Genny flexible exhaust - Printable Version

Genny flexible exhaust - Printable Version

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Genny flexible exhaust - xz3kg7 - 07-12-2010 04:32

My 87FC35 has an 8k diesel genset (never figured out whose 3 cyl engine it is...
doesn't say on it). My genset is fixed and not on a sliding tray.

Anyway, I've replaced the flexible piece of the exhaust 3 times in 5 years, and
it just broke again. The piece is about 12 inches long and is of course designed
to absorb some of the vibration off the genset. But I'm tired of replacing that
thing.

Does anyone have a thought on what it would do to just replace the flex pipe
with a solid pipe? I'm thinking the exhaust hangers would then just have to
absorb any of the vibration.

Thanks,
Alan Johnson
87FC35

Genny flexible exhaust - Rick Gunther - 07-12-2010 04:42

You could search for "flexible turbo pipes" and find something that will last longer. THey are not too expensive and much stronger than standard flex exhaust. There is a reason flex pipe was used. A piece of non flex pipe would crack in the same place or somewhere more expensive.... like an exhaust manifold. Hope this helps, RIck in Ohio

--- On Mon, 7/12/10, xz3kg7 wrote:

From: xz3kg7
Subject: [WanderlodgeForum] Genny flexible exhaust
To: WanderlodgeForum@yahoogroups.com
Date: Monday, July 12, 2010, 12:32 PM

My 87FC35 has an 8k diesel genset (never figured out whose 3 cyl engine it is... doesn't say on it). My genset is fixed and not on a sliding tray.

Anyway, I've replaced the flexible piece of the exhaust 3 times in 5 years, and it just broke again. The piece is about 12 inches long and is of course designed to absorb some of the vibration off the genset. But I'm tired of replacing that thing.

Does anyone have a thought on what it would do to just replace the flex pipe with a solid pipe? I'm thinking the exhaust hangers would then just have to absorb any of the vibration.

Thanks,
Alan Johnson
87FC35

Genny flexible exhaust - g_man1146 - 07-12-2010 05:21

Alan,

I had a flex connector fail on the generator exhaust of my PT90 shortly after I
purchased it in 1991. This was an "accordion" type about 10-12" long. I replaced
it with two flex connectors, one where the original was and another on the pipe
where it turned 90 degrees. The replacements had a stainless woven appearance.
Doubling up seemed to do the trick. They were still fine when I sold the coach
in 2001. Don Bradner has that coach now and can tell you if they are still
holding.

Rich D. '06 M450 LXi CT

--- In WanderlodgeForum@yahoogroups.com, "xz3kg7" wrote:
>
> My 87FC35 has an 8k diesel genset (never figured out whose 3 cyl engine it
is... doesn't say on it). My genset is fixed and not on a sliding tray.
>
> Anyway, I've replaced the flexible piece of the exhaust 3 times in 5 years,
and it just broke again. The piece is about 12 inches long and is of course
designed to absorb some of the vibration off the genset. But I'm tired of
replacing that thing.
>
> Does anyone have a thought on what it would do to just replace the flex pipe
with a solid pipe? I'm thinking the exhaust hangers would then just have to
absorb any of the vibration.
>
> Thanks,
> Alan Johnson
> 87FC35
>

Genny flexible exhaust - xz3kg7 - 07-12-2010 15:04

Rich,

On that second flex pipe, I assume it right AFTER the 90 degree elbow, right?
(As opposed to the flex making the elbow.)

Thanks for the advice guys!
Alan Johnson

--- In WanderlodgeForum@yahoogroups.com, "g_man1146" wrote:
>
> Alan,
>
> I had a flex connector fail on the generator exhaust of my PT90 shortly after
I purchased it in 1991. This was an "accordion" type about 10-12" long. I
replaced it with two flex connectors, one where the original was and another on
the pipe where it turned 90 degrees. The replacements had a stainless woven
appearance. Doubling up seemed to do the trick. They were still fine when I sold
the coach in 2001. Don Bradner has that coach now and can tell you if they are
still holding.
>
> Rich D. '06 M450 LXi CT
>
> --- In WanderlodgeForum@yahoogroups.com, "xz3kg7" wrote:
> >
> > My 87FC35 has an 8k diesel genset (never figured out whose 3 cyl engine it
is... doesn't say on it). My genset is fixed and not on a sliding tray.
> >
> > Anyway, I've replaced the flexible piece of the exhaust 3 times in 5 years,
and it just broke again. The piece is about 12 inches long and is of course
designed to absorb some of the vibration off the genset. But I'm tired of
replacing that thing.
> >
> > Does anyone have a thought on what it would do to just replace the flex pipe
with a solid pipe? I'm thinking the exhaust hangers would then just have to
absorb any of the vibration.
> >
> > Thanks,
> > Alan Johnson
> > 87FC35
> >
>

Genny flexible exhaust - g_man1146 - 07-13-2010 01:11

Alan, Yes. The second flex was installed on the vertical section just below the
90 degree elbow. Since the 15K genny in that Bird (Serial # 2) had a water
cooled exhaust manifold that connected the exhaust via studs protruding from the
manifold, there was now enough flex to install or remove the pipe without
disturbing the manifold.

As I recall, thge two flex sections were different diameters but both available
at a local muffler shop.

Rich D. '06 M450 LXi CT

--- In WanderlodgeForum@yahoogroups.com, "xz3kg7" wrote:
>
> Rich,
>
> On that second flex pipe, I assume it right AFTER the 90 degree elbow, right?
(As opposed to the flex making the elbow.)
>
> Thanks for the advice guys!
> Alan Johnson
>
> --- In WanderlodgeForum@yahoogroups.com, "g_man1146" wrote:
> >
> > Alan,
> >
> > I had a flex connector fail on the generator exhaust of my PT90 shortly
after I purchased it in 1991. This was an "accordion" type about 10-12" long. I
replaced it with two flex connectors, one where the original was and another on
the pipe where it turned 90 degrees. The replacements had a stainless woven
appearance. Doubling up seemed to do the trick. They were still fine when I sold
the coach in 2001. Don Bradner has that coach now and can tell you if they are
still holding.
> >
> > Rich D. '06 M450 LXi CT
> >
> > --- In WanderlodgeForum@yahoogroups.com, "xz3kg7" wrote:
> > >
> > > My 87FC35 has an 8k diesel genset (never figured out whose 3 cyl engine it
is... doesn't say on it). My genset is fixed and not on a sliding tray.
> > >
> > > Anyway, I've replaced the flexible piece of the exhaust 3 times in 5
years, and it just broke again. The piece is about 12 inches long and is of
course designed to absorb some of the vibration off the genset. But I'm tired of
replacing that thing.
> > >
> > > Does anyone have a thought on what it would do to just replace the flex
pipe with a solid pipe? I'm thinking the exhaust hangers would then just have
to absorb any of the vibration.
> > >
> > > Thanks,
> > > Alan Johnson
> > > 87FC35
> > >
> >
>