I think there were other changes done to the Detroit Iron
between 1970 and 1971-72(?) that count for most of the
power loss. They lowered the compression ratio and some
other emission related things were added.
Thomas
PS. The 280 ZX had 145 Hp net and 170 Hp gross in Europe.
datsunmike wrote:
> Tom,
>
> It's nice to know how much American car makers fudged their HP figures in
> the 60s and early 70s. Thanks.
>
> It's also nice to know Datsun was at least in the ball park.
>
> Mike
> ----- Original Message -----
> From: Thomas the Swede <csp311@telia.com>
> To: datsunmike <datsunmike@nyc.rr.com>; <datsun-roadsters@autox.team.net>
> Sent: Saturday, October 28, 2000 4:40 AM
> Subject: Re: Gross vs. net hp <was Mazda MX5 (Miata, I think)>
>
> > In Europe the 2000 Solex was rated at 145 Hp and the 1600 at 90 Hp.
> > The 67½ 2000 I know of in Sweden is rated at 135 Hp DIN in the car
> > registration document. It's a factory Solex car sold new in Switzerland.
> > The 240 Z was rated 140 Hp in Europe vs. the US 151 Hp SAE Gross.
> > The difference between gross and net hp SAE is usually 10-12% on older
> > Japanese engines. The difference between SAE net and DIN is usually
> > 1-3% higher for DIN because of a slightly different test procedure but
> > sometimes the SAE net Hp can be higher than DIN.
> >
> > Power is measured at 25 degrees C for DIN and 80F(?) for SAE.
> >
> > Thomas
> >
> > datsunmike wrote:
> >
> > > Dana,
> > >
> > > That's exactly right and a point I was going to bring up. Those 150HP
> > > Solexes are SAE GROSS HP figures, not NET figures as used today.
> > >
> > > For us older guys remember when in 1972 all the HP figures dropped for
> all
> > > the muscle cars?? Chevy 350/300HP cars went to 350/210HP, the Z28 went
> from
> > > 350/370 to 350/270. That was because they went from gross to net HP
> ratings.
> > > The same happened to the Japanese cars. The 125HP 2L was probably closer
> to
> > > 100HP and the 1600 probably closer to 80HP or maybe 75HP.
> > >
> > > FWIW,
> > > Mike
> > >
> > > PS - The soft top action is great too! Takes me about 1.5 minutes to put
> it
> > > up and about 1 to take it down.
> > >
> > > ----- Original Message -----
> > > From: noji <noji@snowman.med.umn.edu>
> > > To: <datsun-roadsters@autox.team.net>
> > > Cc: <datsun-roadsters@autox.team.net>
> > > Sent: Friday, October 27, 2000 1:09 PM
> > > Subject: Re: Mazda MX5 (Miata, I think)
> > >
> > > > Roadster Folks,
> > > >
> > > > I thought there was a difference between the current measurement of HP
> > > > now and when our cars were made (wheels vrs engine). So wouldn't a
> > > > current 155 HP have a lot more power (given similar weights) than an
> > > > 1969 155 HP car?
> > > >
> > > > Dana
> > > >
> > > > PS If nothing else I would love to have a soft top that goes up as
> > > > easily and seals as well as a Miata's.
> > > >
> > > >
> > > >
> > > > datsunmike wrote:
> > > > >
> > > > > The new 2001 Miata has 155 HP SAE. I doubt that most Roadsters,
> > > including
> > > > > Solex models, would be able to keep up with it although off the line
> the
> > > > > Roadster might be able to take it because of torque and cubic inches
> but
> > > the
> > > > > six speed tranny does have a lower 1st gear so it may be close. With
> > > 116HP
> > > > > my car tops out at about 115, with 155HP it's probably closer to 130
> or
> > > so.
> > > > >
> > > > > In the handling department there is no comparision. the Miata is
> much
> > > > > stiffer and well balanced than any Roadster I have ever driven and
> has
> > > > > better steering. My Konied, sway barred, Miata will blow most
> Roadsters
> > > away
> > > > > in the corners, except for Calspeed.
> > > > >
> > > > > I'm not talking about race cars here but street cars.
> > > > >
> > > > > 30+ years of technology has made the Miata a great car. Mine is a 91
> and
> > > the
> > > > > 2001 Miatas are supposed to be much stiffer and better handling.
> While I
> > > > > love my Roadster, I also love my Miata.
> > > > >
> > > > > IMHO,
> > > > >
> > > > > Mike
> > > > >
> > > > > ----- Original Message -----
> > > > > From: Stephen McCartney <sgam@hotmail.com>
> > > > > To: <datsun-roadsters@autox.team.net>
> > > > > Sent: Thursday, October 26, 2000 7:19 PM
> > > > > Subject: Mazda MX5 (Miata, I think)
> > > > >
> > > > > > I just read that Mazda are bringing out a new model of MX5 (which
> most
> > > > > > people here call a Miata, right?) that will bring it's power up to
> > > about
> > > > > > 112kw, IIRC.
> > > > > >
> > > > > > So now it's on par with a Solex 2000?
> > > > > >
> > > > > > Has anyone here got experiences in taking on these things? I'd
> assume
> > > the
> > > > > > Mazda would handle better, but maybe isn't as quick? I'd never
> > > thought
> > > > > that
> > > > > > I could beat one, but on paper, it's looking possible...
> > > > > >
> > >
> _________________________________________________________________________
> > > > > >
> > > > > >
> > > >
> > > > --
> > > > Dana Nojima, Ph.D.
> > > > Department of Urology
> > > > VA Medical Center - 112F
> > > > 4150 Clement Street
> > > > San Francisco, CA 94121
> > > >
> > > > phone: (415) 221-4810 x 2031
> > > > fax: (415) 750-6639
> > > > noji-1@pacbell.net
> >
> >
> >
> >
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