Date: Tue, 11 Feb 2014 20:17:45 -0500
Reply-To: James <jk_eaton@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: James <jk_eaton@HOTMAIL.COM>
Subject: Re: Exhaust Bushing Inner Weave Premature Failure
In-Reply-To: <CAHbJSdVsXJ7dkuOF2KXYtObD4yXxmk=duP8G2q4F+b9JXWy=Sg@mail.gmail.com>
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Isn't the temperature of the exhaust coming out of the turbocharger lower than the temperature of the exhaust coming in? After all, that's where the turbine gets the energy to compress the air over on the intake side.
James
Ottawa, ON
> Date: Sun, 9 Feb 2014 15:44:55 -0500
> From: syncrolist@BOSTIG.COM
> Subject: Re: Exhaust Bushing Inner Weave Premature Failure
> To: vanagon@GERRY.VANAGON.COM
>
> It reduces noise somewhat for sure, but wear goes up since temps are
> much higher. Also with higher EGTs mufflers behave slightly
> differently since the hotter gases also behave/flow differently. For
> most absorption style mufflers it's not a big deal, but for resonators
> it can shift the range where they cancel.
>
> On Sun, Feb 9, 2014 at 3:39 PM, Neil N <musomuso@gmail.com> wrote:
> > Good points. And that's interesting re bolted flanges. I always
> > assumed they were there *only* to help with servicing the exhaust.
> >
> > So with the TD, the obvious purpose aside (turbo boost), if I were to
> > assume that the turbo dampens exhaust pulses, does this dampening
> > reduce wear and tear on the exhaust system or just reduce exhaust
> > noise?
> >
> > Neil.
> >
> > On 2/9/14, SDF ( Scott Daniel Foss ) <scottdaniel@turbovans.com> wrote:
> >
> >
> >> About the I4 diesel set up ...
> >> for turbo diesel conversions mounted ala stock Diesel Vanagon ( which I
> >> strongly recommend ..doing it the way VW did ..engine tilted to the left
> >> at 50 degrees )
> >> all I have ever done is reproduce the stock DV system *exactly* ..
> >> just in bigger pipes and with a glass pack, and I can't think of a case
> >> where that did not last just 'forever' ..
> >> and ..
> >> one would think an inline 4 gas would have less vibration than an inline
> >> 4 diesel.
> >>
> >> I've never even put a flex section in any exhaust system , just never
> >> needed to.
> >
> >> in my world, all pipe to muffler and pipe-to-cat junctions are bolted
> >> flanges, per stock arrangement and never welded ...the junctions likely
> >> allow expansion and slight movement, further reducing tendencies to crack.
> >>
> >> Readers may recall one of my engine conversion mottos ..
> >> "Do what the manufacturers do."
> >>
> >> When they've been doing something the same way for decades ..you know it
> >> works.
> >> Why reinvent the wheel, aye ?
> >
> >
> >
> >
> > --
> > Neil n
> >
> > Blog: tubaneil.blogspot.ca
> >
> > '88 Westy http://tinyurl.com/c8rlw6p
> >
> > '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/
> >
> > Vanagon VAG *Gas* inline-VR Engine Swap Group:
> >
> > http://tinyurl.com/d7gd5ej
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