newdean0 0 Posted April 8, 2006 I'm trying to decide whether my valve guides need replacing so I have measured the clearances between the valve stems and the guide at the cylinder side of the exhaust valves (I guessed this is where most wear is likely to occur). I got (this might be rubbish as I was never taught how to use imperial guages ) Valve stem - 274 thou Valve guide - 276 thou giving 2 thou clearance. Now this seems pretty tight (I've seen 3 thou as normal for exhaust valves on an American website), though when you fit the valve into the guide a try to wobble it side to side you can a tiny bit. So, my question is, do those measurements look anything like correct and is a tiny amount of side to side wobble on a valve acceptable? I haven't measured the inlets yet but these seem a little tighter than the exhaust side. Cheers Dean Share this post Link to post Share on other sites
PumaRacing 2 Posted April 8, 2006 On an 8mm stem in bronze guides 1 thou is enough for inlet valves and 1.5 to 2 thou for exhaust valves so yours are fine. Share this post Link to post Share on other sites
