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    • Bryan Bosch

      JUST IN!   04/24/2018

      HOW TO: 4-STROKE PISTON REPLACEMENT DONE RIGHT!

RIDER44

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About RIDER44

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  • Location
    Australia
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    motorcycling
  1. Read through that thread, gets overwhelming! My thoughts are that the bike should run fine, hopefully no power loss?
  2. Yeah spot one, inc. Head and powervalve assembly. It will definitely have a new piston. Are 250 and 250x pistons identical? Also why cdi swap?
  3. Thanks for your input. My cylinder is done, and this setup is cheaper then all new oem parts, with onky 40 hours. Plus there maybe better power characteristics due to porting. Hence my thread.
  4. Anyone tried it? I can get a complete top end with 40 hour's for cheap from a 16 250x. I only race enduro, so could be good. Cheers in advance
  5. yes i have also seen outside van, there stuff looks great, but i agree that most guys (myself included if my time isnt counted) roll with vans worth less then the bikes inside them. Im going to go to a caravan/campervan builder soon to sound out his thoughts thanks guys
  6. yer nice, im constantly seeing the mobile coffee vans, that is the sort of thing that would hopefully keep the business busy in between toy haulers. i looked into the regulations, wouldn't be much of an issue thanks for the input
  7. couldnt agree less, i have an 07 250, set up for enduro/woods, and also ride the occasional mx, i dont remove the 11oz weight. Its gives traction and does not significantly effect top end only the 'rev' characteristic. 90% of the time you need drive out of a corner to clear jumps, not straight line flat out speed.
  8. yes this what I was referring to at the end, that most seem to make do with what they can manage themselves, and dirt bikers certainly tend to be do it yourself types. as far as everyone having different needs, that would be part of the service, identifying their needs and tailoring to suit. the other part to this would be offering parts/templates that i have made to take the hassle out of other peoples builds (panel/lining templates etc) thanks for the feedback guys
  9. hey guys, i also posted this in the toy hauler section, but id like to get a good feel of your ideas. Ive had the idea for a long time now, to start a business building/outfitting vans for mx (we would also do campervans, work vans etc to keep the work flow) but would anyone pay for this service? i know there are guys out there doing it in america (im in australia, out bike scene is smaller) i personally enjoy the process of doing vans and have had a few myself and friends vans have been done along the way. But i think for the majority, other then putting in the bare essentials its beyond there capabilities or interest to do it? anyway, just looking for some feedback on the idea, or what you would look for in an outfitter? cheers guys!
  10. hey guys, Ive had the idea for a long time now, to start a business building/outfitting vans for mx (we would also do campervans, work vans etc to keep the work flow) but would anyone pay for this service? i know there are guys out there doing it in america (im in australia, out bike scene is smaller) i personally enjoy the process of doing vans and have had a few myself and friends vans have been done along the way. But i think for the majority, other then putting in the bare essentials its beyond there capabilities or interest to do it? anyway, just looking for some feedback on the idea, or what you would look for in an outfitter? cheers guys!
  11. interesting idea, i dont know for sure, but i dont think theres enough room in there for the additional parts.
  12. Hey Guys, Bike in question is an 07, but this switch runs on all 250s 05+ The 'switch' i am refering to is the black plastic cap that is just in front of the gear selector, and has a wire running back up to a plug under the tank. So my switch has been broken in the process of a bottom end rebuild, from the searching i've done, i've found products that remove the switch completely and replace it with an alloy cap. So if it can be removed and simply capped off, what does it do?? Ive read ideas that it simply limits the revs in neutral to avoid damage when there is no load on the engine? Ive also read it retards the ignition (some stated by 6 degrees!!) these two could be related? so is anyone running a cap or no switch/sensor? will the bike be limited in all gears without or will it just remove the limiter in neutral? will the timing be different in all gears or simply the same as all gears when in neutral? I also read that there could be a possibility of using this information to create a cheap dual igintion switch (ie one normal one retarded) anyone more clever then me figure that one out?? cheers guys
  13. so i couldnt help myself, pulled it down last night. Bottom end is done (big end) do these just let go like that? it was honestly fine before? now it is well and truly gone.
  14. So feel free to shed any light on my problem. I recently pulled my 07 yz250 enduro bike down to a bare frame, to freshen it right up (looks mint, pictures may follow) and whilst it was apart i pulled the cylinder off to replace a dud base gasket (was getting water on the plug). Clutch hub and plates were also removed, although i cant see that being a factor. Right so it was time for its first start up today, and she got going second kick, and ran fast due to tension of the throttle cable, fixed that and it was idling ok. So was giving it a rev, and when i backed it off it went to almost die, so i gave it a blip to keep it running and it died, and to my suprise it appeared to be siezed. So i got it home and after a bit i checked the kicker and it moved slightly, pulled the top off and sprayed some penetrating oil around the piston and it slowly moved then seemed to free up, turned it over several times with the top off, and all seemed ok, now out off interest i put the head and plug back in and turned it over again, but it seems slightly stiffer then usual and there is a 'knock' or noise at a certain point in the cycle. I then removed the plug and the noise seems to disapear, still a tad stiff. So it would appear that what ever that noise it is related to the additional pressure of compresion?? I check the rod for play when doing the gasket, all seemed fine. Only other factor to mention would be i feel as though there maybe a slight bur at the side powervalve ports (bottom edge) that may or may not have been there prior, it is a minor, minor blemish. So whats the problem? could the "siezure" have caused a bearing to let go? creating this new noise whyd it "sieze", clip the port perhaps? am i just paranoid? honeslty a bit puzzled right now
  15. if the handguards (mx or open style) are fitted well they don't make tight stuff any harder. I ride predominately trails as tight as the one in the video, though more technical, and don't have a bike without hand guards. you don't loose anything and gain some extra comfort. wrap arounds on the other hand, are great if your going slow, but there is definatly a risk of wrist injuries if you go over the bars