I broke a rocker this fall and I m going to replace them all before next season, they were manufactured in 1998 and must have several hundred runs ...

that got me thinking about the valves, I have replaced the exhaust valves but I m not sure how old the intake valves are, there must be a limit on how long you can run them, anyone knows?

I m not interested in finding out on my own

valves are titanium, I believe they are Manleys