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- Newsgroups: rec.autos.tech
- Subject: AutoNotes #3
- Message-ID: <5550.88.uupcb@chaos.lrk.ar.us>
- From: dave.williams@chaos.lrk.ar.us (Dave Williams)
- Date: 26 Jul 92 14:42:00 GMT
- Reply-To: dave.williams@chaos.lrk.ar.us (Dave Williams)
- Distribution: world
- Organization: The Courts of Chaos * Jacksonville AR USA * 501-985-0059
- Lines: 100
-
-
- =====================================================================
- AutoNotes #3, 07/26/92 copr. 1992, Dave Williams
- ---------------------------------------------------------------------
- BIX: 'dave2' RIME at ->CHAOS dave.williams@chaos.lrk.ar.us
- CIS: 72571,3542 The Courts of Chaos BBS, (501)985-0059
- =====================================================================
-
- Porsche's new 968 uses a 3 liter (180 cubic inch) four with variable
- cam timing. The Porsche system twiddles slack in the timing chain to
- change cam phasing. Claimed power output is 240bhp. I'm getting
- suspicious of some of these new bhp claims - are we heading toward a
- new "advertised horsepower" age, like the 1960s? 1.33 hp/cube from a
- normally aspirated, '92-smog-legal 180-inch four crowds the edges of my
- bogosity sensor. The six-speed manual trans may be a tip that the
- powerband is crowded up to the top of the curve, though Porsche claims
- the engine has "massive torque", whatever that is... The 968's 0-60 of
- 6.9 seconds isn't very impressive for 240bhp, though they claim a top
- speed of 156mph. EPA fuel consumption is 22.8 mpg, also nothing to brag
- about, particularly with variable valve timing and modern engine
- management systems.
-
- Toyota is playing with ultrasonic vibrating mirrors. They're supposed
- to clear themselves of raindrops in 15 seconds. They're also
- electrically heated for wintertime.
-
- Coates International of NJ has dreams of getting automakers to replace
- their poppet valves with Coates' improved rotary valve design. <sigh>
- The exploded view of their prototype head for a Mercedes six shows
- two gear driven overhead rotary valve shafts, twelve actual valves,
- twelve bushings, twenty-four assorted seals, four ball bearings, a
- reasonably complex two-piece head which probably requires special
- hobbing equipment to machine for the rotary valve pockets, and assorted
- bric-a-brac. Their valve system requires the intake and exhaust air
- streams to make two right-angle bends instead of the one of a poppet
- system. Coates also claims their converted M-B engine meets emissions
- without a catalytic convertor, requires oil changes at 50,000 miles,
- requires less oil because none is needed at the top end of the engine
- (what about those bushings and bearings?), 10% less valve friction than
- poppets, 18% better fuel economy, idle speeds of 250 RPM, and greatly
- reduced octane requirements. And if you believe all that, I have a nice
- bridge for sale...
-
- BMW is building a new assembly plant in Spartanburg, SC. Why? Even
- UAW's goons will work cheaper than German labor, though you'd think
- millions of ex-East-Germans would work cheap. Kinda reminds me of
- VW's attempt at US assembly back in the '70s.
-
- General Motors Acceptance Corp (GM's financing arm) got shafted for
- a $436 million fraud involving a NY Buick dealer who financed a bunch
- of vans that didn't exist. GM disciplined, transferred, retired, or
- demoted much of GMAC's management, but claims no GMAC employees were
- conspirators in the "alleged" fraud. Ri-ight. Hey, can I finance
- that bridge?....
-
- 25% of all Chevrolet Caprices are sold as police cars.
-
- It's positively Orbital: Jaguar is one of the latest to jump on the
- Orbital two-stroke bandwagon. They're talking about replacing the
- V12 with a blower-scavenged 2-stroke V6. But wait! The Orbital
- doesn't use blower scavenging, right? Right! This confused me for
- some time, until I realized a majority of the companies claiming
- Orbital licensing are only interested in Orbital's oddball pneumatic
- fuel injection system, not their overall design.
-
- V10 Again: Ford is now talking about expanding their modular V8
- (that's the 4.6 SOHC) to a 7-liter V10 for use in E and F series
- trucks and vans. My, that's quite a displacement jump for just two
- cylinders. Why are they doing this? Ford claims it's to ward off
- competition from - (fanfare) Toyota's new T100 line of pickups.
-
- The V10 is an idiotic layout for an engine. It can't be balanced
- without Lanchester-type shafts. If you're going to go more than
- eight cylinders, the only reasonable step is twelve, which is in
- perfect balance no matter what the cylinder bank angle. Alas, it
- seems to be a fad, much like the five cylinder craze that went around
- when Audi stretched their four. In Audi's case, it made sense - they
- couldn't justify an all-new engine, and they'd already bored and
- stroked the old one as far as it would go. They bit the bullet and
- tacked on an extra cylinder. BTW, Audi has finally phased out the
- 5 except for one model, and will soon have everything converted to
- their new V6.
-
- Opel's new V6 has a 55 degree cylinder bank angle instead of the
- "proper" 60 degrees. I doubt anyone would notice, considering the
- number of 90 degree V6s in the market. The Opel will be a DOHC, four
- valve, all-aluminum unit of 2.5 liters.
-
- Ford's Sierra (known in the US as the Merkur XR4Ti) bites the dust
- next year. It will be replaced by a new FWD platform that looks
- something like an obese Probe. The platform will be shared with the
- Tempo/Topaz in the US. The now-defunct British magazine Auto
- Performance called the Sierra "vaguely amphibious," which is about
- as kind as could be expected.
-
- =====================================================================
- AutoNotes will be published irregularly as the mood hits. Contains
- no cyclamates, backwards-masked messages, FNORDs, or recycled fibers.
- =====================================================================
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