Perry, After all that my head hurts. LOL I agree the flex pipes were to aid in
fitment of the forward portion of the exhaust system when new and it takes a
set after a period of use and no longer flexible.
-----Original Message-----
From: Perry via Healeys <healeys@autox.team.net>
To: healeys <healeys@autox.team.net>
Sent: Fri, Oct 18, 2019 9:21 am
Subject: Re: [Healeys] Fwd: Down pipes
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 Healeyâ??s? I mention production because Iâ??m not sure what was on
the first prototype cars. Todays stainless or mesh type flex pipe does actually
move even after the pipe has â??agedâ?? 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.
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 manifold would
be hard without the flex pipe sections. Note that the factory welded the two
tail pipes together on the later 100-Six/early 3000.
OK Iâ??m going back to sleep. Perhaps Iâ??ll dream about why the oil drips
out of my gearbox/OD even with fresh â??Oâ?? ringsâ?¦.
Perry
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Sent from Mail for Windows 10
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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
Â
The rubber mounts shouldn't cause a problem, but the flexible sections of the
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 flanges.
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