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Civic has 214k miles. I was too tired to check / adjust valve clearances when I did my timing belt last month. I'm worried of a potential that the valve clearances might be too tight and burn a valve. At this mileage, is there any risk of doing valve clearance adjustment? It's probably never been done since leaving the factory. If I do it, I plan on adjusting tight valves just within spec on the tight-end, and loose valves just within spec of the loose-end.

I've done valve adjustment with bucket-over-shim sport bikes but I'm still not sure if there's any risk in doing it at this high of a mileage.

 
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I wouldn't think so. I did mine at 192k miles, don't even think I did that good of a job at it at that, and didn't notice any problems from it. As long as you keep it within tolerances it should be fine. I went back through the set of valves to check the tolerances before closing up.

 
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If anything, it'll help. Definitely keep it within tolerances, and make sure you're doing it with the head cold (<100F)

D17A1 (dx/lx - 1.7L SOHC non-VTEC) adjuster nut torque is 13 ft-lbs (156 in-lb)
D17A2 (ex - 1.7L SOHC VTEC) adjuster nut torque is 14 ft-lbs (168 in-lb)
Intake clearance spec is .007"-.009" (.18-.22mm)
Exhaust clearance spec is .009"-.011" (.23-.27mm)

Every time I did mine on my 2002 civic, I used .008 and .010 feeler gauges for intake and exhaust, respectively.

 
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Sounds good i'll give it a crack in one of the upcoming weekends.

Thanks for the feedback

 
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I have a 2002 SI.
Are the clearance specs the same?

 
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No. Two vastly different engines.

Intake specs appear to be the same at 0.007-0.009, but the exhaust are set at 0.011-0.013.