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jjmaine · December 1st, 2022, 12:44 PM

I just checked my valves and 3 on the tighter sode of in spec and 1 was just out of spec (too tight). After getting shims and playing the swap game I now have 3 exhaust valves that are right in the middle of spec spec is (.22-.29mm)and 1 valve is just in spec but on the loose side. It is either .28 or .29mm, it is hard to tell since I only have a .28mm and .30mm feeler gauges. The .28 goes in easy and feels just maybe a hair small and the .30 will only go in of I really force it.
The only thing I could do is swap shims with another valve but then that valve will end up on the high side of spec lol.
I guess my only choice is to leave it? I just hate having 1 valve not matching close with the others but at least it is on the loose side right? If anything the clearance should only get smaller?

December 1st, 2022, 12:44 PM	#1
jjmaine ninjette.org member Name: Justin Location: Maine Join Date: Jul 2016 Motorcycle(s): '05 Ninja 250, '16 Ninja 300 Posts: 113	Ninja 300 shimming valves question I just checked my valves and 3 on the tighter sode of in spec and 1 was just out of spec (too tight). After getting shims and playing the swap game I now have 3 exhaust valves that are right in the middle of spec spec is (.22-.29mm)and 1 valve is just in spec but on the loose side. It is either .28 or .29mm, it is hard to tell since I only have a .28mm and .30mm feeler gauges. The .28 goes in easy and feels just maybe a hair small and the .30 will only go in of I really force it. The only thing I could do is swap shims with another valve but then that valve will end up on the high side of spec lol. I guess my only choice is to leave it? I just hate having 1 valve not matching close with the others but at least it is on the loose side right? If anything the clearance should only get smaller?