Date: Sat, 28 Jul 2007 20:08:03 -0400
Reply-To: Jim Akiba <syncrolist@BOSTIG.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jim Akiba <syncrolist@BOSTIG.COM>
Subject: Re: Power output of actual vans? (long)
In-Reply-To: <71d9cdf90707281540n28bf4b67j7886e74861c851bd@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Jake, you're in the pacific NW? We have a few up in your area now, and a
couple more on the way.
Jim Akiba
On 7/28/07, Jake de Villiers <crescentbeachguitar@gmail.com> wrote:
>
> I know exactly how you're feeling Robert. I had the same epiphany when I
> drove a 2.5 Subie in a MultiVan at SmallCar, and again when I drove Paul
> Guzyk's 2.2 Carat Automatic here at home.
>
> Aye caramba!
>
> I'd love an opportunity to try a Zetec too. Anyone?
>
> On 7/28/07, Robert Keezer <warmerwagen@yahoo.com> wrote:
> >
> > So this is why I say seat-of-the-pants when I
> > wrote about my first Zetech Vanagon test drive.
> >
> > I don't need much in the way of dyno testing to
> > make my decision, like most people.
> >
> > If you go to buy a new car the saleman doesn't
> > say "hey , can we toss that on the dyno for you
> > today?
> >
> > No, they say "take it for a test drive".
> >
> > Robert
> >
> > 1982 Westfalia
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --- Bob Donalds <donalds1@VERIZON.NET> wrote:
> >
> > > racers exaggerating HP numbers I cant imagine
> > > that
> > > when the green flag drops the BS stops
> > >
> > > I owned and have spent allot of time on both
> > > engine and chassis dynos great
> > > for tuning BUT most dyno test are FULL throttle
> > > and who drives like that
> > > besides Brady
> > > I also did allot of chassis dyno testing with
> > > vanagons inconsistent at best
> > > I did have one 84 van with a B Bob 2.1 engine
> > > that put out 75 HP at the rear
> > > wheels every time I checked it.
> > > that became my base line
> > > numbers don't mean sh**
> > > every dyno is different some even have
> > > Hollywood HP numbers
> > >
> > > to even feel a differance in a vanagon you
> > > would need 10 more HP
> > > I like an engine that spins without self
> > > destructing whats what I do in my
> > > engines make it spin up
> > > If you change the shift point 1k and the engine
> > > can take it you have
> > > something more to work with
> > > the Z tech shifts a 6500 RPM screw the factory
> > > HP numbers
> > > whats the throttle responce like
> > > whats the shift point
> > > and will it stay together
> > >
> > > Bob Donalds
> > > Bosotn Engine
> > >
> > > ----- Original Message -----
> > > From: "Don Hanson" <dhanson@GORGE.NET>
> > > To: <vanagon@GERRY.VANAGON.COM>
> > > Sent: Saturday, July 28, 2007 8:05 AM
> > > Subject: Power output of actual vans? (long)
> > >
> > >
> > > > Has anyone actually documented the output of
> > > the various engine combos in
> > > > vans? I ask this with a LOT of experience
> > > with boasting car owners,
> > > > optimistic aftermarket parts vendors,
> > > erroneous factory HP figures, etc.
> > > > While involved in racing with the Porsche
> > > brand, HP was an often
> > > > exaggerated
> > > > and misrepresented figure, sometimes stated
> > > as 'at the crank' sometimes
> > > > "at
> > > > the wheels" and with all kinds of different
> > > 'correction factors' inserted
> > > > before the bottom line. The same motor in
> > > the same chassis would produce
> > > > varied numbers on different brand dynos,
> > > also.
> > > > So, when we hear figures for all these
> > > motor/combos, what, exactly are we
> > > > hearing? Where do the numbers come from? If
> > > someone simply quotes what
> > > > the
> > > > factory said the power figures were, for a
> > > particular type motor, brand
> > > > new, it may not have much relation to 'that
> > > motor' in the van..
> > > > For instance, Porsche, in it's sales
> > > verbiage in the '80s, understated
> > > > the HP of the 928 motor by a significant
> > > amount. Said to have been done
> > > > because 911 at that time was the company's
> > > designated high performance
> > > > model
> > > > and they didn't want to confuse their Base,
> > > 'The Faithful' (911s are the
> > > > only "real" Porsche) by offering a Porsche
> > > with more acknowledged hp
> > > > than
> > > > the 911. And the Dodge Viper's hype gave HP
> > > output figures in the 450 hp
> > > > range, but they figured it at the crank, not
> > > at the wheels..
> > > > So when someone says.."Ha, the X-type
> > > conversion motor has 150hp (or
> > > > whatever), while the WBX is only 90 or some
> > > such, it'd be interesting to
> > > > hear where those numbers are coming from.
> > > > Aftermarket 'speed-parts'...First thing done
> > > on a racecar during engine
> > > > development is to do a 'baseline' dyno run,
> > > so you can see if what you
> > > > modify actually does increase power..My 90GT
> > > Porsche 928 motor started
> > > > life
> > > > with some 285hp (on a Dynojet chassis dyno at
> > > sea level) and ended up (so
> > > > far) with 587 on the same dyno. But during
> > > development, many bulls--t
> > > > avenues were followed and proven to be no
> > > gain or even a hp loss, again
> > > > verified on the dyno. "Seat-O-Pants"
> > > impressions are often mistaken, too.
> > > > I made modifications that I would have sworn
> > > felt like 20-50 more hp, but
> > > > sometimes were just noise and wishful
> > > thinking, when verified at the dyno,
> > > > or with laptimes at a known track.
> > > > Dyno sessions aren't too expensive or
> > > difficult to complete, especially
> > > > since the 'tuner car' market has developed.
> > > There are dyno shops around
> > > > in
> > > > most larger metropolitan areas where you can
> > > get onto the roller for a
> > > > half
> > > > hour and get actual data for a nominal fee.
> > > > I'd love to see the curves for the various
> > > types of conversion motors, to
> > > > actually compare It's too easy to just
> > > 'say'.stuff about how a particular
> > > > motor works..but the figures would be less
> > > subjective, if we had some.
> > > > Don Hanson
> > >
> >
> >
> >
> >
> >
> ____________________________________________________________________________________Ready
> > for the edge of your seat?
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> >
>
>
>
> --
> Jake
> 1984 Vanagon GL
> 1986 Westy Weekender "Dixie"
> www.crescentbeachguitar.com
>
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