crfnaround said:was that 20secs with or without the juice :lol: j/k. thats real hot real quick. did it sound ok when it was runnin? make sure exhaust valve is adusted correctly and cam timing is set properly. exhaust gasket good/there? if it leaks it can draw in O2 and burn excess fuel in pipe right there instead of blowin it out the end. if everything went together right the first time you should be cool. if cam timing was ever off, make sure you didnt ding the ex valve. if you did, compression would be down. maybe check it by taking pipe off and putting your thumb or finger over ex port, jack kickstarter till it gets hard 8O then just keep steady pressure on it. you shouldnt feel any pressure on your finger till kickstarter breaks over when ex valve opens. if all thats ok go to jetting but it would have to be hellaciously lean to cherry that quickly.
crfnaround said:ex gasket leaking could heatup header 2 ways. when theres pressure in the pipe during ex stroke, hot gasses will be forced out the leak. all that heat goin through there will start acting like a mini blow torch and could start chewing away at the mating surfaces. this shows up right where the pipe and head meet. after the ex valve closes all the gasses moving away from it create a low pressure area in the port (scavanging). this could draw in fresh air/oxygen and with all the heat it there it burns the excess fuel in the pipe. i think this would show up a little further into the pipe. maybe as far as the bend down there. but to be honest with you, im new to pm and just started/finished building up my fiddie (had it for bout a year now). the things above are jus where i would start lookin.
CorrectJetster220 said:Well Im sure FIve0 is way off on not having oil as that is certainly not the problem. Its more than likely, CALLED A 4STROKE HEADER, they get hot and they can glow at night. Happens on the bigger bikes all the time, they will glow a bright cherry red seconds after startup just like you said, its just most people dont notice it.