Maintenance & Technical > Kx Frankensteins
YZX500 Project
reklessj:
Looking good!!! Crisp jetting will make a world of difference. My son used to think mine was a bore, now that I got it dialed in he is scared of it. Says it stupid why would you need that much power. I say don't be little girl
scottysg:
Took a trip to divide peak behind Santa Barbara. Awesome views. But the bike ran like hell. Moved the needle to the third position. Tried 58/168 then 55/165 jets with as many air screw adjustments as I could. If I didn't know any better I'd say it feels pig rich. Just falls on it's face blubbery after a pretty lame low end. But at wot there's hardly any smoke, so it can't be. I'm scared to go more lean that that :/ the bike idles great! Minutes more than any 2 stroke I've had. Seems crisp off idle if revving it in nuetral. Timing is good as per dots on stator. Spark looks good jumping to the block, plug is gapped to 24 thou. I'll try the "kips bolt mod" as I've seen it called, tomorrow. I hope that's the problem. If not then I'll pull the kips plastic cover and see if the arm is moving. If they're moving and I've checked for over rotation, I guess the drums could be a tooth off, so I'll have to pull the head at that point. Out of ideas after that.
Also, I noticed a lot of tranny fluid coming out of the plastic nipple on the inside of the case behind the kick starter. My skid plate was soaked and it was obviously coming out of this spot. Gonna hook up a hose to this and zip tie the other end somewhere higher on the bike so it can drain back down. Is tht normal for it to expel so much fluid from there?
1.1 hours on the clock and running poorly I'm scared I'm gonna break this motor before it's running right. Oh well gotta run it to tune it :/
scottysg:
I have taken my main jet from 160-178 at every step and see no change in my wot performance. its unbelievable. My float valve is adjusted to spec. The carb has been thoroughly cleaned. Every port\channel is clear. I checked the power valve system it appears to be in spec. It just doesn't wanna rev or give me any power. Im on the beach and its 70 degrees. A friend suggested I check the reeds. How do these pictures look
(flashlight behind pointed right at the reed tips) Theres barely any if any light coming through the reed tips. however there is light coming around the edges as you can see. These are v force reeds, the old ones with screws holding the reeds on the block. Should I replace them or do I need to look elsewhere as to why my bike runs like a$$. Ive never had a reed issue on any of my bikes ever so I'm doubtful this matters. A 500 piston coming down should create enough pressure to close these little valves, but thats opinion only not experience.
Thanks for your help.
Motorrad:
Didn't read the entire thread..... But if your using a used carb... I have tried to tune several of the socal guys stuff... But couldn't due to football shaped NEEDLE jet.... (Ahem... Shlepy)....
Edit.. Are you located on Santa Barbara? If so you may be in the "socal crew". That gets super squirrel help and info....
Foxx4Beaver:
--- Quote from: scottysg on February 24, 2016, 03:21:53 PM ---Should I replace them or do I need to look elsewhere as to why my bike runs like a$$. Ive never had a reed issue on any of my bikes ever so I'm doubtful this matters. A 500 piston coming down should create enough pressure to close these little valves, but thats opinion only not experience.
Thanks for your help.
--- End quote ---
sorry if you've said you already done so...I didn't read the entire thread, but...
have you verified the KIPS are indeed working?
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