Jump to content

Adam Karvonen

Members
  • Content Count

    9
  • Joined

  • Last visited

About Adam Karvonen

  • Rank
    TT Newbie

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Adam Karvonen

    WR300 vs TE300, pre-ktm vs post-ktm buyout

    What makes them different? Is one more race oriented? How would you describe each bike? I know that none of the parts are interchangeable, I'm just not sure what differences I would notice if I jumped on a te300 or what different group it would be aimed at.
  2. Adam Karvonen

    WR300 vs TE300, pre-ktm vs post-ktm buyout

    What are the differences? I know there are the obvious differences of electric start, 6 speed transmission, hydraulic clutch and different suspension, but I'm not sure what differences I would notice riding them.
  3. I just picked up a 2012 Husqvarna wr300, and am wondering how it compares to the ktm 300s produced after they bought out Husqvarna. The snow hasn't quite melted off the trails yet, but it seems to perform pretty good riding around the house.
  4. Adam Karvonen

    Case protectors

    I just punched a hole in my 4th clutch cover and it's time I figure out a better solution. My bike is an 06 yz450f. I didn't see any great aftermarket solutions, although they may be out there, and I'm going to be tipping my bike over on rocky trails for the foreseeable future. I was thinking of taking a sheet of thin steel, bending it to fit the clutch and ignition cover, drilling holes for the bolts, and epoxying it on. I would like to wrap around the bottom to protect that as well. The main questions I had where: What thickness and material would work best? Would a hard epoxy like jb weld or a more flexible caulk be better? Do I even need an adhesive? Are there any concerns with blocking heat dissipation or adhesives that would be good? What would be the best way to do it without it looking like crap? Does anyone have a better idea?
  5. Adam Karvonen

    Repairing an external crack in a cylinder head

    I replaced the piston and cylinder and installed stainless valves while it was apart. It runs fine so far with no overheating and no signs of the crack. While taking the engine apart, I found very little coolant and a failed water pump seal, which is why the crack grew. The members on the engineering and technology section thought the scratch was no big deal. I went through the bottom end last year so hopefully I'm good for the next couple.
  6. I was getting ready to assemble my head off my 06 yz450f and noticed a small ding on the edge of the cam journal in the head. I hit it with some red scotch Brite and somehow put a 1/4 inch long scratch in it running perpendicular to the direction the cam rotates. I hit it with some 1500 grit to knock down any high spots, but I can still barely catch a nail on it. What worries me is that it runs all the way to the edge so I could potentially lose some of my oil film. Looking at some LS1 forums, it seems common for them and not a very big deal. Do you guys agree? In the picture, it is on the right side of the exhaust cam journal.
  7. Adam Karvonen

    Repairing an external crack in a cylinder head

    I pulled the head and sent it to Bill's heliarc in Spokane. He said he had done a couple similar cracks and all his welds have held up. I also talked with point view cycle, the head guy there said he's seen a few, mostly from tightening head bolts while hot to try seal a leaking head gasket. He said 3 of his 4 repairs had held up. Anyways, I was getting ready to assemble the head and noticed a small ding on the edge of the cam journal in the head. I hit it with some red scotch Brite and somehow put a 1/4 inch long scratch in it running perpendicular to the direction the cam rotates. I hit it with some 1500 grit to knock down any high spots, but I can still barely catch a nail on it. What worries me is that it runs all the way to the edge so I could potentially lose some of my oil film. Looking at some LS1 forums, it seems common for them and not a very big deal. Do you guys agree? In the picture, it is on the right side of the exhaust cam journal.
  8. Adam Karvonen

    Repairing an external crack in a cylinder head

    It is a 2006 yz450f. I will call around to some welders tomorrow. I was thinking it may work to drill and pin the crack because I put around 30 hours on it with the crack before it began to grow. Would a good welder be able to do it with the head on the bike or would it have to be removed?
  9. I noticed a small crack in my cylinder head underneath one of the head bolts a couple months ago. It wasn't an issue until last ride when it went from 3/8 inch to 3/4 inch. It does not leak at all. I would like to repair it if possible because I put in valves and had the seats cut pretty recently. My thought was to drill a 3/16 hole at the end of the crack and JB weld in a tight fitting aluminum pin, and then grind a v down the crack and clean it extremely well, then JB weld the crack. I have heard that welding these heads is pretty dicey, is this something a decent welder could do? Would the head have to come off of the bike? Another complication is that to drill through the crack, I would have to remove the head bolt. I am going to try leaving the head on the bike and using the same head gasket. If it leaks, I will replace it. Would it be better to remove just the one bolt or all four?
×