17. R

    Does this needs to be ported/ grinded????

    I barely opened up the intake ports during the smoothing out of the casting flaws basically whatever material needed to be removed to even everything out and match it all up between casting and sleeve, but I did also angle the bridges in the intake ports. This banshee already had the exhaust...
  18. R

    240 big bore jetting

    I'm running a 52 pilot and 160 main and that's running very rich for safety. I'd say a 45-50 pilot and 150 main is more in the ballpark of fine tuning.
  19. R

    Please help, can't start after rebuild!!!

    You need to open up that carb and see what size jets are in there. If you have good compression and your getting spark and the plug is wet it should fire unless it's just massively overfueled (wet plug). That's a pretty big carb to begin with for a small bore motor, so your jetting is going to...
  20. R

    Does this needs to be ported/ grinded????

    I did a cleanup port on my wife's banshee which was similar to this. I smoothed everything out and sharpened the edges on the transfers and cleaned up the casting flaws on the intake ports. It made a very noticeable difference in power. Much better responce as well. I'd have to say go for...