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Re: [TR] would any of you re-use head studs?

To: list Triumph <triumphs@autox.team.net>
Subject: Re: [TR] would any of you re-use head studs?
From: Cliff Hansen <cliff_hansen@outlook.com>
Date: Wed, 17 Mar 2021 14:50:40 +0000
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Thread-topic: would any of you re-use head studs?
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Thanks to all of you who replied, either on the list or privately. I apprec=
iate your advice.

All replies say that it is fine to re-use the studs and nuts, provided the =
threads of both are in good shape and there is no corrosion etc. on the stu=
ds. The key is to achieve proper clamping, which requires the threads to be=
 in good condition so as not to waste torque overcoming thread friction.

After a good cleaning, I chased the threads on both nut and stud, noting no=
 removal of metal from any of these pieces. Nuts spin freely down to the en=
d of the stud thread. I=92ll be re-using them, just as soon as I can get on=
e exhaust valve (out of stock where I=92ve looked but expected soon, seems =
to be a common feature of supply chains these days.).

Best regards,

Cliff


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

Sent: Tuesday, March 9, 2021 12:06 PM
Subject: would any of you re-use head studs?

I respect your collective advice and experience. The 4A=92s head is at the =
machinist for a cleanup (head gasket failure). Would any of you re-use the =
head studs, or would you replace them? They are likely original, and even i=
f not, have been in place for at least 25 years. I have my thoughts on this=
, but am interested in yours.

Thanks,

Cliff


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



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<p class=3D"MsoNormal">Thanks to all of you who replied, either on the list=
 or privately. I appreciate your advice.</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">All replies say that it is fine to re-use the studs =
and nuts, provided the threads of both are in good shape and there is no co=
rrosion etc. on the studs. The key is to achieve proper clamping, which req=
uires the threads to be in good condition
 so as not to waste torque overcoming thread friction.</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">After a good cleaning, I chased the threads on both =
nut and stud, noting no removal of metal from any of these pieces. Nuts spi=
n freely down to the end of the stud thread. I=92ll be re-using them, just =
as soon as I can get one exhaust valve
 (out of stock where I=92ve looked but expected soon, seems to be a common =
feature of supply chains these days.).</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Best regards,</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>
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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:cliff_hansen@outlook.com";>Cliff Hansen</a><br>
<b>Sent: </b>Tuesday, March 9, 2021 12:06 PM<br>
<b>To: </b><a href=3D"mailto:triumphs@autox.team.net";>list Triumph</a><br>
<b>Subject: </b>would any of you re-use head studs?</p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I respect your collective advice and experience. The=
 4A=92s head is at the machinist for a cleanup (head gasket failure). Would=
 any of you re-use the head studs, or would you replace them? They are like=
ly original, and even if not, have been
 in place for at least 25 years. I have my thoughts on this, but am interes=
ted in yours.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Thanks,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Cliff<o:p></o:p></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<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
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