Date: Sat, 8 Feb 2014 12:12:27 -0800
Reply-To: Don Hanson <dhanson928@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Don Hanson <dhanson928@GMAIL.COM>
Subject: Re: Exhaust Bushing Inner Weave Premature Failure
In-Reply-To: <CAB2Rwfg=PP+NZcUc3rnLZ=LUUAyG_LAhUy6JZpb4Os4cOotgEw@mail.gmail.com>
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I got to thinking about this. Seems like any vibration in our exhaust
would match up with the motor's vibes....rubber would maybe allow the
exhaust systems to perhaps get just a bit of movement going.... The exhaust
does have a rather long "arm", all depending on being attached to the block
with out breaking at just the one end at the manifold. I'm guessing when
all is right it works but if anything is slightly wrong it breaks.
On Feb 8, 2014 11:57 AM, "Neil N" <musomuso@gmail.com> wrote:
> Thanks for your suggestion Dennis. But if an exhaust is "hard mounted"
> to a 4 cylinder inline gas engine, is there a greater risk of
> transmitting more engine vibration to exhaust thus causing a part(s)
> in exhaust to crack? My observation being that the I4 has more
> vibration than the WBX.
>
> Originally I used 3 isolators as per the Diesel Vanagon, now I use
> four; two per each set of DV type driver side brackets. The muffler is
> *very* stable. Possibly as stable as per what you suggest?
>
> I've built at least 4 different versions of exhaust. FAS (Foreign Auto
> Supply) hangs their exhaust much like a normal passenger car:
> downpipe, flex joint(s), remainder hung from body.
>
> A few images of the FAS exhaust from their Beta picasaweb album starting
> here:
>
>
> https://picasaweb.google.com/116091365267664548782/BETAUPDATES?authkey=Gv1sRgCIDh0azint7C9QE&feat=directlink#5657441635097028722
>
> IMO, their entire album is worthy viewing: http://tinyurl.com/lu6fz99
>
> This shouldn't be "rocket surgery" but as Don and others have
> experience, getting the exhaust system set up to last a long time is a
> challenge.
>
>
>
>
>
> On 2/8/14, Dennis Haynes <d23haynes57@hotmail.com> wrote:
>
> > One thing I would do is get rid of the rubber mounts on the muffler. They
> > didn't work for VW. All the Waterboxer have the muffler firmly attached
> and
> > moving directly with the engine. One sold assembly.
>
>
> --
> 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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