This is the 4th yfz we have built(all with no problems), this one just is a turd. Stupid things seem to happen to it. Last month the gear that turns the oil pump broke and it was holding all of the oil in the motor. I noticed that it spit some oil out of the overflow like it was overfull, took the oil line off and it wasent pumping any oil. We figured the pump just went out, but on the way in we seen that the gear had broke and 1/4 of it was gone lol. After fixing it , we flushed the motor and changed the oil a few times. Good as new. NOW, it starts this crap. Oh well, I have a back up bike.
05 yfz SE 3mm stroker,480 Athena BB, fmf exhaust,hotcams, lots of other things
06 yfz XC bike, 3mm stroker,cam mod, hmf exhaust
06 Brute Lifted and Snorkled