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Bill brings up something that I have thought about occasionally over the la=
st 50 years, why is there a section of flex pipe used in the original produ=
ction of Austin Healey=E2=80=99s? I mention production because I=E2=80=99m=
not sure what was on the first prototype cars. Todays stainless or mesh ty=
pe flex pipe does actually move even after the pipe has =E2=80=9Caged=E2=80=
=9D a bit. Not so much for the older mild steel versions. Once they take a =
set (rust) there is not much movement, but usually breakage.=20
My take on the flex pipe on Austin Healey is that it makes it a lot easier =
to fit the pieces together on the car. Exhaust manifold outlet(s) are fixed=
points. Same with the inlet(s} to the muffler. To get a perfectly parallel=
set of down pipes outlets into the muffler and still fit the exhaust manif=
old would be hard without the flex pipe sections. Note that the factory wel=
ded the two tail pipes together on the later 100-Six/early 3000.=20
OK I=E2=80=99m going back to sleep. Perhaps I=E2=80=99ll dream about why t=
he oil drips out of my gearbox/OD even with fresh =E2=80=9CO=E2=80=9D rings=
=E2=80=A6.
Perry
Sent from Mail for Windows 10
From: WILLIAM B LAWRENCE
Sent: Friday, October 18, 2019 12:50 AM
To: i erbs; Bob Spidell
Cc: Ahealey help
Subject: Re: [Healeys] Fwd: Down pipes
The rubber mounts shouldn't cause a problem, but the flexible sections of t=
he down pipes may have become too stiff to flex, in which case the relative=
motion of the engine to the chassis may be transmitted to the down pipe fl=
anges.
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--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal>Bill brings up something that I have=
thought about occasionally over the last 50 years, why is there a section =
of flex pipe used in the original production of Austin Healey=E2=80=99s?=C2=
=A0 I mention production because I=E2=80=99m not sure what was on the first=
prototype cars. Todays stainless or mesh type flex pipe does actually move=
even after the pipe has =E2=80=9Caged=E2=80=9D a bit. Not so much for the =
older mild steel versions. Once they take a set (rust) there is not much mo=
vement, but usually breakage. </p><p class=3DMsoNormal>My take on the flex =
pipe on Austin Healey is that it makes it a lot easier to fit the pieces to=
gether on the car. Exhaust manifold outlet(s) are fixed points. Same with t=
he inlet(s} to the muffler. To get a perfectly parallel set of down pipes o=
utlets into the muffler and still fit the exhaust manifold would be hard wi=
thout the flex pipe sections. Note that the factory welded the two tail pip=
es together on the later 100-Six/early 3000. </p><p class=3DMsoNormal>OK I=
=E2=80=99m going back to sleep.=C2=A0 Perhaps I=E2=80=99ll dream about why =
the oil drips out of my gearbox/OD even with fresh =E2=80=9CO=E2=80=9D ring=
s=E2=80=A6.</p><p class=3DMsoNormal>Perry</p><p class=3DMsoNormal><o:p>&nbs=
p;</o:p></p><p class=3DMsoNormal>Sent from <a href=3D"https://go.microsoft.=
com/fwlink/?LinkId=3D550986">Mail</a> for Windows 10</p><p class=3DMsoNorma=
l><o:p> </o:p></p><div style=3D'mso-element:para-border-div;border:non=
e;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=3DMsoN=
ormal style=3D'border:none;padding:0in'><b>From: </b><a href=3D"mailto:ynot=
ink@msn.com">WILLIAM B LAWRENCE</a><br><b>Sent: </b>Friday, October 18, 201=
9 12:50 AM<br><b>To: </b><a href=3D"mailto:eyera3000@gmail.com";>i erbs</a>;=
<a href=3D"mailto:bspidell@comcast.net";>Bob Spidell</a><br><b>Cc: </b><a h=
ref=3D"mailto:healeys@autox.team.net";>Ahealey help</a><br><b>Subject: </b>R=
e: [Healeys] Fwd: Down pipes</p></div><p class=3DMsoNormal><o:p> </o:p=
></p><p class=3DMsoNormal><span style=3D'font-size:12.0pt;color:black'>The =
rubber mounts shouldn't cause a problem, but the flexible sections of the d=
own pipes may have become too stiff to flex, in which case the relative mot=
ion of the engine to the chassis may be transmitted to the down pipe flange=
s.<o:p></o:p></span></p><div><p class=3DMsoNormal><span style=3D'font-size:=
12.0pt;color:black'><o:p> </o:p></span></p></div><p class=3DMsoNormal>=
<o:p> </o:p></p><div><div><blockquote style=3D'border:none;border-left=
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ht:0in'><div><div><p class=3DMsoNormal style=3D'mso-margin-top-alt:0in;marg=
in-right:0in;margin-bottom:12.0pt;margin-left:11.55pt'><br><br><o:p></o:p><=
/p></div></div></blockquote></div></div><p class=3DMsoNormal><o:p> </o=
:p></p></div></body></html>=
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