Subject: [TR] Valve Stem Wear

From: George Haynes <[email-masked]>
Date: Sun, 2 May 2021 18:39:23 +0000 (UTC)

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Had the rocker shaft off my TR4A recently and found several valve stem tips=
 pitted and peened over.=C2=A0
Metal was displaced so a finger nail could feel it. =C2=A0Would you call it=
 Galling? =C2=A0Head was done about 35K miles ago.
I've never seen this before.=C2=A0Stock Crane camshaft, valve springs and t=
ubular pushrods. Valvoline VR-1 20W-50=C2=A0oil.
The rocker arm pads have been ground at what was supposed to be the correct=
 radius. =C2=A0Don't know how to verify that.
Has anyone experienced this? =C2=A0How does it happen? =C2=A0My inclination=
 is to replace the all valves and rockers.

Thanks=C2=A0for any insight!
George HaynesCTC55423LO
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<div style="color:black;font: 10pt arial;"><span style="font-size: 10pt; background-color: transparent;">Had the rocker shaft off my TR4A recently and found several valve stem tips pitted and peened over.&nbsp;</span><br>

<div>
<div>Metal was displaced so a finger nail could feel it. &nbsp;Would you call it Galling? &nbsp;<span></span><span style="font-size: 10pt; background-color: transparent;">Head was done about 35K miles ago.</span></div>

<div><br>
</div>

<div>I've never seen this before.&nbsp;<span style="font-size: 10pt; background-color: transparent;">Stock Crane camshaft, valve springs and tubular pushrods. Valvoline VR-1 20W-50&nbsp;</span>oil.</div>

<div><br>
</div>

<div>The rocker arm pads have been ground at what was supposed to be the correct radius. &nbsp;Don't know how to verify that.</div>

<div><br>
</div>

<div><span style="font-size: 10pt; background-color: transparent;">Has anyone experienced this? &nbsp;How does it happen? &nbsp;My inclination is to replace the all valves and rockers.</span><br>
</div>

<div><span style="font-size: 10pt; background-color: transparent;"><br>
</span></div>

<div><span style="font-size: 10pt; background-color: transparent;">Thanks&nbsp;</span>for any insight!</div>

<div><br>
</div>

<div>George Haynes</div>

<div>CTC55423LO</div>
</div>
</div>

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** [email-masked] **

Archive: http://www.team.net/pipermail/triumphs  http://www.team.net/archive

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From: Cliff Hansen <[email-masked]>
Date: Sun, 2 May 2021 21:19:54 +0000

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I=92d suspect the valves and not replace the rockers unless they show a wea=
r pattern. The softer of the two metal surfaces would deform.

Just my $0.20 ($0.02 after inflation)

Cliff

Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=3D550986> for Window=
s 10

Sent: Sunday, May 2, 2021 12:43 PM
Subject: [TR] Valve Stem Wear

Had the rocker shaft off my TR4A recently and found several valve stem tips=
 pitted and peened over.
Metal was displaced so a finger nail could feel it.  Would you call it Gall=
ing?  Head was done about 35K miles ago.

I've never seen this before. Stock Crane camshaft, valve springs and tubula=
r pushrods. Valvoline VR-1 20W-50 oil.

The rocker arm pads have been ground at what was supposed to be the correct=
 radius.  Don't know how to verify that.

Has anyone experienced this?  How does it happen?  My inclination is to rep=
lace the all valves and rockers.

Thanks for any insight!

George Haynes
CTC55423LO

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<p class=3D"MsoNormal">I=92d suspect the valves and not replace the rockers=
 unless they show a wear pattern. The softer of the two metal surfaces woul=
d deform.</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Just my $0.20 ($0.02 after inflation)</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Cliff</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Sent from <a href=3D"https://go.microsoft.com/fwlink=
/?LinkId=3D550986">
Mail</a> for Windows 10</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div style=3D"mso-element:para-border-div;border:none;border-top:solid #E1E=
1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class=3D"MsoNormal" style=3D"border:none;padding:0in"><b>From: </b><a hr=
ef=3D"mailto:[email-masked]">George Haynes</a><br>
<b>Sent: </b>Sunday, May 2, 2021 12:43 PM<br>
<b>To: </b><a href=3D"mailto:[email-masked]">[email-masked]=
et</a><br>
<b>Subject: </b>[TR] Valve Stem Wear</p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">Had the rocker shaft off my TR4A recently=
 and found several valve stem tips pitted and peened over.&nbsp;<o:p></o:p>=
</span></p>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">Metal was displaced so a finger nail coul=
d feel it. &nbsp;Would you call it Galling? &nbsp;Head was done about 35K m=
iles ago.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">I've never seen this before.&nbsp;Stock C=
rane camshaft, valve springs and tubular pushrods. Valvoline VR-1 20W-50&nb=
sp;oil.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">The rocker arm pads have been ground at w=
hat was supposed to be the correct radius. &nbsp;Don't know how to verify t=
hat.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">Has anyone experienced this? &nbsp;How do=
es it happen? &nbsp;My inclination is to replace the all valves and rockers=
.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">Thanks&nbsp;for any insight!<o:p></o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">George Haynes<o:p></o:p></span></p>
</div>
</div>
</div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,sans-serif;color:black">CTC55423LO<o:p></o:p></span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
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