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  1. R

    well i finally caved.........new 550xp!

    Hope yours runs better than mine. Its a cold hearted beaaatch to start. Have to feather the throttle to keep it running after blipping the throttle from fast idle. Bogs down, stalls, have to restart and let it warm up for a while before it will accelerate without hesitation. I read up on it...
  2. R

    RPM's......How much is too much after muffler mod????

    Exactly, 9000 rpm is where it makes its max hp, not the max rpm under no load. I am thinking the 450 is pretty close to where it should be at about 12,500 under no load. I have not modded the muffler and it is 4-stroking at WOT but not in the cut.
  3. R

    RPM's......How much is too much after muffler mod????

    I could fatten it up to 13K and see how it is in the cut. It is 4-stroking now, though.
  4. R

    RPM's......How much is too much after muffler mod????

    Never heard of a MS 290 with a limited coil??
  5. R

    RPM's......How much is too much after muffler mod????

    Thanks for the reply....anyone got any ideas on the Husky 450 max RPM?
  6. R

    RPM's......How much is too much after muffler mod????

    I picked up a Trail Tech tach/hour meter and hooked it up to my MM'd MS 290. After I got it warmed up I held it WOT for a few seconds to see how many RPM's it was running and the tach read 13,950. Stock max. rpm is 12,500. It have been running it like this for a while and it seems to be...
  7. R

    Diffrence in pistons US vs Brazil

    That's hairlarious!!:smile2:
  8. R

    550 XP Bar Fitment????

    That is the reason I didn't even realize I had a NK setup on my 450. Cause I started running all different chains and never had an issue.
  9. R

    550 XP Bar Fitment????

    The new NK bar he gave me is the same Husky part number as the old one and I told him it didn't work when used with standard chain. He ordered 20LPX chain and thinks it is going to work with that new NK bar? I don't think it will.........I think I have a loop of 20 LPX at home. I didn't even...
  10. R

    550 XP Bar Fitment????

    Well, after spending about 30 mins at the dealer trying to explain the interference issue when using a NK bar with standard chain I still believe he hasn't a clue about what I am telling him. He is in his catalogs looking for 550XP bar and chain fitment and the 550 XP is not even listed in his...
  11. R

    550 XP Bar Fitment????

    Thanks Spike! I just got to find the right .050 bar to put on that 550XP. I got too much $$$ tied up in chains to not to be able to use them on that saw.
  12. R

    550 XP Bar Fitment????

    The old bar I put on the 550 is definately narrow kerf. Looks like I have been running standard chains with NK bar on the 450 for a while but have not had any issues . I will be going to the dealer this afternoon to drop the .058" set up off provided he has a .050 B/C that is compatible for...
  13. R

    550 XP Bar Fitment????

    I will have to check the original chain that came off the 450. I wonder if it is narrow kerf?? I have been running standard .325, 050. gauge chains on the 450 with no issue. The 550Xp don't like that setup.
  14. R

    550 XP Bar Fitment????

    I thought that was what I did too but I pulled it apart and made sure the chain went on the rim properly. Soon as I tightened the bar nuts it locked up the chain and it prevented it from spinning freely. I put the original .058 set up on it and it spins freely? I think it has to do with the...
  15. R

    550 XP Bar Fitment????

    I just picked up a 550 XP yesterday and couldn't wait to get it home and run it despite the monsoon conditions we are having here. I specifically remember telling the dealer I wanted a .050" gauge 18" bar and he said that's what it came with so I didn't even look. I headed out of there with...
  16. R

    How often to turn bar?

    That is my practice as well. :msp_thumbup:
  17. R

    Anyone have the new Stihl MS-461?

    The 461's have the Intellicarb, which is different from Auto Tune (Husky) or M-Tronic (Stihl). The Intellicarb is a carb that compensates for a dirty air filter. The M-tronic or Autotune is actually an actively controlled carburetor using a PID controller. Makes adjustments to the carb...
  18. R

    Husqvarna 450 seized 16" bar?

    I have had this happen to me a couple of times, once with 18" Stihl rollomatic E bar, once on Husky 450 with 18" Oregon ProLite bar. Sprocket tip jammed full of chips and bar groove packed with chips to the point the chain would not move. Both had to be completely disassembled, bar groove...
  19. R

    Exploding Logs!

    From the pictures you posted on the 2nd page the stuff thats blown apart looks like Ironwood and the bottom pic sure looks like Ironwood from looking at the bark. Tough stuff if it is.
  20. R

    Stihl announces new line of green saws

    Had me right up until the "Jobu" brand. Nice!:msp_biggrin: The only thing better would be the headline........"Husqvarna introduces a new line of saws that keep all the bolts from falling out".
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