md30

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Everything posted by md30

  1. 2002 CR250. Original clutch, with 67 hours on the bike total. Yesterday I was going up a nasty hill and the engine got up to 250F (Edit: I incorrectly wrote 250C in my original post).. the clutch started slipping like crazy and there was this nasty strong burning clutch smell. Today I went to change the tranny oil and only 400ml of 650 came out, along with a ton of glitter. So i filled it back up with oil to flush it out, and more aluminum flakes came out. I did it again and still more flakes, some large, so i removed the clutch cover to find that one of the plates was shredded! i then removed the whole side cover and there were alummnium bits everywhere. about 60% of that plate was just reduced to flakes. but the sprockets all still look good. the clutch basket has a couple notches in it but they appear minor so I'll just file those. As far as cleanup, what do you all recommend?? this is all that's left of the plate:
  2. Here is the latest video: engine still hasn't gone in the bike yet. I keep it at my parents house so i only get to work on it when i visit every couple of weeks or so.
  3. Thanks Robert! It makes me very happy to know there are still people riding in their 70s!! I'm turning 32 soon and thought I'd be lucky just to get another 20 years of riding I totally agree riding alone is foolish, especially deep in the woods. That day there were some special circumstances... long story, but i was on more of a mission than a joy ride, anyways lesson learned!
  4. These two are actually on the same trail, but going different directions.
  5. what seat cover is that?
  6. how many hours will you be running that piston? i wish there was research to show that drilling a cast piston is safe. most people on the forums say it's more prone to failure, but everything is anecdotal so it's hard to gauge the credibility of all the different claims around the subject. when i had my '01 (no bridge) i used forged. now i specifically got a cast because i thought a cast piston would be better than a forged piston with a bridge cooling hole. but who really knows...
  7. on your 86? I didn't realize those had exhaust bridges, i thought they only started making those in 02.
  8. no it's a cast piston (pro x).
  9. engine is complete! 90 percent of the job must have been cleaning out the aluminum fragments and washing parts. plus removing a seized dowel from the cylinder. i tried to twist it out with some channel lock pliers but ended up ripping it in half. i managed to remove it with a drill and punch without damaging the hole somehow. man what a job. here is my cylinder after 67 hours. i guess that wearing above the exhaust bridge is normal?
  10. bottom end complete!
  11. yes it's grease, it keeps the gasket from shifting, plus its also an experiment to see if it will prevent the gasket from getting backed onto the engine case so that next time i split it open i wont have to scrape any of it off.
  12. Update: Still working on this. Here is part II of the rebuild!
  13. my friend took my down this slow and ROCKY trail (and broke his husky along the way)
  14. I'm rebuilding the bottom end on my 2002 cr250 after my clutch plate exploded and sent aluminum shards everywhere. I used a power washer to try to clean the shards out of the crevices in the outer clutch basket, and afterwards i noticed there was play between the gear and the basket as you can see here: Is this how they are? oem basket, with only 67 hours on it.
  15. that's mostly where i ride!
  16. Thanks. I wish i had a new clutch basket to compare it to. I'm wondering how it started to wear out after so few hours (hasn't even had a new top end) i wonder if it had to do something with the clutch shattering, or if that's normal after 67 hours. the basket isn't really notched, i know it kind of looks like it is in the video still above, but thats mostly discoloration.
  17. that doesn't explain why even aftermarket flanges from pro circuit sell different flanges for the 02 and 03. i measured the inside diameter of my stock 02 and 03 pipes today. identical. (about 47.6mm). also measured the distance from the tip of the pipe to the inner lip, also identical at 17mm exactly. so david, your spooge issue was not due to a different diameter pipe.
  18. Looking for a rear black S fender. Looked in TT store, RMATVMC, ProCycle, Ebay... and all I can find are E fenders, or a full plastic kit which I dont need. Please help! (while Im at it, would love a plastic front disc guard too!) PPS: Can anyone confirm that XR airbox fasteners work on the DRZ air box??
  19. https://sfbay.craigslist.org/sby/mcy/d/2007-cr250r-in-showroom-cond/6605889503.html
  20. Interesting, I'm going to measure the difference between an '02 and '03 pipe inlet with a caliper this weekend and report back
  21. they are not the same, each year has a different part number. and the '02 exhaust flange has a different part number than the '03 & '04 flange. and you'll notice that aftermarket pipe makers sell an '02 pipe, and a different pipe for the '03 & '04. what the differences are i dont know, but they don't appear to be so significant that they would affect interchangeability in an obvious way
  22. I got a like-new '03 pipe for my '02 and it fit just fine: However I only mounted it once, started it up, and put the dented one back on because I felt like it was too nice and didn't want to scratch it, so I can't say for certain that there wouldn't be any issue once it's actually in use.
  23. What seat cover is that? I bought a yellow/black seat cover but the color was more golden yellow than it was drz yellow, and just didn't look right. yours looks right.
  24. Thanks i realize i can get an oem fender for $80, but that's like 4x the price of a typical aftermarket fender. my current yellow fender is an acerbis E fender which i bought by mistake and had to use a dremel to remove portions of the plastic to get it to fit. looks like i might do the same with a black fender, I just can't understand why it is so hard to find a fender for a bike that's been in production for 19 years!