i am currently re shimming my bike for the 3rd time in 6 months, the bike is a 2008 model but has not been riden hard at all, when i first did my shims i took the entire valve train head off to inspect the valves. the valves were practically brand new with very little wear. i then inspected the barrel and to my surprise, the manufacturers hone markings were still clear. lets consider the motor to be brand new, not even run in, would re shimming this amount of times be expected, or is there a problem im not seeing? would really appreciate if someone could help me on this matter.

it is just the intake valves that keep going. the clearance closes(smaller)

Start saving your pennies, a valve job is in your future!

The intakes are Ti (which are very soft), once the coating wears off they start sinking into the head and hence require constant adjustment. If you've already shimmed 3 times in 6 months I would be worried to ride it as you may cause some serious damage.

You'll need head work. At minimum, new intake valves and new seats. Wouldn't hurt to replace guides and springs at the same time as they are pretty cheap.

thanks so much for your reply. that was my first thought, but taking into account that the motors brand new and valves showed no wear i assumed it was a settlin(running in/seating) problem. but will get the valve train done asap.  would you recommend staying stock Ti valves or go the cheaper option with stainless valves. looking for durability? ive heard the stainless are reasonably good.

Valve life really depends on air filter maintenance too, so make sure you keep that clean so dirt doesn't get sucked into your intake a eat up your valves.

As far as SS valves, I believe the initial cost is slightly higher (they also require heavier valve springs) but they are much more durable!

Edited by CRF rider, 31 May 2012 - 01:42 PM.

thanks once again for your advice. will be doing them end month. and will try not be tempted to get seat time in. concerning price of SS valves, im out here in sunny South Africa and the price of stock Ti valves is roughly double the price of SS hence why i asked if they are better. but have spoken to a few trustworthy sources in the game and they have confirmed that hands down they prefer SS valves. so once again, thanks a mil.

best regards
and keep hanging cable.
peace