6" SS EXHAUST STACK

[David Brady]

That's correct.



David Brady

'02 LXi, NC



Kurt Horvath wrote:

David,



I think your muffler is 6" inlet & out your pipes from the turbo to


the muffler are 5"



Kurt Horvath

95 PT 42

10AC



--- In "WanderlodgeForum%40yahoogroups.com",
David Brady "dmb993@..."

wrote:

>

> The LXi, like your WB, uses a 6 inch muffler. Five inch will

> certainly suck some ponies away.

>

> David Brady

> '02 LXi, NC

>

> Kurt Horvath wrote:

> >

> >

> >

> > Yea I've heard that but the one with the liner has fixed the
high

> > pressure leaks according to the Mfg. Let's hope. Prevost has
from

> > what I recall pipes bent in one piece, they are held together
with

> > those nifty band clamps that seat and conform to the pipe

exterior,

> > If the V-Bands and Flanges don't work out I'll go to those
pipe

> > clamps. The Flanges are also available with three different
types

of

> > gaskets, o-ring, flat, and, and, and I can't remember, oh yea
the

> > type I bought, male-female flanges, perfect alignment, leak
free,

> > again according to Vibrant Mfg. There is also a Stainless
Steel

> > Muffler available that may work well on your coach, but it's
inlet

> > outlet is 5" not the 6" like on your coach. well I assume
yours is

> > 6"??? Also it is 10" in diameter which would help with crowed


exhaust

> > tunnel.

> >

> > Kurt Horvath

> > 95 Pt 42

> > 10AC

> >

> > --- In "WanderlodgeForum%40yahoogroups.com"


> > <"Wanderlodge"Forum%40yahoogroups.com>,
David Brady

> > wrote:

> > >

> > > Hi Kurt,

> > >

> > > No thanks, I already have a stock muffler. Thanks for
the links,

> > > there's some pretty nifty items there. Be careful with
those

fancy

> > > braided stainless steel pieces. They look sharp, but
they've

always

> > > leaked on my turbocharged subaru wrx. Kurt, you've been
around

> > > a few over-the-road coaches, Prevost' and what not, what
do they

> > > run on their exhaust systems; i.e., expansion pipes,
flex pipe,

etc.

> > >

> > > David Brady

> > > '02 LXi, NC

> > >

> > > Kurt Horvath wrote:

> > > >

> > > > David, Would you like to take that brand new
muffler off my

> > hands???

> > > >

> > > > According to DD straight pipe & ECU will not
have any issues

in

> > the

> > > > 95 vintage S 60.

> > > >

> > > > OEM built that pipe for BB ACAP - As Cheep As
Possible -

> > > >

> > > > The original routing of the pipe leaves the turbo,
source of

the

> > > > first failure, cracked the 1st 90 degree turn a
short

straight run

> > > > 2nd. 90 degree turn, then into a double ball
connector that

also

> > > > telescopes in and out. You can check out that piece
of S---,

sorry

> > > > engineering wonder here.

> > > >

> > > > http://www.dynaflexproducts.com/downloads/DP_Catalog_03_pg70-


> > <http://www.dynaflexproducts.com/downloads/DP_Catalog_03_pg70->

> > 89.pdf

> > > > <http://www.dynaflexproducts.com/downloads/DP_Catalog_03_pg70-



> > <http://www.dynaflexproducts.com/downloads/DP_Catalog_03_pg70->

> > 89.pdf>

> > > >

> > > > Page 76 Double Ball Joint with Slip Joint Feature
Allowing

Lateral

> > > > Movement length 16 to 18 inches mine measures 14
.55 inches at

> > > > present. This marvel allows for 10 degrees of
angularity 360

> > degree

> > > > rotation 2" of offset 2" axial movement,. Hell the
u joints

can't

> > > > move around that much. Besides it was hard clamped
to the

mount

> > from

> > > > the engine in front of this connection not to
mention rusted

to

> > the

> > > > point that it took an pneumatic impact chisel to
get it

apart.. So

> > > > what's the point. You need flex in between the
turbo and the

first

> > > > mount.

> > > >

> > > > The Flex Connector with liner I choose is here at

> > > >

> > > > http://vibrantperformance.com/catalog/product_info.php?


> > <http://vibrantperformance.com/catalog/product_info.php?>

> > > > <http://vibrantperformance.com/catalog/product_info.php?


> > <http://vibrantperformance.com/catalog/product_info.php?>>

> > > >

> >

cPath=1022_1035_1064_1114&products_id=1008&osCsid=999d7ef5fdd15864bae3

> > > > 3db41abf5ef9

> > > >

> > > > The 2 90 degree turns were fabricated in that
manner because

it's

> > not

> > > > easy to bend large diameter pipe in a single 180
degree bend,

thus

> > > > they weld 2 90's together, which is the industry
standard for

> > > > manufacturing a 180 degree turn in large pipe
exhausts. Well

this

> > > > ain't the factory and we're not constrained by what
is easy. I

> > have

> > > > acquired a 14ga 180 degree U-Tube that has the same
external

> > > > dimensions as the original pipe. I'm not an
engineer but I

> > reasonably

> > > > certain that with the remaining 90 degree bend and
a 45 degree

> > bend

> > > > there will be sufficient back pressure.

> > > >

> > > > There will also be a flexible pipe hanger mount
behind the

Flex

> > > > connector mounted on the ceiling of the engine
compartment

that

> > will

> > > > support the middle section of pipe and will allow
for any

movement

> > > > and or torque that may be transferred to the pipe
by the

motor.

> > The

> > > > original clamps for the muffler have to go as they
are 6" but

the

> > > > rubber isolated mounting bars will remain and
that's all that

was

> > > > there to begin with. So where's the rub? Bub!

> > > >

> > > > Not to take anything away from the engineers that
designed the

> > Bird,

> > > > But there are some glaring deficiencies. 7 way
trailer plug,

Air

> > > > Purge System, Watts valve, Accelerator and Brake
peddles,

Front

> > Left

> > > > Shock Mount, Relay for Jake Brake, W/D Vent for
Slendide 2000,

> > > > Installation of Refrigerator with inadequate
convection, The

seat

> > > > belts mounted to floor instead of the seat, That
reminds me I

> > still

> > > > have to fix that one. Nothing like hitting a road
transition

just

> > to

> > > > have the air ride seat bounce and the seat belts
automatically

> > adjust

> > > > for the slack then the air ride seat rebounds and
the belts

try to

> > > > cut you in half at the waist. That's just the 95 PT
42. I'm

not

> > > > bitchin! I'm fixin

> > > >

> > > > Kurt Horvath

> > > > 95 PT 42

> > > > 10AC

> > > >

> > > > --- In "WanderlodgeForum%40yahoogroups.com"


> > <"Wanderlodge"Forum%40yahoogroups.com>

> > > > <"Wanderlodge"Forum%40yahoogroups.com>,
David Brady



> > > > wrote:

> > > > >

> > > > > Kurt,

> > > > >

> > > > > I agree with Greg. I'm gonna keep mine stock.
There's a

bunch

> > > > > of vibration and movement back there. I figure
BB's been

> > building

> > > > > buses a whole lot longer than I have.
Initially I'd scratch

my

> > > > > head when looking at the frame and support
pieces, but when

> > > > > you consider that something as big as a bus
must twist and

flex,

> > > > > this flexibility needs to be designed in. Make
one piece

> > stronger

> > > > > and you've created a stress raiser someplace
else.

> > > > >

> > > > > I have a friend who transplanted a honda
v-tech motor into a

> > > > > lotus elise. Everything worked but the
alternator mount. The

> > mount

> > > > > insists on cracking. There can be some weird
harmonics and

> > > > > resonant frequencies going on that are
difficult to grasp

and

> > > > > only trial and error and a 50 year track
record of building

> > buses

> > > > > can solve (unless you can model it and run
high powered

> > > > > computer finite element analysis on it). He's
still fighting

> > that

> > > > > mount...

> > > > >

> > > > > Okay, I'm off my soap box.

> > > > >

> > > > > David Brady

> > > > > '02 LXi, NC

> > > > >

> > > > > Gregory OConnor wrote:

> > > > > >

> > > > > > Kurt, try and figure why there were 4
bends. it may be

that

> > it was

> > > > > > engineered to alow for swing room between
the 'hung

exhaust'

> > and

> > > > > > the 'torque reaction of the ruber mounted
detroit'. look

at

> > the

> > > > roll

> > > > > > of the torque and see that there is a
place for the

movement

> > to

> > > > twist

> > > > > > a union. I kinda think this movement was
the problem with

the

> > > > > > resulting crack. crack=result
;movement=cause ;facilitate

> > movement

> > > > > > =repair. may be that BB enginered it
correct but someone

> > > > > > overtightened a band to cure an exhaust
leak??????? you

also

> > got

> > > > to

> > > > > > keep the stack from cantilivering off of
the maniford with

> > your

> > > > new

> > > > > > design. Scavenging is one variable in
fuel efficiency.

even

> > > > straight

> > > > > > pipes some time will result in lower fuel
economy because

the

> > > > intake

> > > > > > variable get screwd. backpressure is
mathed into the

computer.

> > > > > >

> > > > > >

> > > > > > ----------------------------------------------------------

> > > > ------

> > > > > >

> > > > > > Internal Virus Database is out-of-date.

> > > > > > Checked by AVG.

> > > > > > Version: 7.5.405 / Virus Database:
270.8.0/1715 - Release

> > Date:

> > > > 10/9/2008 12:00 AM

> > > > > >

> > > > >

> > > >

> > > >

> > > > ----------------------------------------------------------

> > ------

> > > >

> > > > Internal Virus Database is out-of-date.

> > > > Checked by AVG.

> > > > Version: 7.5.405 / Virus Database: 270.8.0/1715 -
Release

Date:

> > 10/9/2008 12:00 AM

> > > >

> > >

> >

> >

> > ----------------------------------------------------------

------

> >

> > Internal Virus Database is out-of-date.

> > Checked by AVG.

> > Version: 7.5.405 / Virus Database: 270.8.0/1715 - Release
Date:

10/9/2008 12:00 AM

> >

>

Internal Virus Database is out-of-date.

Checked by AVG. Version: 7.5.405 / Virus Database: 270.8.0/1715 - Release Date: 10/9/2008 12:00 AM