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Korbenw7p3c

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About Korbenw7p3c

  • Rank
    TT Bronze Member

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  • Gender
    Male
  • Location
    Illinois
  • Interests
    dirtbikes, the little ones, what else!
  1. Korbenw7p3c

    Lets see The Rm's

    It happened again. RM 85 Super.
  2. Korbenw7p3c

    Measuring 2t bore

    That is correct. But, some companies do offer the (+) sizes. When I was getting back into 2-strokes (recently) I posted a question about what piston brands to buy and which ones to stay away from. Most any company offering pistons for our bikes, I was told that all were good except for Namura. Don’t buy one even if they are consistently cheaper to purchase than everyone else. So far, I’m liking the Wiseco in my newest and recently purchased bike. My original RM 85 I bought in January now has a Pro-X piston. I’ll be staying with those two I’m pretty sure.
  3. Korbenw7p3c

    Measuring 2t bore

    That is correct. But, some companies do offer the (+) sizes. When I was getting back into 2-strokes (recently) I posted a question about what piston brands to buy and which ones to stay away from. Most any company offering pistons for our bikes, I was told that all were good except for Namura. Don’t buy one even if they are consistently cheaper to purchase than everyone else. So far, I’m liking the Wiseco in my newest and recently purchased bike. My original RM 85 I bought in January now has a Pro-X piston. I’ll be staying with those two I’m pretty sure.
  4. Korbenw7p3c

    Measuring 2t bore

    I believe you’re thinking about how some manufacturers offer pistons in “A,B and C” sizes to accommodate for the bore opening up oh so slightly from use. A “B” piston (could) be the right size for your bike. I remember you describing how the bike was kinda beat when you bought it. I definitely would get it measured correctly and then order the correct size according to that measurement. I just recently read about one of Wiseco’s pistons with a coating and they only come on “one size”. They claim that the coating wears where it needs to wear and when broken in all the way it’s the correct size.
  5. Korbenw7p3c

    Hows my bore from what you can see in the pic?

    Sounds exactly like mine. I don’t hear anything that sounds concerning. Normal difference in sound I think.
  6. Korbenw7p3c

    Hows my bore from what you can see in the pic?

    The pitch of the sound will indeed change with throttle position when testing the compression. Forgot to mention that 125 is too low and I’m sure there is some significant wear on your piston ring. I know you want to ride while you can before the weather gets nasty out, but you’re running a big chance of some expensive engine damage if you continue to ride it.
  7. Korbenw7p3c

    Hows my bore from what you can see in the pic?

    You’re doing good and learning quick, asking the right questions. I have the same bike and just did a semi-recent top end rebuild. Six kicks w/the throttle wide open and I was at 165psi. Just checked it again and it’s at 165 still. I’m just riding around in fields and some woods. WFO in a gear or two then slowing down watching out for trees and terrain changes.
  8. Korbenw7p3c

    Hows my bore from what you can see in the pic?

    Here you go. Follow this pattern when cleaning up the cylinder with scotch brite pad.
  9. Korbenw7p3c

    Hows my bore from what you can see in the pic?

    Google 2-stroke cylinder bore cross hatch- (Images). I’m at a loss not being able to describe it other than the process of leaving cross hatch scratches on the cylinder bore to enable the new piston ring and cylinder to wear into one another. Which is part of a break in process.
  10. Korbenw7p3c

    Hows my bore from what you can see in the pic?

    For my bikes, I don’t/won’t use a hone. If you do it by hand with a scotch bright as suggested, you don’t run the risk of “oh shit, I went too far with the hone and now the plating is worse/damaged”. Study up on images from the “net” to see what the cylinder wall is supposed to look like after a fresh re-plate job. Cross hatches are your friend.
  11. Korbenw7p3c

    need help ( tranny problem)?

    Man, I hope this turns out well for you. I helicoiled my Sportster oil drain hole back in the day and it fixed it permanently. I’m a freak about changing oil and I had that Harley plug out many times. Your situation is like a modern day horror story. The guy that had a pretty new CR of yesteryear and it got ruined is/was a horror story. Jeez...
  12. Korbenw7p3c

    2 stroke running a little rough?

    Pull the expansion chamber off and look at the piston through the exhaust port. Pull the spark plug prior- to enable you to gently move the piston in the cylinder to get a good look at the piston.
  13. Korbenw7p3c

    1993 rm125 clutch problems

    Clutch spindle w/splines, so you need to screw in the adjustment screw at the handlebar lever all the way back in. Remove the clutch spindle arm and reposition it so that the slack in the cable is all but gone. Then adjust the fine tuning at the handlebar lever.
  14. Korbenw7p3c

    2004 300exc spooge

    ...and I thought my self-oiling rear disc was bad! My problem is the high flash point oil I use.
  15. Korbenw7p3c

    Yz125 compression

    How many consecutive kicks gets you to 60psi or 135psi? I kick six times when checking my bike.
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