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Fred =E2=80=93 Kees is right. I believe that the problem is the split =
washers. The factory used a flat washer only =E2=80=93 no lock washer =
at all - along with the special tall brass nut. The idea is that the =
less material there is for expansion / contraction. in that very hot =
environment, the less chance of problems. I have been using a thin =
stainless flat washer for years on both Healeys =E2=80=93 I=E2=80=99ve =
never had loosening problems (they need to be checked after the initial =
few start cycles, say 100 miles or so, and then maybe at the next =
service). I=E2=80=99ve also never torqued the flange nuts, just =
tightened them hard.
As a related aside, I=E2=80=99ve had better success over the years with =
the copper faced flange gaskets. The other type seems to blow out a bit =
easier.
Earl Kagna
Victoria, B.C.
BJ8, BT7 tri-carb
From: Fred Wescoe=20
Sent: Wednesday, October 16, 2019 5:46 PM
To: healeys=20
Subject: [Healeys] Down pipes
Listers,=20
Today, I had to tighten the 6 nuts on my exhaust down pipes. This is =
the 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 washers and brass nuts on the down pipe flanges. Each time =
time I have tightened the nuts, I tighten them until the nuts squeak.
What am I doing wrong and does anyone else have this issue? What do I =
need to do to fix this? The car is a 66 BJ8 with stock manifolds and =
down pipes.
Thanks for any advice, I'm stumped,
Fred
66 BJ8
-------------------------------------------------------------------------=
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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
http://autox.team.net/mailman/options/healeys/kags@shaw.ca
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<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Arial'; COLOR: #141100">
<DIV>Fred =E2=80=93 Kees is right. I believe that the problem is =
the split=20
washers. The factory used a flat washer only =E2=80=93 no lock =
washer at all=20
- along with the special tall brass nut. The idea is that =
the less=20
material there is for expansion / contraction. in that very hot =
environment, the=20
less chance of problems. I have been using a thin stainless flat =
washer=20
for years on both Healeys =E2=80=93 I=E2=80=99ve never had loosening =
problems (they need to be=20
checked after the initial few start cycles, say 100 miles or so, and =
then maybe=20
at the next service). I=E2=80=99ve also never torqued the flange =
nuts, just=20
tightened them hard.</DIV>
<DIV> </DIV>
<DIV>As a related aside, I=E2=80=99ve had better success over the years =
with the copper=20
faced flange gaskets. The other type seems to blow out a bit =
easier.</DIV>
<DIV> </DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Arial'; COLOR: =
#141100">Earl=20
Kagna<BR>Victoria, B.C.<BR>BJ8, BT7 tri-carb</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dfredwescoe@gmail.com=20
href=3D"mailto:fredwescoe@gmail.com";>Fred Wescoe</A> </DIV>
<DIV><B>Sent:</B> Wednesday, October 16, 2019 5:46 PM</DIV>
<DIV><B>To:</B> <A title=3DHealeys@autox.team.net=20
href=3D"mailto:Healeys@autox.team.net";>healeys</A> </DIV>
<DIV><B>Subject:</B> [Healeys] Down pipes</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>Listers,=20
<DIV> </DIV>
<DIV>Today, I had to tighten the 6 nuts on my exhaust down pipes. =
This is=20
the second time in 2 years I have had to do this. What is causing =
the nuts=20
to work loose? Each of the 6 studs from the exhaust manifolds has =
split=20
lock washers and brass nuts on the down pipe flanges. Each time =
time I=20
have tightened the nuts, I tighten them until the nuts squeak.</DIV>
<DIV> </DIV>
<DIV>What am I doing wrong and does anyone else have this issue? =
What do I=20
need to do to fix this? The car is a 66 BJ8 with stock manifolds =
and down=20
pipes.</DIV>
<DIV> </DIV>
<DIV>Thanks for any advice, I'm stumped,</DIV>
<DIV> </DIV>
<DIV>Fred</DIV>
<DIV>66 BJ8</DIV></DIV>
<P>
<HR>
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ox.team.net/mailman/listinfo/healeys<BR><BR>Unsubscribe/Manage:=20
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