Recent content by BlueFlag

So, I report back after I replaced the keepers and retainers (also on the second exhaust valve as a precaution). At first I was worried because I couldn’t see any obvious wear on the old keepers and retainers but after I put the new in, it was apparent that the shim was sitting higher relative...

I stumbled upon a same issue with my engine. I was running a bit tight on the left exhaust valve so I changed the shim for thinner OEM KTM replacement shim which did’t have tapered edge (the old one did) and the clearance lowered. After reading this thread I suspected the new shim was sitting on...

Hi, I’m having the same issue as you described with your RC390. I was running a bit tight on the left exhaust valve so I changed the shim for a thinner one but the clearance lowered. The new shim doesn’t have a taper on the edge but the old does. Did you have to change the valves? Did it help...