Date: Mon, 10 May 2010 20:36:21 -0700
Reply-To: Angus Gordon <birdworks@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Angus Gordon <birdworks@GMAIL.COM>
Subject: Re: Good local mechanic worked on my 85
In-Reply-To: <4BE8C95A.30245.538A69E@taring.taring.org>
Content-Type: text/plain; charset=ISO-8859-1
The exhaust system has to be air-tight for the O2 sensor to work properly.
Exhaust gas pulses can draw air in through cracks, which fools the O2
sensor.
Angus
Angus Gordon
Bainbridge Island WA
birdworks@gmail.com
On Mon, May 10, 2010 at 8:04 PM, tom ring <taring@taring.org> wrote:
> And a question. I have had a very minor to major break in the exhaust for
> a
> few thousand miles. The very minor was a lengthwise split about 2 inches
> from
> the head and extending for about an inch and a half. That was around in
> somewhat patched to not patched for a couple cycles for about 5 thousand
> miles.
> The major was the driver side forward cylinder. Broke at the flange. Bad
> mojo. 20 miles home.
>
> Patched with the nasty white exhaust paste wrapped with the high temp buck
> a
> foot exhaust wrap and then with steel fence wire with about 1/16 to 1/8
> spacing.
>
> Lasted for 150 miles, almost all I needed last summer.
>
> So the question - is proper/even back pressure a critical thing on these
> engines? Because this thing is more balanced cylinderwise and just in
> general
> than I remember.
>
> tom
> K0TAR
>
> On 10 May 2010 at 21:27, tom ring wrote:
>
> > Just had a local private mechanic install a new exhaust on an engine that
> had
> > at least 1 broken stud. He removed and welded a couple other support
> bits
> > during the job. Replaced the oxy sensor with new. Installed all new
> fuel
> > lines and covered them with the old outside protective plastic shrouds.
> >
> > I supplied the new exhaust kit and fuel line kit but nothing else. He
> picked
> > up the oxy sensor and replacement studs as well as a few other gaskets
> and
> > bolts.
> >
> > Total bill - $330 including additional parts and shop. I like Westside
> VW, but
> > this was a lot cheaper for 10 hours of work.
> >
> > He is in the Minneapolis metro if anyone is interested. Contact me at
> the
> > shown email address.
> >
> > tom
> > K0TAR
> >
> >
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> >
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> >
>
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