Mr. Luddite wrote:
On 4/2/2018 10:52 PM, wrote:
On Mon, 2 Apr 2018 19:52:03 -0400, "Mr. Luddite"
wrote:

On 4/2/2018 7:39 PM, Alex wrote:
wrote:
On Sat, 31 Mar 2018 20:50:46 -0400, Alex wrote:

Keyser Soze wrote:
On 3/31/18 5:46 PM, Mr. Luddite wrote:
On 3/31/2018 1:52 PM, Keyser Soze wrote:
wrote:
On Sat, 31 Mar 2018 09:50:35 -0400, Keyser Soze
wrote:

On 3/31/18 9:05 AM, Mr. Luddite wrote:
Just been reading the various reviews on the 2018 Lincoln
Navigator.

Ford pulled out all the stops and has blown the competition
including
theÂ* Cadillac Escalade and Infiniti QX80Â* away with this one.

3.5L twin turbo, 450hp, over 500 lb ft of torque, 10 speed
transmission,
Â*Â* 6 adaptive performance settings, premier seating for all and an
interior fit and finish that is superior to any of it's
competition.

Quite a price tag though.Â* Starts at $76K.Â* $96K typical.

Mrs.E. loves Navigators.Â* She has had three of them in the past.
Gotta keep her away from this one.




Heheh...what does that barge weigh, three tons?, and with a 3.5
liter
engine, the same size as in my little truck and a Toyota with V6?
With
twin turbos? Not an engine that is going to last long, pushing an
aircraft carrier.
It does 0-60 in a little over 6 seconds. That doesn't seem to be
underpowered. I doubt Mrs E will keep it long enough to wear out the
engine.

I wasn’t questioning the horsepower output, but the wisdom of
powering a
three ton car with a small engine.

I don't know enough about cars to comment intelligently however I
don't think today's engines suffer from the "worn out" issues of
those of the past.Â* Geared properly (10 speed transmission) I don't
think the Navigator V6 is working much harder than the V6 in my
Canyon that has an
eight speed transmission or the V6 in your Tacoma.Â* The twin turbo
makes it more complex for sure but modern turbos have a decent
reputation for longevity. Lots of cars and trucks have them.

In the old days the main reason an engine "wore out" (except for a
catastrophic failure) was due to worn rings, cylinders and valves.
Their condition was manifested by burning oil, leaving blue clouds of
smoke and running rough with a cylinder or two missing due to lack of
compression.Â* You don't see that much anymore due to advances in
material sciences and hard coatings on the cylinder walls, rings and
valves.Â* Lots of cars and trucks are used daily now-a-days with 150K
to 200K miles on them and they don't burn any oil.




You probably are right. Pretty soon we'll be seeing one liter engines
zipping "funny cars" down the dragstrip!
Indy cars have 2.2L engines pushing 600+ HP.

===

Are they turbo charged or supercharged?

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"The current, fourth-generation *IndyCar* formula was presented in 2012.
The *engines* are now 2.2-liter twin turbo V-6's putting out estimated
550–750 hp depending on the level of boost used. They are limited to
12,000 rpm. *Engines* are currently supplied by Chevrolet and Honda."


I knew someone in Florida who had a Porsche 911 turbo that he installed
a variable boost control on it. Crazy fast but I'll bet it wouldn't
last long if he kept the boost setting too high, too often.


Some of the boys down in Everglades are running nitrous systems on
their air boats. If they "hit the button" a lot it does scrub expected
hours off the engine but it will pop them off a hump they get stuck
on. With the price of nitrous, it is a pretty expensive hobby. That
stuff was 3 or 4 bucks a pound 20 years ago. (with an account.)



My wife's uncle (used to teach diesel mechanics in a Jr. College) has a
early 70's Monte Carlo that he has been "building up" over several
years. 350 ci small block puts out 560 HP as tested on the dynamometer
running gas. But, he also installed a nitrous oxide tank in the trunk
with lines, remotely actuated valves and a switch in the car.

He took me for a ride in the thing which was impressive just running on
gas and then hit the nitro switch. Holy Crap!


Oh, that’s nothing. I had a ‘49 Jeep station wagon when I was 17 that once
got up to 41 mph going down Fountain Street from under the Parkway bridge
at the Woodbridge line to the light at the bottom of that long steep hill.
Fortunately the light was green because the brakes on that big double
shoebox sucked, too. it had a four cylinder engine of about 60 hp. Or
less. Lots of air drag.

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