6" SS EXHAUST STACK

[Kurt Horvath]

> But Kurt, it's only 5 inches, correct? The turbo dumps into
> 5 inches but the gases are hot, low density, low pressure and
> moving fast. As the exhaust progresses down the exhaust
> system the air cools, becomes more dense, and back pressure
Ø increases.
Ø
Ø CORRECT, THAT IS WHY YOU USE EXHAUST BLANKETS ON THE, MANIFOLD,
TURBO, PIPES, AND STACK TO KEEP THE HEAT INSIDE THE PIPES FROM
COOLING THUS MAINTAINIG THE VELOCITY OF THE ESCAPING EXHAUST
Ø
Ø If way down the exhaust you go from 6 to 5 your
Ø increasing the backpressure.
Ø
Ø THE EXHAUST DOES NOT REDUCE DOWN TO 5" FROM 6" IT IS 5" FROM TURBO
TO THE END OF THE STACK DICHARGE. A 6" STACK CAN BE BUILT AS I
DECRIBED BEFOR BUT COSTS ARE DOUBLED. 5' SS TUBE $20 A FOOT, 6" SS
TUBE $50 A FOOT
Ø
Ø This will make the exhaust run
> hotter at the turbo, high turbo pyrometer, less turbo velocity,
> and a reduction in performance. 5 inches is 20 square inches,
> while 6 provides 30, a whopping 50% improvement. I'm gonna
> stick with the 6 or figure out a way to stuff 2 five inch stacks
Ø in the corner of the bus.
Ø
Ø I'M SURE THIS GUY COULD BUILD 2-5" STACKS AND HOOK THEM TOGETHER
WITH A COLLECTOR AT THE START LIKE HEADERS
Ø
Ø If you take it down to 5 inches, let
> us know if your turbo pyrometer shows excessive temps on
> those long 6% grades. I think the key is eliminating/reducing
> back pressure.
>
> Do you have a web page for the 5" stack that you'd like to
Ø use?

NO THEY DO NOT LIST THE STACK IT IS CUSTOM BUILT
>
Ø Check this out: http://dieselinjection.net/BRUCE/articles.html


IT WILL TAKE SOME TIME TO ASSIMULATE ALL THAT
>
>
> David
> '02 LXi, NC

>
> David
> '02 LXi, NC



--- In WanderlodgeForum@yahoogroups.com, David Brady
wrote:
>
> But Kurt, it's only 5 inches, correct? The turbo dumps into
> 5 inches but the gases are hot, low density, low pressure and
> moving fast. As the exhaust progresses down the exhaust
> system the air cools, becomes more dense, and back pressure
> increases. If way down the exhaust you go from 6 to 5 your
> increasing the backpressure. This will make the exhaust run
> hotter at the turbo, high turbo pyrometer, less turbo velocity,
> and a reduction in performance. 5 inches is 20 square inches,
> while 6 provides 30, a whopping 50% improvement. I'm gonna
> stick with the 6 or figure out a way to stuff 2 five inch stacks
> in the corner of the bus. If you take it down to 5 inches, let
> us know if your turbo pyrometer shows excessive temps on
> those long 6% grades. I think the key is eliminating/reducing
> back pressure.
>
> Do you have a web page for the 5" stack that you'd like to
> use?
>
> Check this out: http://dieselinjection.net/BRUCE/articles.html
>
>
> David
> '02 LXi, NC
>
> Kurt Horvath wrote:
> >
> > Gregg,
> >
> > Yea, ALL SHOW AND NO GO!-
> >
> > David,
> >
> > I know what you're after but the pipes I described are basically
> > straight pipes with a very well designed sound surprising ceramic
> > coating that does not restrict flow. But won't be as harsh as a
> > straight pipe. Cost is nominal at $250.00 Vs $200 for a straight
pipe
> >
> > Kurt Horvath
> > 95 PT 42
> > 10AC
> >
> > @yahoogroups.com, "Gregory OConnor" wrote:
> > >
> > > Kurt, I dont think big thick straight pipes were mounted on
those
> > > rigs for performance or efficiency. its all looks and
compensation.
> > > Bet every trucker with 8 inch stacks also drive a 4x4 requiring
a
> > > step latter to get into.
> > > Greg 94pt,toyota pickup
> > >
> > > --- In WanderlodgeForum@yahoogroups.com
> > , "Rob Robinson"
> > > wrote:
> > > >
> > > > Kurt two years ago up here in BC I saw a millenium Bluebird
> > parked
> > > across
> > > > from me at my home RV park that had two stacks. The owners
were
> > only
> > > > visiting and must have been out sight seeing most of the time
> > > because I
> > > > never did see them. I sure would have like to see behind their
> > > engine bay.
> > > >
> > > > 2008/11/1 Kurt Horvath
> > > >
> > > > >
> > > > > I guess you could or go to a large 8" single , bit the
chrome
> > > shops
> > > > > sell them for outrageous prices---$692.00
> > > > >
http://www.iowa80.com/DirectionsWEB/webc...splay.php?
> > <http://www.iowa80.com/DirectionsWEB/webc...splay.php?>
> > > > > itemid=74151
> > > > > Kurt Horvath
> > > > > 95 PT 42
> > > > > 10AC
> > > > >
> > > > > In WanderlodgeForum@yahoogroups.com
> > > > > 40yahoogroups.com>,
> > > > > David Brady wrote:
> > > > > >
> > > > > > Now we're talking. Can you fit two stacks back there? I'm
> > > > > > serious. This will be an improvement in performance. Two
> > stacks
> > > > > > will dramatically reduce backpressure, which will result
in
> > > > > > lower turbo pyrometer temps, and will allow more boost and
> > > > > > more power. A single 5 inch, as compared to the stock 6"
> > > > > > will do the reverse.
> > > > > >
> > > > > > David
> > > > > > '02 LXi, NC
> > > > > >
> > > > > >
> > > > > > Kurt Horvath wrote:
> > > > > > >
> > > > > > > One pipe from the turbo then splits to two stacks.
> > > > > > >
> > > > > > > Kurt Horvath
> > > > > > > 95 PT 42
> > > > > > > 10AC
> > > > > > >
> > > > > > > --- In WanderlodgeForum@yahoogroups.com
> > > > > 40yahoogroups.com>
> > > > > > > 40yahoogroups.com > > > 2540yahoogroups.com>>,
> > > > > David Brady
> > > > > > > wrote:
> > > > > > > >
> > > > > > > > But doesn't the trucking industry run dual exhausts?
> > > > > > > >
> > > > > > > > David Brady
> > > > > > > > '02 LXi, NC
> > > > > > > >
> > > > > > > > Pete Masterson wrote:
> > > > > > > > >
> > > > > > > > > Having recently replaced my muffler (at great
expense) -
> > -
> > > had
> > > > > I
> > > > > > > to do
> > > > > > > > > it over again, I'd have switched over to a 5" system
> > from
> > > > > turbo to
> > > > > > > > > stack. As others have stated, it's 5" at the turbo
> > outlet
> > > and
> > > > > the
> > > > > > > > > standard in the heavy truck industry is 5".
> > > > > > > > >
> > > > > > > > > The only performance difference I notice (between
the
> > old
> > > > > blown
> > > > > > > out
> > > > > > > > > muffler and the new one) is that the exhaust-type
Jake
> > > brake
> > > > > > > seems to
> > > > > > > > > be slightly less effective.
> > > > > > > > >
> > > > > > > > > Pete Masterson
> > > > > > > > > '95 Blue Bird Wanderlodge WBDA 42
> > > > > > > > > aeonix1@ > > 2540mac.com>>
> > > > > > > > > On the road at Hohenwald, TN (Natchez Trace Parkway)
> > > > > > > > >
> > > > > > > > > On Oct 31, 2008, at 11:24 PM, Kurt Horvath wrote:
> > > > > > > > > > <snip>
> > > > > > > > > > For the last four weeks I have queried Detroit
Diesel,
> > > > > Custom
> > > > > > > Exhaust
> > > > > > > > > > Fabricators, Several OEM Exhaust Mfg.'s, Marine
> > Exhaust
> > > > > > > Engineers &
> > > > > > > > > > Fabricators, My BB Guru, and anyone else that
would
> > > lend an
> > > > > > > ear, and
> > > > > > > > > > no one has expressed any apprehension or regard
in the
> > > > > respect
> > > > > > > to a
> > > > > > > > > > 5" exhaust system. In fact all parties expressed
their
> > > > > surprise
> > > > > > > in
> > > > > > > > > > respect as to why the system would change size at
the
> > > > > muffler.
> > > > > > > > > >
> > > > > > > > > > Several owners have modified their systems to 5"
from
> > > end to
> > > > > > > end, and
> > > > > > > > > > have seen no change in performance. Positive or
> > > negative, In
> > > > > > > general
> > > > > > > > > > it was just a matter of convenience in acquiring
> > parts,
> > > I
> > > > > won't
> > > > > > > get
> > > > > > > > > > into that. That has recently been beaten to death
at
> > the
> > > > > > > expense of
> > > > > > > > > > all parties involved
> > > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > ----------------------------------------------------
----
> > --
> > > > > > > ------
> > > > > > > > >
> > > > > > > > > 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
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Rob, Sue & Merlin Robinson
> > > > 94 WLWB
> > > >
> > >
> >
> >
> > ------------------------------------------------------------------
------
> >
> > 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
> >
>