Recent content by JohnstonOctober

  1. J

    2003 Blaster Transmission Problem.

    I recently rebuilt my blaster and I am noticing it doesn't want to shift, if I shift without the clutch it shifts fine but for example if I pull in the clutch and start gearing down it will only go down 1 gear if I don't ease of the clutch a little it won't go down anymore at all even though I...
  2. J

    Boring my cylinder. 2003 Yamaha Blaster.

    Just a rubber mallet work twice before did it the same exact way, it's all together crankshaft moves fine ordered my piston today should be here next week.
  3. J

    Boring my cylinder. 2003 Yamaha Blaster.

    Well I tapped it in little by little like I did on my yz and kx, the inner part is less than a 16th of an inch from each side of the case. It doesn't lock down when I tighting the bolts but it gets tension on it. It's not as easy to turn I don't wanna throw the rod.
  4. J

    Boring my cylinder. 2003 Yamaha Blaster.

    Okay I will check it when it's here. I am having trouble getting the split case back together. Everything was where it was supposed to be but when I get all the bolts in and snug if I tighten them the crank locks down and won't turn, my kx 250 and my yz 125 was just tap together easy, this one...
  5. J

    Boring my cylinder. 2003 Yamaha Blaster.

    How critical is chamfering the port, I did the best I could with a air grinding tool then took fine grit sand paper to it. My finger dorsnt catch and it doesn't feel sharp, I honed it after that.
  6. J

    Boring my cylinder. 2003 Yamaha Blaster.

    Okay thanks for the help. It's kinda rough just didn't know wanted to be sure, he helped me bore it and he said cast shouldn't be smooth. I have to get new honing stones for my honing tool then ill be done, looking at the manual we brought the cylinder bore to 66.504mm (2.6183 Inches) the piston...
  7. J

    Boring my cylinder. 2003 Yamaha Blaster.

    Had it bored today with what I got out of the manual, how smooth should the finish be. My yz was sent off to be plated, and it was slick as a babies a**. This one not so much. Mÿ dad who used to rebuild engines says its fine.
  8. J

    Boring my cylinder. 2003 Yamaha Blaster.

    I would think its cast, the one I put in my kx 250 looked cast.
  9. J

    Boring my cylinder. 2003 Yamaha Blaster.

    It's a namura piston not sure what that one is.
  10. J

    Boring my cylinder. 2003 Yamaha Blaster.

    I have done posted on here, an diagnosed it, either got to hot and the ring caught the port or there was not any oil, the bearings and everything were gone. I have already ripped it apart rebuilt the bottom end, removed the oil pump with a block plate all I have left is to bore it, I need the...
  11. J

    Boring my cylinder. 2003 Yamaha Blaster.

    Okay, so the other day my blaster seized, not sure what happened. I am rebuilding it, I work at a machine shop an we have everything we need to bore the cylinder our selves. I need someone to tell me the clearances, if I am right the piston is undersized, we are trying to clean it up and I need...
  12. J

    Removing oil pump help?

    Okay, I got the seal off, so now I just need to know a good ways to plug the hole where it was injected into the carb.
  13. J

    Removing oil pump help?

    My blaster locked up for no reason 3 days after I got it that why I removed it I dot like oil pumps I would rather premix that's why I removed it. I got the pin out but now the seal is stuck on there how can I get it off. I still need to plug the carb somehow
  14. J

    Removing oil pump help?

    I am trying to remove it but I can't get the bushing out of the case so I can put my block plate on, what's the best way to get it out? Also what's the best way to plug the carb where the oil was injected?
  15. J

    looking for new plastic.

    Okay, They look good thats probably what I will do, plus its cheaper than buying the OEM flaps. Ill post back if I come up with anything else I need help finding. I am gonna make a post in the Full Rebuild section tomorrow after I can get some pictures, I would love opinions.