****, I used one set of valves from October 2003 up until August of 2006 w/out a problem. They're getting replaced by Tim right now, but no problems for me, even through several race seasons. I don't recommend going that long though.
****, I used one set of valves from October 2003 up until August of 2006 w/out a problem. They're getting replaced by Tim right now, but no problems for me, even through several race seasons. I don't recommend going that long though.
I dont pull the engine just to replace them at one year. If they are older than a year and the head is off for porting or whatever new set goes in. That may be several years . He was looking for replacement criteria.
Guys lets not go cheap on motors.Valves are less than $15 a piece I believe.Not even worth cleaning carbon off to check them.Dont listen to me or Wistech.Read manuals,Mags and anything else after a year of racing valves,springs,retainers and have even heard spring seats should ALL be replaced along with timing chain and piston.Now of course this isnt for everbody but that is the safe way and what is industry wide considered the"RIGHT" way.
