08-17-2012, 04:57 AM
2 weeks ago i cracked the head on my 04 636 had it welded up and i pulled the cams to look to see how far down the crack went because it was in the timing chain area. i put it together a few times but could never get the timing right. i went through the posses 6 or 7 times maybe more, i would always turn it over my hand first before trying to start it to make sure i didnt have any clearance issues. and finally after failing to have to start up and sound like its supposed to i decided to pull the cams out to check if i had a bent valve. after looking at the valve tappets on the exhaust side, i noticed not one of them was even with any of the other ones. one was really high up pulled the tappet off and the valve keepers fell out and the valve dropped. another one is stuck 1/16th inch below where its supposed to sit. and the rest just have weak springs. i know i have to replace all the valves and springs on the exhaust side, so basically my question is who is the best place for aftermarket parts because i know nothing of the street bike after market??