Subject: [TR] Valve ticking

From: [email-masked]
Date: Thu, 28 Jul 2022 13:58:08 +0000 (UTC)

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My 1976 TR6 has a little ticking sound at idle, as if a valve is sticking a=
 bit.=C2=A0 I am curious if I can assume that this is normal rattle on thes=
e engines as things wear or if I should start paying closer attention.=C2=
=A0 To my knowledge the valve seats have never been hardened.=C2=A0 I recen=
tly set the valve lash and believe it is spot on.=C2=A0 Engine has about 54=
,000 miles.=C2=A0 Also, does anyone use an oil additive on a regular basis =
and what has been your experience or recommendations.=C2=A0 Thanks for any =
ideas or suggestions.David Gill1976 TR6=C2=A0=C2=A0
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<div style="color:black;font: 10pt arial;">My 1976 TR6 has a little ticking sound at idle, as if a valve is sticking a bit.&nbsp; I am curious if I can assume that this is normal rattle on these engines as things wear or if I should start paying closer attention.&nbsp; To my knowledge the valve seats have never been hardened.&nbsp; I recently set the valve lash and believe it is spot on.&nbsp; Engine has about 54,000 miles.&nbsp; Also, does anyone use an oil additive on a regular basis and what has been your experience or recommendations.&nbsp; Thanks for any ideas or suggestions.
<div>David Gill</div>

<div>1976 TR6&nbsp;&nbsp;</div>
</div>

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From: Frank Magnusson <[email-masked]>
Date: Thu, 28 Jul 2022 18:53:28 -0500

Hi David,

It could be several things.  Some light ticking is normal.  
You might try an oil additive.  I’ve used Marvel Mystery oil with every oil chnage for many years and I first started using it after I had a sticking valve on a Chevy Impala at the suggestion of a mechanic and it freed that sticking valve right up.  I’ve used it ever since.
It could also be your valves needing adjustment, but it sounds like you’ve done that.  You might recheck it to make sure that an adjustment nut didn’t come loose.
Lastly, pull the valve cover off and make sure that you dont have a broken valve spring.
 I had a light valve ticking on my GT6, which sounded different than usual and it turned out to be a broken valve spring.  
Hope this helps,
Frank

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From: bill beecher <[email-masked]>
Date: Fri, 29 Jul 2022 18:17:38 -0500

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">For checking the tapper clearance, a flat b=
lade is best.&nbsp;<div><br></div><div>Two years ago I had a TR3 motor, in a=
 Morgan, that had a tick that I could not resolve. &nbsp;After many times ch=
ecking, even bring them down to .008=E2=80=9D, did not change.&nbsp;</div><d=
iv><br></div><div>10 minutes later, the rocker arm rail snapped off just at t=
he #8 tappet. &nbsp; Probably not your problem, but it can happen.&nbsp;</di=
v><div><br></div><div>Good luck,</div><div>Bill B</div><div><br><br><div dir=
=3D"ltr">=E2=80=9CDo your best, and let the sparrows twitter=E2=80=9D &nbsp;=
Lofty</div><div dir=3D"ltr"><br>On Jul 29, 2022, at 6:05 PM, Cliff Hansen &l=
t;[email-masked]&gt; wrote:<br><br></div><div dir=3D"ltr">=EF=BB=BF=

<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-12=
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<div class=3D"WordSection1">
<p class=3D"MsoNormal">Do you think a length of 30 gauge steel wire would do=
 as a feeler gauge? It=E2=80=99s nominally 0.010=E2=80=9D diameter.</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/=
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E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class=3D"MsoNormal" style=3D"border:none;padding:0in"><b>From: </b><a hre=
f=3D"mailto:[email-masked]">Christopher A Kantarjiev</a><br>
<b>Sent: </b>Friday, July 29, 2022 3:39 PM<br>
<b>To: </b><a href=3D"mailto:[email-masked]">[email-masked]=
t</a><br>
<b>Subject: </b>Re: [TR] Valve ticking</p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">On 7/29/22 11:00 AM, [email-masked] w=
rote:<br>
&gt;&nbsp;&nbsp; You'd have to have a very slim feeler gauge to adjust them c=
orrectly.<br>
<br>
Indeed. I have a feeler gauge set that is round wires rather than flat <br>
blades, and it makes this measurement a lot easier. But if your rocker <br>
arm tips are wearing unevenly, you've probably gone through the hardened <br=
surface (and might also be getting wear on the bushing that you can't <br>
see) ... so it might be time for a rebuild. More about that in a second ...<=
br>
<br>
I use a tool called Gunson Clik-Adjust to set valve clearances, because <br>=

it takes the entire wear of the system into account. Rather than <br>
measuring only the clearance at the tip, it works from the point where <br>
the entire rocker arm system is tight against the valve stem and then <br>
backs out in a controlled fashion. It seemed hokey, but it works quite well.=
<br>
<br>
When I first got my TR4A, it had really low oil pressure. I did a bunch <br>=

of work on the bottom end, to little effect. Someone suggested the <br>
rockers - the shaft and bushings were *very* worn to the point that much <br=
of my oil pressure was disappearing there. I sent the assembly off to <br>
Rocker Arm Specialists in Northern California; they transformed my worn <br>=

out rocker train into a thing of beauty. I sent them a lot of work over <br>=

the years (and sent a lot of others their way). Sadly, the proprietor <br>
sold the business in order to retire, and the new owners didn't make a <br>
go of it ... but it appears that they're back!<br>
<br>
<a href=3D"http://www.rockerarms.com/pages/about.html">http://www.rockerarms=
.com/pages/about.html</a><br>
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