03 600rr valve adjustment - 600RR.net
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post #1 of 4 (permalink) Old 03-13-2019, 08:50 PM Thread Starter
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03 600rr valve adjustment

Hey all,

First time doing a valve adjustment on my 03 600rr track bike. Got to say....this is quite the process (my first time !). I am presently done pulling all the buckets and the old shims. I measured all the old shims using my mastercraft digital caliper and i noticed that the reading is off by a bit for most of them. Example: shim reads 190 but im getting 188.

In all cases my reading is lower than what was written on the shim. Is this normal as they are old shims and they get worn out? Or should I be using the stated measurement regardless.

Would like any help as this is my last step before calculating what new shims I require.

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post #2 of 4 (permalink) Old 03-14-2019, 01:08 AM
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I would get some shim stock of known thickness (use your shim stock pack if you have one) and check the accuracy of the calipers you're using. If the shim is stamped 190, it should be 190. Under bucket shims should not wear down.
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post #3 of 4 (permalink) Old 03-14-2019, 10:35 AM Thread Starter
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Thanks for the reply.

What I was thinking. It seemed odd that I was reading slightly smaller, it must have been my tool or measurement that was slightly off.
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post #4 of 4 (permalink) Old 03-14-2019, 07:54 PM
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If this is for your track bike then I would suggest you set the clearances at the upper limits of the adjustment range.

I've just had a race motor refreshed by a top engine builder (Chris Mehew) in the UK and he has also actually set mine slightly wider than a street engine. But it does have a skimmed head and a porting job, with race valves and springs.
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