I had a post on here about a year ago http://www.thumperta.../#entry11540068
Basically, I had an electrical issue of a dead battery everytime I road the bike 50 miles or so and the bike could not be started. I had replaced the battery (twice), stator, voltage regulator, and finally wiring harness. I had mentioned that when the battery was dead, I could not start the bike even by kick start. I believe I have resolved the electrical issue as the last ride I went on, I had stopped but the bike would not start, but the starter was at least turning. People had mentioned that the bike does not need a battery to be kick started so it appears there were multiple issues with the bike. Prior to replacing all the electrical components, I had the carburator tuned and the valves adjusted. The mechanic told me the valves needed adjustments and did the work.
Anyhow, I still have the WR450 sitting in my garage and tore into it today. I checked the valve clearances and found the exhaust in spec, but the intake was 0.0015"; I can not even fit a 2 thousandths feeler guage in it. According to my book .0039 is the miniumum.
So the question in my mind is: did the guy mess up, or do I have a more serious problem?
Does the clearances close on wear?
I may note that the bike never got past 300 miles after he serviced it.
I have talked to a number of folks about the problem and they indicated that the top end needs rebuilt. Further they state that if I rebuild the top I should put a new piston and rings in it. Before I know it, they want $1500 to fix the darn thing. Probably should note that the bike has about 8-9k miles on it.
Is there really anything I should do other than put a new intake valve in it?
Edited by RIP_PonyExpress, February 20, 2015 - 08:43 PM.