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Old 12-11-2012, 10:36 AM   #1
folknride OP
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Joined: Sep 2008
Location: Alberta, Canada
Oddometer: 692
Help - Valve specs and temperature

I'm doing a 30,000km valve check on my 2010 990 S here in my chilly garage in chilly Alberta. Specs are for 20C (room temp) and it's probably more like 5C in my garage. All valves are at the low end of spec except one exhaust that is about .03 mm tight. My question is does colder temps reduce or increase gap?
Should I change shims or leave it 'til next time?
Thanks for any advice from you good physics guys.
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