CanadaFZ6
Active Member
I am thinking I am not going to bother taking the cams out and all the hassle that goes with swapping the shim. Did the first valve check late, 47,000km on the dash. (40k first check)
I have no tight valves (intake 0.13-0.20, ex 0.23-0.30), infact, I have a couple exhaust valves that are around 0.33 mm, 0.03mm looser than what Yamaha states as max spec. Tight valves are dangerous because they can get super hot and end up dropping and destroying a motor blah blah. But what about a tiny bit loose, besides that they are tickier when loose?
What do you say? Adjust down to within spec or not?
This is not my first valve check on a bike, I think I have a decent feel for the drag, and not forcing the feeler to the point it compresses the spring a tiny amount giving a false reading or anything. The only thing I can think of is that they were set a tiny bit on a loose side from the factory, and haven't moved at all since....
I have no tight valves (intake 0.13-0.20, ex 0.23-0.30), infact, I have a couple exhaust valves that are around 0.33 mm, 0.03mm looser than what Yamaha states as max spec. Tight valves are dangerous because they can get super hot and end up dropping and destroying a motor blah blah. But what about a tiny bit loose, besides that they are tickier when loose?
What do you say? Adjust down to within spec or not?
This is not my first valve check on a bike, I think I have a decent feel for the drag, and not forcing the feeler to the point it compresses the spring a tiny amount giving a false reading or anything. The only thing I can think of is that they were set a tiny bit on a loose side from the factory, and haven't moved at all since....