Anyone Check Their Valve Clearances?

[bronsin]

Originally Posted by Flammable

Below is a link to an article I found about all the different valve types used in motorcycle engines. For "shim under bucket" valves the guy who wrote the article stated that as the miles pile up valves will tighten and it's better to have loose valves than tight valves. A quiet engine is trouble. Perhaps this is one reason why the Yaris engine is so noisy? Bronsin, is the info in this article been your experience with valves in general? Thanks!

http://www.revzilla.com/common-tread...alve-adjusters

The valves tighten with this design because the heads of the valves wear into the seats. Its a very SLOW process. When you have a high quality eningne such as ours, in effect there is so little wear as to be meaningless. Now...an American or Euro car...not so much!

My Yaris engine and my sons ECHO engine with 200k on it are QUIET. If your engine is noisy have the clearances checked. IF they are loose have them adjusted (murder) and see if the engine is now quiet. Its the only way to know!