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Fred,
Engine exhaust heat and engine vibration will eventually loose almost anythi=
ng. Heat is biggest problem due to metal expansion. That=E2=80=99s why it is=
recommended that head bolts be retightened after run in after a few heat cy=
cles. Thinner jam nuts are made for double nutting for just this case. Only t=
ighten what torque spec says. The spec tables will take into account materia=
l grade, # of threads/inch and bolt dia. Torque specs are available in a num=
ber of places.=20
Jerry Adams
BN 2
Sent from my iPhone
> On Oct 17, 2019, at 12:24 PM, Bob Spidell <bspidell@comcast.net> wrote:
>=20
> =EF=BB=BF
>=20
>=20
>=20
> Begin forwarded message:
>=20
>> From: Bob Spidell <bspidell@comcast.net>
>> Date: October 17, 2019 at 8:21:17 AM PDT
>> To: Fred Wescoe <fredwescoe@gmail.com>
>> Subject: Re: [Healeys] Down pipes
>>=20
>> =EF=BB=BFI tried everything: new nuts, SS studs and torquing the snot out=
of the nuts (snapping a stud in the process) and still they would work loos=
e. Finally gave up and double-nutted with mild steel nuts with high-temp an=
ti-seize on the studs; they haven=E2=80=99t loosened since.
>>=20
>>> On Oct 16, 2019, at 6:19 PM, Fred Wescoe <fredwescoe@gmail.com> wrote:
>>>=20
>>> =EF=BB=BF
>>> Listers,
>>>=20
>>> Today, I had to tighten the 6 nuts on my exhaust down pipes. This is th=
e second time in 2 years I have had to do this. What is causing the nuts to=
work loose? Each of the 6 studs from the exhaust manifolds has split lock w=
ashers and brass nuts on the down pipe flanges. Each time time I have tight=
ened the nuts, I tighten them until the nuts squeak.
>>>=20
>>> What am I doing wrong and does anyone else have this issue? What do I n=
eed to do to fix this? The car is a 66 BJ8 with stock manifolds and down pi=
pes.
>>>=20
>>> Thanks for any advice, I'm stumped,
>>>=20
>>> Fred
>>> 66 BJ8
>>> _______________________________________________
>>> Support Team.Net http://www.team.net/donate.html
>>> Suggested annual donation $12.75
>>>=20
>>> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/arc=
hive
>>>=20
>>> Healeys@autox.team.net
>>> http://autox.team.net/mailman/listinfo/healeys
>>>=20
>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/bspide=
ll@comcast.net
>>>=20
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>=20
> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archi=
ve
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ams@yahoo.com
>=20
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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">Fred,<div>Engine exhaust heat and engine vi=
bration will eventually loose almost anything. Heat is biggest problem due t=
o metal expansion. That=E2=80=99s why it is recommended that head bolts be r=
etightened after run in after a few heat cycles. Thinner jam nuts are made f=
or double nutting for just this case. Only tighten what torque spec says. Th=
e spec tables will take into account material grade, # of threads/inch and b=
olt dia. Torque specs are available in a number of places. </div><div><=
br></div><div>Jerry Adams</div><div>BN 2<br><br><div dir=3D"ltr">Sent from m=
y iPhone</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Oct 17, 2019=
, at 12:24 PM, Bob Spidell <bspidell@comcast.net> wrote:<br><br></bloc=
kquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<meta http-=
equiv=3D"content-type" content=3D"text/html; charset=3Dutf-8"><div dir=3D"lt=
r"><br><br><br>Begin forwarded message:<br><br></div><blockquote type=3D"cit=
e"><div dir=3D"ltr"><b>From:</b> Bob Spidell <bspidell@comcast.net><br=
><b>Date:</b> October 17, 2019 at 8:21:17 AM PDT<br><b>To:</b> Fred Wescoe &=
lt;fredwescoe@gmail.com><br><b>Subject:</b> <b>Re: [Healeys] Down p=
ipes</b><br><br></div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr=
">=EF=BB=BF<span>I tried everything: new nuts, SS studs and torquing the sno=
t out of the nuts (snapping a stud in the process) and still they would work=
loose. Finally gave up and double-nutted with mild steel nuts with hi=
gh-temp anti-seize on the studs; they haven=E2=80=99t loosened since.</span>=
<br><span></span><br><blockquote type=3D"cite"><span>On Oct 16, 2019, at 6:1=
9 PM, Fred Wescoe <fredwescoe@gmail.com> wrote:</span><br></blockquote=
><blockquote type=3D"cite"><span></span><br></blockquote><blockquote type=3D=
"cite"><span>=EF=BB=BF</span><br></blockquote><blockquote type=3D"cite"><spa=
n>Listers,</span><br></blockquote><blockquote type=3D"cite"><span></span><br=
></blockquote><blockquote type=3D"cite"><span>Today, I had to tighten the 6 n=
uts on my exhaust down pipes. This is the second time in 2 years I hav=
e had to do this. What is causing the nuts to work loose? Each o=
f the 6 studs from the exhaust manifolds has split lock washers and brass nu=
ts on the down pipe flanges. Each time time I have tightened the nuts,=
I tighten them until the nuts squeak.</span><br></blockquote><blockquote ty=
pe=3D"cite"><span></span><br></blockquote><blockquote type=3D"cite"><span>Wh=
at am I doing wrong and does anyone else have this issue? What do I ne=
ed to do to fix this? The car is a 66 BJ8 with stock manifolds and dow=
n pipes.</span><br></blockquote><blockquote type=3D"cite"><span></span><br><=
/blockquote><blockquote type=3D"cite"><span>Thanks for any advice, I'm stump=
ed,</span><br></blockquote><blockquote type=3D"cite"><span></span><br></bloc=
kquote><blockquote type=3D"cite"><span>Fred</span><br></blockquote><blockquo=
te type=3D"cite"><span>66 BJ8</span><br></blockquote><blockquote type=3D"cit=
e"><span>_______________________________________________</span><br></blockqu=
ote><blockquote type=3D"cite"><span>Support Team.Net http://www.team.net/don=
ate.html</span><br></blockquote><blockquote type=3D"cite"><span>Suggested an=
nual donation $12.75</span><br></blockquote><blockquote type=3D"cite">=
<span></span><br></blockquote><blockquote type=3D"cite"><span>Archive: http:=
//www.team.net/pipermail/healeys http://autox.team.net/archive</span><br></b=
lockquote><blockquote type=3D"cite"><span></span><br></blockquote><blockquot=
e type=3D"cite"><span>Healeys@autox.team.net</span><br></blockquote><blockqu=
ote type=3D"cite"><span>http://autox.team.net/mailman/listinfo/healeys</span=
><br></blockquote><blockquote type=3D"cite"><span></span><br></blockquote><b=
lockquote type=3D"cite"><span>Unsubscribe/Manage: http://autox.team.net/mail=
man/options/healeys/bspidell@comcast.net</span><br></blockquote><blockquote t=
ype=3D"cite"><span></span><br></blockquote></div></blockquote><span>________=
_______________________________________</span><br><span>Support Team.Net htt=
p://www.team.net/donate.html</span><br><span>Suggested annual donation  =
;$12.75</span><br><span></span><br><span>Archive: http://www.team.net/piperm=
ail/healeys http://autox.team.net/archive</span><br><span></span><br><span>H=
ealeys@autox.team.net</span><br><span>http://autox.team.net/mailman/listinfo=
/healeys</span><br><span></span><br><span>Unsubscribe/Manage: http://autox.t=
eam.net/mailman/options/healeys/cjerryadams@yahoo.com</span><br><span></span=
><br></div></blockquote></div></body></html>=
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_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
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