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PJz400

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About PJz400

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    TT Member

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  • Location
    Massachusetts
  1. The glowing pipe is okay. Letting your bike sit at 5K RPM for over 2 minutes with no air flowing through the radiator is not okay. You can bake and warp every internal bearing and piece by doing what this guy thought was cool.
  2. PJz400

    2011/12 Clutch

    If you're putting anything less than a quart of oil, like the factory manual suggests, than that might be the problem. In 09' the manual suggested putting something like 690ml. In 10' they changed it to something like 800. I put in a quart every time.
  3. PJz400

    2007 kx250f Cracked Cases

    Pull the motor out from the sprocket side with the bottom end coming out first. You could find a bottom end of eBay for $600, an entire motor for $1500. Seems silly to drop $2,400 into a bike that is 4 years old.
  4. Hey everyone, I'm inspecting and rebuilding the top end on my 2009 250f. When I got to look at the valves I noticed white corrosion has built up on the exhaust valves only. It appears to be pretty tough and doesn't easily come off. Is this normal? They are pro circuit valves that have 40 hours. Thanks for the help.
  5. PJz400

    weird noise in engine.

    2009 PRO-X 13.5:1 kx250f piston kit, I believe it fits, not positive though. I'd sell for $60 shipped.
  6. PJz400

    Seat Cover Staples

    Didn't intend belittle you Goon, just that I noted in my first post that I have no desire bringing it to an upholstery shop. Here's a video that shows how simple it is, for anyone considering what to do with their seat cover.
  7. PJz400

    Seat Cover Staples

    a pneumatic air stapler is $20 at Harbor freight, a heat gun is $12. If you get headaches from putting a seat cover on, then I guess you probably should bring it to someone for $30. The heat gun trick worked great, I spent less than 10 minutes with the heat gun and electric staple and the results are perfect. Thanks for the tip.
  8. PJz400

    weird noise in engine.

    I have a spare cylinder that is in perfect condition, also have a cheap cast piston
  9. PJz400

    asi radiator hoses

    Yea, www.motohose.com. Not as cheap as I thought, but the owner posts on some other message boards and I vaguely remember a discount code. Search google maybe.
  10. PJz400

    asi radiator hoses

    They have been fine in my buddies 450 for 40+ hours. However, the color's don't look that great compared to the more expensive CV4. After a while, the colors of the ASI started to fade and it looked even worse than before. Look for moto-hose if you want colors. Otherwise, I would get black from ASI.
  11. PJz400

    Seat Cover Staples

    A few years ago I changed the seat cover on my CRF with an electric staple gun with no problems. Today, I went to change the seat cover on 09' KX250F with the same gun and the staples didn't penetrate the plastic seat pan. Is the plastic on the KXF harder? Am I using the wrong staples? Am I using the wrong gun? I know I could have a shop do it, but its an all blue seat cover and I'm not sure how long I will like it. So I would rather have the right tools to do it myself. Thanks for everyone's help.
  12. PJz400

    Cast pistons in thumpers

    As far as this comment? U4.4 is also a leaded, oxygenated fuel that is an awesome fuel. C16 is a drag fuel that is commonly used in engines that are supercharged, use nitrous oxide, and compression ratios exceeding 16:1. Anyone using a fuel with an octane rating of 117 in a MX application is doing more harm than good. One of my closest friends is a large distributor for VP in the northeast. Your rep is very wrong. C12 is a great fuel, not the best, but a proven cheaper race gas that I've been using for 8+ years with great results.
  13. PJz400

    Cast pistons in thumpers

    Unless there was manufacturing flaw, I can't see any piston breaking with proper valve clearance and regular maintenance. The piston will only be used for one season anyways. I think I will use it since it only cost $60.
  14. PJz400

    Cast pistons in thumpers

    I want to hear some founded opinions about cast pistons in 4-stroke MX applications. I have heard they aren't as reliable as a forged piston but no one has given me any proof or theories as to why. I also heard most OEM pistons are cast, is this true? I have a 13.5:1 pro-x cast piston, fresh cylinder, and gasket kit ready to be installed in my 09' KX250F with a Pro Circuit top end (Ti Valves, cams, JE 13.5:1 forged piston). I use 50/50 mix of VP c12 and have a PC exhaust with proper jetting. Should I have any worries about putting in the cast piston? I am considering just putting new rings on the current forged piston but if it looks worn I will have to replace it. Just want to know that the cast piston will not jeopardize the integrity of my motor. Thanks
  15. You need to rent to a dozer for a day or weekend to build the layout and push the dirt around. No other machine will do it as effectively. To maintain and build features, I would consider a bucket loader tractor. I use a Kubota b3030, which is smaller than most bucket loaders but it works well for my track, which is tight and rough. Some people would suggest a skidsteer or maybe a bigger bucket loader but I like my smaller tractor for how easy and comfortable it is to use.
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