spasm

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About spasm

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    TT Newbie

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    Australia
  1. Couldnt be bother with all the stuffing around, went and bought materials and made one. $40 header. and imho will work real well.
  2. Yep, thats mate. I just found that info, however - as this is designed to work with the GYT-R can, i was thinking perhaps the can has the bigger mid pipe ID?
  3. Is this certain?
  4. Yep, i know it says only GYT-R pipe, however it has the step in the pipe just like the 07 factory header does. The bend looks right - its just a question if the mid pipe diameter is the same as stock pipe?
  5. Ive got a 07 yz450 - which ive now smashed 2 x TI header pipes on. Yep, i ride aggressive thru the woods. My question... will a GYT-5TA93-50-00 - 2003-2005 Stainless header pipe fit onto the 07, and slide into the rear can? It looks as if it will, but i cant be sure andi cant get a pipe to try.
  6. ive done 1400km so far on new rings
  7. My Wr250F, with Yz Cam, Hi comp piston, Fully tuned on the dyno wheels of 33HP - at 29deg C tho, and 85% Humidity. I was told a Spanker KX250F with pipe wont make these numbers! (in Oz anyhow)
  8. My best mate rides a DRZ400E, in Australia so it has the 39mm kehien carb, desrticted, jetted, and runs an aftermarket White bros exhaust. I ride a Wr250F, Yz Cammed, Stainless Valves, Grey mod, Airbox, Yz400pipe im 86kg, he's 100kg. Side by side in a drag race i munch him till about 130km/h and then he slowly wheels me in at about 140km where i run outta rpm, he get to about 143kmh before he's over. thru the bush, my wr250 easily out accelerates then DR-Z from corners etc. And he's a more experienced rider then myself. The beauty of the 400, is being able to chug up hills... unlike a wr250
  9. i have nothing but hanging idle issues with the ACV enabled. disable and its perfect, and the bike has been correctly jetted on a dyno
  10. Matty, How did u go about disable ACV, im in the middle of it now, and it defiently makes a good difference. I just dont know to block the vacuum source so its always using the extra circuit, or if i should flip the valve over and leave the circuit closed and just wind the fuel screw out a little to compensate? My concern is, will it change the rest of the jetting - as its currently spot on with the ACV - except varying idle
  11. or just slide a 03 exhaust cam in :S
  12. yer 170 is stock, its been run up on a dyno tho, and mixtures are fine... it pulls hard as fast right to the limiter
  13. valves are perfectly in spec, as they'd wanna be, only 1 month old, fresh seats cut and new valves. i just ran the bike then at idle for 5 mins, and pulled the brand new plug put in prior to starting, it didnt even have a mark on it! no soot, nothing! I take it, if anything its still slighltly lean... i dropped the clip on the needle to richen up the mid area - but now its spluttery in that area... only had a tiny splutter before.. so im guess i need to go a titch leaner on the needle too....
  14. Ive got a Wr250, Yz auto Decomp cam, high comp piston, stainless valves, ported head etc. Jetting Main 150 Needle Stock on 4th clip Pilot 45 (2 1/4 turns out) stock PAJ Leak 40 Ive finally sorted the Fuel screw to get the bike to stop hanging at idle - but only just - occasionally hangs Now my new problem, to get it to fall back to idle the idle has to be set pretty low.. i reckon 1200-1300rpm'ish.. if i try and give it a little more idle rpm (which i need for how i ride), slightest touch on idle screw and the rpm's jump a mile and begin to hang again. Could it be that my pilot is too small, and my idle screw wound in so far that it is causing a big lean condition with a slight bit more opening?? Should i be looking at a smaller Pilot and closing the idle up slightly???
  15. cheers guys, i seem to have cured the hanging idle with 2 1/4 turns out, just hope it fixes the surges when at low throttle openin