<style>@font-face{font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}</style><font face="Calibri"><p dir="ltr">Chipped cam lobe, cracked or holed lifter. </p>
<br><br>On August 21, 2017, at 9:01 PM, Peter Arakelian <PeterAra@msn.com> wrote:<br><br><br></font><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<div>first a thks to those who did respond to my problem: a loud clatter from the right rear of my cylinder head.</div>
<div>following advice I have done the following:</div>
<div>Listened through a hose to isolate the noise: Definelty #6 exhaust valve. Hose against the exhaust manifold loud clatter; against the block, it will make you deaf! Other valves are very quiet with similar test. Other side is quiet.</div>
<div>Compression: #6 was highest of all at 145 lbs. Rest were 135-140.</div>
<div>visual inspection: nothing broken, all working OK</div>
<div>Valve gap: all OK </div>
<div>Suggestions have been loose seat, blown exhaust gasket, bad pushrod, bad lifter.</div>
<div>Valve gap being OK pretty much rules out the bad seat, quiet on left side of head and block rules out lifter and pushrod.</div>
<div>Leaves gasket, but the noise seems isolated, and really loud and metallic from the head itself and the manifold right at #6 exhaust only.</div>
<div>Thoughts, please.</div>
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<div>Please respond to me direct, too, I am on digest version.</div>
<div> Peter Arakelian - 71 TR6</div>
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