Date: Sun, 10 Jun 2001 03:55:38 -0500
Reply-To: Max Wellhouse <maxjoyce@IPA.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Max Wellhouse <maxjoyce@IPA.NET>
Subject: Re: Was Brake Rotor Squeal. Now tuning and timing research
Content-Type: text/plain; charset="iso-8859-1"
One of the advantages of the Haltech ECU system is it's ability for youto
program your own advance curve into the ECU. Each range of 500rpm has it's
own linear bar graph for you to set depending on load(32 bars per range
basically covering 30 inches of vacuum to 0) and also has a quick map where
you punch in initial timing, the rpm you want full advance at, any partial
load advance needs, and a retard feature for high loads(near 0 in. Hg).
Obviously you can't hear every detonation incident, but I am currently using
stock 5 dgree initial setting with 32 degrees total coming in at 3500 rpm.
Will experiment more when I get the air fuel ratioss closerto perfect. and I
am paking progress.
DM&FS
----- Original Message -----
From: "Mark Keller" <kelphoto@ISLANDNET.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, June 09, 2001 11:04 AM
Subject: Was Brake Rotor Squeal. Now tuning and timing research
> Hi Mark,
>
> It's good to hear that you have good power. I currently researching
> in-depth the timing advance systems. I hope to post an article which
> will help us verify that were getting the correct advance or more should
> we choose. Additionally, I'd like to locate another way to install a
> knock sensor, Dave Marshall has an old Rabbit style I looked into, but
> scuttlebutt was it wouldn't really be worth trying as it was uncertain
> if the system would be compatible for the Digifant. The early vanagons
> might have chance with this system though. Theirs gotta be something
> out there.
>
> I'm getting 20 Mpg usually with my automatic. I weigh about 4000 lb,
> and drive in 60 Mph most of the time as the speed limit on Vancouver
> Island is kinda low, 50 - 60 mph. This actually hurts my mileage since
> the vanagon automatic has a stall speed torque convertor at 3200 RPM,
> and the real lock up isn't until about 3600 RPM which I barely get to.
> But the good side is the 3200 RPM stall speed means I get Diesel like
> low end power!
>
> Sincerely,
>
> Mark Keller
>
> Mark Ingalls wrote:
> >
> > Mark Keller wrote:
> >
> > <It sounds like the rotor themselves are the culprits. I've heard that
> > > hard spots exist in the rotors of some vehicles. Whether it is a
> > > manufacturing defect or a abused rotor I don't know. Ask a reliable
shop
> > > that turn rotors and they will tell you that they can hear the hard
spot
> > > when turning a rotor. The cure is another rotor since you've
eliminated
> > > everything else.>
> >
> > Interesting Mark. If it gets to be more of a nuisance that will be
> > something to try. Maybe they get hard spots just from being used for
> > stopping the heavy van for 100k or more.
> >
> > Also I've was reading the post from 'malibu tony' about the timing. That
> > timing light he has sounds pretty handy. I just have an older craftsman
one
> > without the advance capabilities. On my beetle I have a pulley with the
> > degree markings on it so I can just increase the rpm and see the full
> > advance.
> >
> > On my van I just raised the rpm and watched to be sure it was advancing
> > using my timing light, couldn't see how much though. I'll have to mark
it by
> > hand someday.
> >
> > I have mine timed at 2 degrees atdc (stock is 5 atdc on the 83.5 to
85 )
> > and it runs fine, nice power and 18 mpg summer.
> >
> > About another recent thread, I also bought a Ashcroft 0-60 psi pressure
> > gauge via the web from Mcmaster-Carr supply company. Part # 4000K43. I
work
> > at a factory, so the shop was able to test it for accuracy and it came
in 1
> > lb. low from 15-35#. So as soon as I get some adaptor fittings I'll
test
> > out my fuel pressure which I have never done yet. The gauge was $11.44
US.
> >
> > peace,
> > Mark Ingalls
> > Nebraska City, Nebraska
> > 85 Vanagon GL 'Aimee Airheart'
> > 75 Beetle 'Salvation'
> >
> > ----- Original Message -----
> > From: Mark Keller <kelphoto@islandnet.com>
> > To: Mark Ingalls <ingalls_mark@HOTMAIL.COM>
> > Sent: Friday, June 08, 2001 11:33 AM
> > Subject: Squeal
> >
> > > Mark,
> > >
> > > >
> > >
> > >
> > > Sincerely,
> > >
> > > Mark Keller
> > >
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